Unitedhealthcare Insurance Company v. Burwell ( 2018 )


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  •                           UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF COLUMBIA
    _____________________________________
    )
    UNITEDHEALTHCARE INSURANCE )
    COMPANY, et al.,                       )
    )
    Plaintiffs,              )
    )
    v.                              )   Civil Case No. 16-157 (RMC)
    )
    ALEX M. AZAR II,                       )
    Secretary of the Department of Health  )
    and Human Services, et al.,            )
    )
    Defendants.              )
    _____________________________________)
    OPINION
    Health insurance is provided to most seniors and many disabled Americans
    through Medicare, paid for by taxes and administered by the Centers for Medicare and Medicaid
    Services (CMS). As amended, the Medicare statute (formally part of the Social Security Act),
    includes a “Medicare Advantage” program whereby Medicare-eligible individuals can elect to
    receive their health insurance coverage through a private insurance company. The insurance
    company must provide at least the same coverage as traditional Medicare, although it often
    expands coverage, and is to make its profit from Medicare through efficiencies and other cost-
    saving methods. The statute requires “actuarial equivalence” between CMS payments for
    healthcare coverage under Medicare Advantage plans and CMS payments under traditional
    Medicare. In this case, a large group of insurance companies that provide Medicare Advantage
    coverage challenged a Final Rule, adopted in 2014, by which the documentation used to set the
    rates to pay the insurance companies is inconsistent with the documentation used to determine if
    the insurers have been overpaid. The insurers allege that the Final Rule will inevitably fail to
    satisfy the statutory mandate of actuarial equivalence.
    1
    There is a history to this dispute over actuarial equivalence. The government
    previously had proposed an audit program for Medicare Advantage insurers and some insurers
    challenged its methodology for determining overpayments. Since government records for
    traditional Medicare payments are used to set rates but are not audited, the insurers contended
    that imposing a 100% accuracy requirement on their records, on pain of being required to return
    any “overpayment,” would violate the statutory requirement for actuarially equivalent payments
    between traditional Medicare and Medicare Advantage. Heeding the advice of actuaries, the
    government ultimately adjusted its audit plan to recognize the different data sets. For the 2014
    Final Rule at issue here, however, CMS has refused to make such an adjustment although the
    different data sets are again in use.
    After full briefing and oral argument, this Court concludes that the 2014 Final
    Rule violates the statutory mandate of “actuarial equivalence” and constitutes a departure from
    prior policy that the government fails adequately to explain. The Court will grant summary
    judgment to the Medicare Advantage insurers and vacate the Rule.
    I. BACKGROUND
    This lawsuit is brought by Medicare Advantage (MA) organizations in the
    UnitedHealth Group family of companies, the nation’s leading provider of Medicare Advantage
    health benefits plans (collectively, UnitedHealth). 1 Known as Medicare Part C, the Medicare
    1
    Plaintiffs are UnitedHealthcare Insurance Company, AmeriChoice of New Jersey, Inc., Arizona
    Physicians IPA, Inc., Care Improvement Plus South Central Insurance Company, Care
    Improvement Plus of Texas Insurance Company, Care Improvement Plus Wisconsin Insurance
    Company, Health Plan of Nevada, Inc., Medica Healthcare Plans, Inc., Oxford Health Plans
    (CT), Inc., Oxford Health Plans (NJ), Inc., Oxford Health Plans (NY), Inc., Pacificare Life and
    Health Insurance Company, Pacificare of Arizona, Inc., Pacificare of Colorado, Inc., Pacificare
    of Nevada, Inc., Physicians Health Choice of Texas, LLC, Preferred Care Partners, Inc., Sierra
    Health and Life Insurance Company, Inc., UnitedHealthCare Benefits of Texas, Inc.,
    UnitedHealthCare Community Plan of Ohio, Inc., UnitedHealthCare Community Plan of Texas,
    2
    Advantage program allows Medicare-eligible individuals to receive healthcare benefits through
    private insurance companies that have contracted with CMS, a constituent agency of the
    Department of Health and Human Services (HHS). Alex M. Azar II, HHS Secretary, is sued in
    his official capacity. CMS administers traditional Medicare and pays its benefits. However,
    some 20 million Americans, approximately one-third of Medicare-eligible individuals, have
    opted for Medicare Advantage coverage.
    Medicare Parts A, B and C are relevant here. Medicare Part A is mandatory for
    senior Americans who take Social Security benefits; Part A provides coverage for hospital
    expenses. Medicare Part B is voluntary and provides partial coverage for doctor expenses.
    Medicare Part C offers the Medicare Advantage program through which private insurance
    companies replace CMS and provide full Medicare coverage to beneficiaries.
    Initially, Medicare paid all “reasonable costs” (“fee for service”) to a hospital
    caring for a Medicare beneficiary. See Methodist Hosp. of Sacramento v. Shalala, 
    38 F.3d 1225
    ,
    1227 (D.C. Cir. 1994). Over time, that standard has changed and Medicare now pays a hospital
    based on the “Diagnosis-Related Group” (DRG) shown by the patient’s diagnoses at the time of
    discharge. Medicare Part B also started by paying doctors a reasonable “fee for service,” but
    now pays them according to fee schedules that limit the amount they may charge and be paid for
    LLC, UnitedHealthCare Insurance Company of New York, UnitedHealthCare of Alabama, Inc.,
    UnitedHealthCare of Arizona, Inc., UnitedHealthCare of Arkansas, Inc., UHC of California,
    UnitedHealthCare of Florida, Inc., UnitedHealthCare of Georgia, Inc., UnitedHealthCare of New
    England, Inc., UnitedHealthCare of New York, Inc., UnitedHealthCare of North Carolina, Inc.,
    UnitedHealthCare of Ohio, Inc., UnitedHealthCare of Oklahoma, Inc., UnitedHealthCare of
    Oregon, Inc., UnitedHealthCare of Pennsylvania, Inc., UnitedHealthCare of the Midlands, Inc.,
    UnitedHealthCare of the Midwest, Inc., UnitedHealthCare of Utah, Inc., UnitedHealthCare of
    Washington, Inc., UnitedHealthCare of Wisconsin, Inc., and UnitedHealthCare Plan of the River
    Valley, Inc.
    3
    each defined service. See United Seniors Ass’n, Inc. v. Shalala, 
    182 F.3d 965
    , 968 (D.C. Cir.
    1999). Under Part B, doctors must submit diagnosis codes to identify the reason a patient
    received treatment, but “payments depend only on the services (or durable goods) provided
    [office visit, examination, shot, etc.] and not in any way on the diagnoses submitted.” Defs.’
    Mem. in Support of Their Cross-Mot. for Summ. J. and Opp’n to Pls.’ Mot. for Summ. J. (CMS
    Mot.) [Dkt. 57-1] at 7.2 In contrast, Medicare Advantage insurers are not paid based on medical
    services but “are paid a pre-determined monthly sum for each person they cover, based in part
    upon the characteristics of the particular beneficiary being covered.” 
    Id. (internal citation
    omitted).
    A Medicare Advantage insurer must provide, at a minimum, the same level of
    benefits provided by traditional Medicare itself, except for hospice care. See 42 U.S.C. § 1395w-
    22(a). Under a Medicare Advantage policy, the insurance companies pay doctors, other
    healthcare providers, and hospitals for their services and are reimbursed by CMS on a per-
    member-per-month rate that is determined beforehand. See 
    id. § 1395w-23(a).
    By law, CMS must pay Medicare Advantage insurers in a manner that ensures
    “actuarial equivalence” between payments for healthcare under Medicare and Medicare
    Advantage plans:
    [T]he Secretary shall adjust the payment amount [of fixed monthly
    payments to Medicare Advantage insurers] for such risk factors as
    age, disability status, gender, institutional status, and such other
    factors as the Secretary determines to be appropriate, including
    adjustment for health status . . . , so as to ensure actuarial
    equivalence.
    2
    Although all parties used the initials “FFS” (fee-for-service) to reference traditional Medicare
    (and compare it to Medicare Advantage), this term is “now, something of a misnomer” because
    CMS has changed its fee structures for hospitals and doctors. See CMS Mot. at 4. The Court
    eschews the use of the acronyms for clarity, except when quoting. See D.C. Circuit Handbook of
    Practice and Internal Procedures 41 (2016).
    4
    
    Id. § 1395w-23(a)(1)(C)(i).
    Risk factors represent the risk that a given beneficiary, or
    beneficiary population, will need healthcare from doctors or hospitals in the next year as it may
    be diagnosed. “A risk adjustment model is required to translate the diagnosis data into expected
    costs of coverage.” CMS Mot. at 14. For this purpose, CMS relies on its model, the CMS
    Hierarchical Condition Category (CMS-HHC) risk-adjustment model, to “perform that
    conversion”:
    CMS-HCC is a complex regression model built to estimate the costs
    associated with certain characteristics of Medicare beneficiaries.
    The inputs to the model are data from individuals who receive their
    benefits through the traditional, fee-for-service Medicare system.
    Its outputs are a set of multipliers—that is, “coefficients”—that
    “represent the marginal (additional) cost” of each medical
    “condition or demographic factor (e.g., age/sex group, Medicaid
    status, disability status).” The coefficients are added together to
    form a “risk score,” and then computed against a base payment rate
    (which varies depending on geography and the bid submitted by the
    insurer, among other things).
    
    Id. (internal citation
    s omitted).
    By this process, CMS calculates the average monthly expenditure for an average
    beneficiary under traditional Medicare in the past year. The “base rate establishes . . . what it
    would cost to treat a beneficiary of average risk in a given area.” See Transcript of Aug. 8, 2018
    Motions Hearing (Hearing Tr.) [Dkt. 73] at 5. CMS adds a geographical differential, based on
    data from the past year, to calculate an average per-capita monthly payment for each county in
    the nation.
    This is no straightforward task. Each traditional Medicare beneficiary has a
    “demographic risk coefficient” which reflects that person’s age, gender, institutional status, and
    disability status, among others. See 
    id. at 4.
    Additional coefficients represent the health status of
    the beneficiaries in traditional Medicare, taken from their diagnosis codes as reported to CMS by
    5
    their doctors. Using such CMS data, “the model estimates the marginal cost of each disease and
    cluster of demographic characteristics. . . . By mapping known expenditures . . . , the model
    calculates the expected cost of each medical condition and demographic factor.” CMS Mot. at
    17. Using the data from the demographic characteristics, reported diagnoses, and Medicare
    expenses of the beneficiaries in traditional Medicare, the model can estimate the marginal cost of
    each condition, disease and cluster of demographic characteristics.
    The “average beneficiary” is given a risk score of 1.0, which is then adjusted
    upwards or downwards according to the risk score determined by an individual’s demographic
    and health status information. For example, if a beneficiary has a condition that CMS has
    determined based on its Medicare data increases average costs by 20%, that person will have an
    adjusted risk score of 1.2 and the Medicare Advantage payment rate applicable to that person
    will be set at 120% of the average benchmark rate. See, e.g., Advance Notice of Methodological
    Changes for CY 2004 Part C Rates (Mar. 28, 2003) (2004 Advance Notice) at AR3895-97
    (describing how CMS uses the model to “associate diseases categories with incremental costs”). 3
    Thus, the costs in a prior year of the “risk coefficients” in the traditional Medicare system are
    used to determine the costs of similar risk coefficients for Medicare Advantage beneficiaries.
    The underlying logic is that developing risk coefficients with data from traditional Medicare, and
    then adjusting a Medicare Advantage beneficiary’s risk score (and the payment to the Medicare
    Advantage insurer accordingly), will render the cost to CMS under traditional Medicare and the
    cost to the insurer under Medicare Advantage actuarially equivalent.
    3
    CMS publishes annual Advance Notices of changes to its risk-adjustment methodology for the
    coming year. See 42 U.S.C. § 1395w-23(b).
    6
    In conducting these analyses, CMS relies entirely on the diagnosis codes
    submitted by healthcare providers under traditional Medicare. “[T]he risk adjustment model is
    built on unaudited [traditional Medicare] data . . . which must contain errors.” CMS Mot. at 37.
    Indeed, doctors treating traditional Medicare patients are paid based on their services and not the
    diagnosis codes they might submit to report why the patient saw the doctor. As UnitedHealth’s
    counsel explained at argument, physicians bill traditional Medicare by procedure, not diagnosis
    codes, so that “physicians are essentially indifferent to the diagnosis . . . . There’s no financial
    incentive to be particularly careful.” Hearing Tr. at 13. “[W]hat matters is the procedure they
    did.” 
    Id. at 14;
    see also CMS Mot. at 7 (agreeing that traditional Medicare payments to doctors
    “depend only on the services . . . and not in any way on the diagnoses submitted”). Given this
    incentive scheme, it can be no surprise that diagnosis reports for Medicare Part B are considered
    much less reliable than hospital diagnosis reports for Part A. See CMS Mot. at 7 (noting “the
    quality of the Part B diagnosis data is generally understood to be inferior to the Part A diagnosis
    data”).
    Medicare Advantage insurance companies bid annually after CMS issues notice
    of each county’s benchmark rate for the forthcoming year. See 42 U.S.C. § 1395w-23(b)(1)(B).
    The insurers are paid on a per-capita basis for each covered individual, including applicable risk
    scores. As a result, a Medicare Advantage insurer undertakes to provide insurance coverage at
    least identical to Medicare at annual fixed rates even though the health care needs of the covered
    populations, mostly the elderly, vary greatly.
    Humans being human, diagnoses in healthcare records may be miscoded,
    inappropriately added, or otherwise faulty by accident or mal intent. UnitedHealth suggests that
    the error rate can be as high as 20%. See Compl. [Dkt. 1] ¶ 38; see also Hearing Tr. at 28. In the
    7
    past, neither CMS nor the insurers made efforts to review proactively the diagnosis codes
    assigned by healthcare providers. Indeed, as stated above, CMS treats diagnosis codes as
    categorically valid for its own purposes under traditional Medicare, including for setting rates for
    Medicare Advantage. Nonetheless, CMS has long required Medicare Advantage insurers to
    certify “based on best knowledge, information and belief” that the information they provide to
    CMS, including all diagnosis codes, is “accurate, complete, and truthful.” 42 C.F.R.
    § 422.504(l)(2). CMS contends that this pre-existing regulation, and other existing agency
    practices, have long required that diagnosis codes submitted by Medical Advantage insurers be
    supported by underlying medical records (i.e., patient medical charts). UnitedHealth responds
    that neither this pre-existing regulation, nor any other law or regulation, has previously obligated
    the insurance companies who provide Medicare Advantage insurance to validate independently
    the underlying medical records that support diagnosis codes submitted by health care providers.
    For more than a decade, CMS has conducted audits of a subsection of insurers in
    the Medicare Advantage program, through which it has compared the diagnosis codes in bills
    paid by the insurance companies to the underlying patient medical charts and records, which it
    requires the insurers to obtain for this purpose. It has then required repayment to CMS of any
    costs that were based on unsupported diagnosis codes. In 2008, CMS announced that it would
    begin applying these “Risk Adjustment Data Validation (RADV)” audits to extrapolate the error
    rate in the audited sample across an entire insurance contract. 4 The insurer would be responsible
    for returning any overpayment to CMS, based on the extrapolated error rate.
    4
    See Policy and Technical Changes to Parts C and D, 74 Fed. Reg. 54,634, 54,674 (Oct. 22,
    2009) (2009 Proposed RADV Rule) at AR2409 (summarizing the history of the RADV audit
    program); Policy and Technical Changes to Parts C and D, 75 Fed. Reg. 19,678, 19,742-53 (Apr.
    15, 2010) (2010 RADV Rule) at AR2819; Medicare Advantage Risk Adjustment Data
    8
    When CMS sought comments on its new methodology for conducting RADV
    audits, Medicare Advantage insurers immediately protested that the rates paid for each diagnosis
    code are based on traditional Medicare records that are not audited or verified in any way;
    requiring repayment of all amounts seemingly “overpaid” to a Medicare Advantage insurer based
    on audited records would ignore errors in CMS records and violate the statutory requirement of
    actuarial equivalence. 5
    This argument ventures deep into the weeds of actuarial science but is not actually
    disputed by the parties. Nor could CMS really debate it: as a result of the comments it received,
    CMS adopted a “Fee-for-Service Adjuster” or “FFS Adjuster” to the results of RADV audits of
    Medicare Advantage insurance contracts. The FFS Adjuster reflects CMS’s own estimate of the
    error rate in risk factors and diagnosis codes submitted by healthcare providers and paid by CMS
    for its traditional Medicare participants; applied to the results of a RADV audit of a Medicare
    Advantage insurer, it is designed to achieve actuarial equivalence between the two. Thus,
    Medicare Advantage providers must return to CMS any audited “overpayments” to the extent
    that the insurer’s errors exceed the estimated error rate in CMS payments under traditional
    Medicare. See Notice of Final Payment Error Calculation Methodology for Part C Medicare
    Advantage Risk Adjustment Data Validation Contract-Level Audits (Feb. 24, 2012) (RADV
    Final Methodology) at AR5311-15.
    Validation (RADV) Notice of Payment Error Calculation Methodology for Part C Organizations
    Selected for Contract-Level RADV Audits: Request for Comment (Dec. 20, 2010) (RADV
    Methodology Request for Comment) at AR5021-22.
    5
    See generally Aetna Inc. Comments (Jan. 21, 2011) at AR5036-71; Humana Inc.’s Comments
    (Jan. 21, 2011) at AR5102-16; UnitedHealthCare Comments (Jan. 21, 2011) at AR5193-5220;
    see also American Academy of Actuaries Comment on RADV Sampling and Error Calculation
    Methodology (Jan. 21, 2011) (Academy of Actuaries Comment) at AR5235-36.
    9
    UnitedHealth asserts that the 2012 FFS Adjuster works to counteract the fact that
    per-capita payments to Medicare Advantage insurers are based on a less precise set of data—
    belonging to CMS—than that which is reviewed during an audit. Their argument, and CMS’s
    eventual concurrence, are supported by the American Academy of Actuaries, which strongly
    advised CMS that it was not actuarially sound to compare unaudited figures to calculate per-
    capita payments and then audited figures to calculate overpayments. See Academy of Actuaries
    Comment at AR5236 (“This type of data inconsistency not only creates uncertainty, it also may
    create systematic underpayment, undermining the purpose of the risk-adjustment system and
    potentially resulting in payment inequities.”).
    The passage of the Patient Protection and Affordable Care Act (ACA), Pub. L.
    No. 111-148, 124 Stat. 119 (2010), is also directly relevant here. The ACA imposed an
    obligation on Medicare Advantage insurers to report and return any overpayments that an insurer
    discovers on its own. See 42 U.S.C. § 1320a-7k(d)(1) (2012). This section of the ACA defined
    “overpayment” as “any funds that a person receives or retains under [Medicare Advantage] to
    which the person, after applicable reconciliation, is not entitled.” 
    Id. § 1320a-7k(d)(4)(B).
    The
    law further required that any “overpayment . . . be reported and returned [within] 60 days after
    the date on which the overpayment was identified.” 
    Id. § 1320a-7k(d)(2).
    If an insurer in the
    Medicare Advantage program fails to return such a discovered overpayment within 60 days of
    identifying it, that failure renders the insurer’s initial but faulty claim for payment a violation of
    the False Claims Act (FCA). 
    Id. § 1320a-7k(d)(3)
    (“Any overpayment retained by a person after
    the deadline for reporting and returning the overpayment . . . is an obligation (as defined in
    section 3729 (b)(3) of title 31) for purposes of section 3729 of such title.”); cf. False Claims Act,
    31 U.S.C. § 3729(b)(3). Claims for overpayments under the False Claims Act carry the potential
    10
    for treble damages, civil penalties, and debarment from Medicare. See 31 U.S.C.
    § 3729(a)(1)(G) (providing for civil penalties and treble damages); 42 C.F.R. § 424.535(a)
    (describing grounds for revocation of enrollment in the Medicare program). Further, non-
    government qui tam plaintiffs may bring FCA claims in federal court. See 31 U.S.C. § 3730(b).
    The Affordable Care Act established a basic statutory framework but left several
    crucial terms undefined. It did not define at what point an insurer might be said to have
    “identified” an overpayment, thus triggering the 60-day clock; nor did it outline the scope of
    “applicable reconciliation” or state how “overpayments” and “actuarial equivalence” in
    payments are related.
    We come to the 2014 Final Rule at issue here. CMS issued a notice of proposed
    rulemaking in January 2014 and sought comments. 6 CMS proposed to “clarify the statutory
    definition of overpayment” with a new regulation titled “Reporting and Returning
    Overpayments,” to be codified at 42 C.F.R. § 422.326. See 79 Fed. Reg. at 1996, 2055-56 (June
    29, 2000) (AR80 at AR139-40).
    CMS published its Final Rule on May 23, 2014, and in so doing finalized 42
    C.F.R. § 422.326 concerning overpayments. 7 Under the 2014 Overpayment Rule, any diagnostic
    code that is inadequately documented in a patient’s medical chart results in an “overpayment.”
    
    Id. at 29,921
    (AR1313). Further, an overpayment is “identified” whenever a Medicare
    Advantage insurer determines, “or should have determined through the exercise of reasonable
    6
    See Contract Year 2015 Policy and Technical Changes to the Medicare Advantage and the
    Medicare Prescription Drug Benefit Programs, 79 Fed. Reg. 1918, 1918-2073 (Jan. 10, 2014)
    (2014 Proposed Rule) at AR1 et seq.
    7See Contract Year 2015 Policy and Technical Changes to the Medicare Advantage and the
    Medicare Prescription Drug Benefit Programs, 79 Fed. Reg. 29,844, 29,844-968 (May 23, 2014)
    (2014 Overpayment Rule) at AR1235 et seq.
    11
    diligence,” that it had received an overpayment. 
    Id. at 29,923
    (AR1315). CMS further defined
    reasonable diligence as requiring “at a minimum . . . proactive compliance activities conducted
    in good faith by qualified individuals to monitor for the receipt of overpayments.” 
    Id. UnitedHealth alleges
    that these obligations apply a simple negligence standard for purposes of
    False Claims Act liability, which is contrary to the standards in the False Claims Act itself. See
    31 U.S.C. § 3729(b)(1) (defining “knowing” and “knowingly” to include “actual knowledge,”
    “deliberate ignorance,” or “reckless disregard of the truth or falsity of the information”). At oral
    argument, CMS essentially conceded that the 2014 Overpayment Rule imposed a negligence
    standard with a purported False Claims Act enforcement mechanism:
    The Court: It’s a negligence standard, knew or should have known?
    [Defense Counsel]: . . . . [T]he rule does interpret the statutory
    language identified to mean not only literally knew about the
    overpayment, but also if you for instance have an entirely deficient
    compliance program and that is the reason, and your failure to have
    the appropriate compliance program is the reason you didn’t learn
    of an overpayment that you should have learned of, then we will also
    begin the clock on that . . . .
    The Court: . . . . The definition of identified doesn’t mean knew, it
    means knew or with reasonable diligence should have known or
    maybe didn’t care to look.
    [Counsel]: Yes, your Honor.
    The Court: That’s all negligence.
    [Counsel]: It bears some similarities to negligence, your Honor.
    The Court: Right. So it’s not a knowledge based thing?
    [Counsel]: Not as it has been interpreted in the overpayment rule.
    Hearing Tr. at 34-36.
    12
    Most critically for the present challenge, the 2014 Overpayment Rule did not
    adopt something like an “FFS Adjuster” to recognize that the sources of data are not compatible,
    i.e., unaudited traditional Medicare records to determine payments to Medicare Advantage
    insurers and audited medical charts to determine overpayments. UnitedHealth argues that the
    2014 Overpayment Rule thus fails to ensure “actuarial equivalence” between CMS’s own costs
    and what CMS pays Medicare Advantage insurers to provide the same coverage. Rather, it
    subjects the insurers to a more searching form of scrutiny than CMS applies to its own enrollee
    data, thus resulting in a false appearance of better health among Medicare Advantage
    beneficiaries compared to traditional Medicare participants and systemic underpayments for
    healthcare costs to Medicare Advantage insurers. UnitedHealth also argues that the “negligence”
    standard of liability imposed by the 2014 Overpayment Rule constitutes an unlawful departure
    from the standard for liability under the False Claims Act.
    The original Complaint in this matter was filed January 29, 2016, and CMS filed a
    motion to dismiss, which the Court denied on March 31, 2017. See 3/31/2017 Order [Dkt. 26];
    Mem. Op. [Dkt. 25]. The parties proceeded to summary judgment briefing. Defendants filed the
    Administrative Record on July 14, 2017, see Notice of Filing and Serv. of Admin. Record [Dkt.
    40], and UnitedHealth moved to supplement it. See Mot. for Leave to File Suppl. to the Admin.
    Record [Dkt. 44]. After full briefing, the Court granted the motion to supplement with two
    documents related to the FFS Adjuster for RADV Audits, see Mem. Op. [Dkt. 68]; 8/1/18 Order
    [Dkt. 69]; the parties filed a joint appendix to the administrative record including the additional
    documents. See Notice of Submission of Suppl. Joint Appx. [Dkt. 70]; Joint Mot. for Leave to
    File Corrected Joint Appx. Vol. 2 [Dkt. 71]; 8/7/18 Minute Order (granting motion to file
    13
    corrected volume). Summary judgment is now fully briefed, 8 with the addition of a brief amicus
    curiae in support of Plaintiffs, without objection from CMS, by America’s Health Insurance
    Plans. See Amicus Brief [Dkt. 62]. The Court heard oral argument from the parties on August 8,
    2018. See Hearing Tr.
    III. LEGAL STANDARD
    Summary judgment is available when “the movant shows that there is no genuine
    dispute as to any material fact and the movant is entitled to judgment as a matter of law.” Fed.
    R. Civ. P. 56(a). A fact is material if it is capable of affecting the outcome of litigation.
    Anderson v. Liberty Lobby, Inc., 
    477 U.S. 242
    , 247-48 (1986). A dispute is genuine if the
    evidence is such that a reasonable jury could return a verdict for the non-moving party. 
    Id. Summary judgment
    is the proper stage for determining whether, as a matter of
    law, an agency action is supported by the administrative record and is consistent with
    the Administrative Procedure Act (APA). Richards v. INS, 
    554 F.2d 1173
    , 1177 (D.C. Cir.
    1977). The APA provides that “[t]he reviewing court shall . . . hold unlawful and set aside
    agency action” that is “arbitrary, capricious, an abuse of discretion, or otherwise not in
    accordance with law,” or that is “in excess of statutory jurisdiction, authority, or limitations, or
    short of statutory right.” 5 U.S.C. §706(2)(A), (C). Arbitrary and capricious review is
    “narrow.” Citizens to Preserve Overton Park, Inc. v. Volpe, 
    401 U.S. 402
    , 416 (1971). The
    Court is not to “substitute its judgment for that of the agency.” Motor Vehicle Mfrs. Ass’n of
    U.S., Inc. v. State Farm Mut. Auto. Ins. Co., 
    463 U.S. 29
    , 43 (1983). Rather, the Court must
    determine whether the agency “examine[d] the relevant data and articulate[d] a satisfactory
    8
    See Pls.’ Mot. for Summary J. (United Mot.) [Dkt. 47]; CMS Mot.; Mem. in Opp’n to Mot. for
    Summ. J. [Dkt. 58]; Pls.’ Mem. in Opp’n to Cross-Mot. for Summ. J. (Pls.’ Opp’n & Reply)
    [Dkt. 60]; Reply to Opp’n to Mot. for Summ. J. [Dkt. 61]; Defs.’ Reply to Opp’n to Cross-Mot.
    for Summ. J. (Defs.’ Reply) [Dkt. 64].
    14
    explanation for its action, including a ‘rational connection between the facts found and the
    choice made.’” 
    Id. (quoting Burlington
    Truck Lines v. United States, 
    371 U.S. 156
    , 168 (1962)).
    The Court’s review is limited to the administrative record, Holy Land Found. For Relief and
    Dev. v. Ashcroft, 
    333 F.3d 156
    , 160 (D.C. Cir. 2003), and the party challenging an agency’s
    action bears the burden of proof, City of Olmsted Falls v. FAA, 
    292 F.3d 261
    , 271 (D.C. Cir.
    2002).
    III. ANALYSIS
    A. Statutory Requirement of “Actuarial Equivalence”
    The statutory provision at issue states that “the Secretary shall adjust the payment
    amount” of fixed monthly payments to Medicare Advantage insurers “for such risk factors as
    age, disability status, gender, institutional status, and such other factors as the Secretary
    determines to be appropriate, including adjustment for health status . . . so as to ensure actuarial
    equivalence.” 42 U.S.C. § 1395w-23(a)(1)(C)(i). A traditional rule of statutory interpretation
    renders the use of “shall” a mandatory obligation. See Anglers Conserv. Network v. Pritzker,
    
    809 F.3d 664
    , 671 (D.C. Cir. 2016) (citing Antonin Scalia & Bryan A. Garner, READING LAW:
    THE INTERPRETATION OF LEGAL TEXTS 112 (2012)).
    UnitedHealth argues that the 2014 Overpayment Rule violates the statutory
    mandate of “actuarial equivalence.” CMS responds that Medicare Advantage insurers are paid
    “a sum equal to the cost that CMS would expect to bear in providing traditional Medicare
    benefits to a given beneficiary” and there is thus “equivalence between an expected cost, on the
    one hand, and a known payment, on the other.” CMS Mot. at 36.
    In its briefs, CMS fails adequately to address the actuarial problem posed by the
    2014 Overpayment Rule because of the different data sources on which it rests; the same
    actuarial problem was recognized and mitigated by CMS in 2012 with the FFS Adjuster for
    15
    RADV audits but, surprisingly, omitted in 2014. The record is clear that payments for care
    under traditional Medicare and Medicare Advantage are both set annually based on costs from
    unaudited traditional Medicare records, but the 2014 Overpayment Rule systemically devalues
    payments to Medicare Advantage insurers by measuring “overpayments” based on audited
    patient records. This distinction makes an actuarial difference.
    In plain English, doctors treating patients under traditional Medicare bill CMS by
    the procedure involved and not by diagnosis code(s). While the doctors are required to enter
    diagnosis codes, that information is irrelevant to payment. As far as the record reveals, the
    diagnosis codes in traditional Medicare are never verified because they do not matter to payment.
    “[T]he risk adjustment model is built on unaudited data about traditional, fee-for-service
    Medicare beneficiaries, which must contain errors.” CMS Mot. at 37. However, those very
    same diagnosis codes are presumed to have been accurate when CMS inputs all the data
    concerning beneficiaries of traditional Medicare into its regression model, which ultimately
    computes a value for each diagnosis. In consequence, the rates at which CMS pays Medicare
    Advantage insurers are based on flawed data across the millions of people in traditional
    Medicare. Yet the 2014 Overpayment Rule ignores those flaws when defining an
    “overpayment.”
    It is critical to appreciate that CMS does not claim that it audits traditional
    Medicare patient records; to the contrary, it accepts their diagnosis codes as given. See CMS
    Mot. at 7 (agreeing that traditional Medicare payments to doctors “depend only on the services . .
    . and not in any way on the diagnoses submitted”). It is also critical to appreciate that CMS does
    not show more errors or fraud in the charts of Medicare Advantage beneficiaries than in the
    charts of traditional Medicare beneficiaries. But the effect of the 2014 Overpayment Rule,
    16
    without some kind of adjustment, is that Medicare Advantage insurers will be paid less to
    provide the same healthcare coverage to their beneficiaries than CMS itself pays for comparable
    patients. This inequity is inevitable because CMS sets Medicare Advantage rates based on costs
    that are presumed, based on traditional Medicare diagnosis codes, to be associated with
    particular health status information that is not verified in underlying patient records. The same
    unverified diagnosis is, under the 2014 Overpayment Rule, treated as an overpayment that must
    be repaid, thus reducing the reimbursement to a Medicare Advantage insurer while requiring no
    such reduction in payment under traditional Medicare. Similarly auditing CMS records for
    errors or fraud could resolve the difference, if the audits were timely and if CMS were able to
    construct a legitimate program to carry out such audits. See Hearing Tr. at 26 (Plaintiffs’ counsel
    explaining that CMS data is not audited prior to determining risk coefficients). This statement is
    not made to denigrate CMS but to recognize the difficulty involved.
    Neither party cites, and the Court has not located, any case in which a court has
    defined the precise meaning of “actuarial equivalence” as used in 42 U.S.C. § 1395w-
    23(a)(1)(C)(i). Congress used the same language in the Employee Retirement Income Security
    Act (ERISA), 29 U.S.C. § 1054(b)((1)(H)(iii)(I), (c)(3); and the D.C. Circuit has construed its
    meaning in that context. In Stephens v. U.S. Airways Grp., Inc., 
    644 F.3d 437
    (D.C. Cir. 2011),
    the Circuit “assume[d]” that “Congress intended that term of art to have its established
    meaning,” that “[t]wo modes of payment are actuarially equivalent when their present values are
    equal under a given set of actuarial assumptions.” 
    Id. at 440
    (emphasis added). The Seventh
    Circuit has found that ERISA requires “actuarial equivalence between a lump sum and an
    accrued pension benefit,” and determined that this comparison was comparable to equivalence
    17
    “between a present and a future value.” Berger v. Xerox Corp. Ret. Income Guar. Plan, 
    338 F.3d 755
    , 759 (7th Cir. 2003).
    The term also appears in the Medicare Part D statute, which provides that certain
    prescription-drug coverage is subject to an “actuarial equivalence requirement” that is described
    in implementing regulations as “a state of equivalent value demonstrated through the use of
    generally accepted actuarial principles and in accordance with . . . CMS actuarial guidelines.” 42
    C.F.R. § 423.4; see also 42 U.S.C. § 1395w-113(b)(5). According to CMS, the Medicare Part D
    provision requires “actuarial equivalence to compare the expected value [of covered prescription
    drugs] to the beneficiary (or, seen differently, the expected cost to the insurer) of different
    benefit plans.” CMS Mot. at 29.
    Based on these references to actuarial equivalence, CMS argues that the term
    “means to equate either an expected value with a known value (as in the case of an annuity and a
    lump sum payment) or two expected values (as in the case of benefit plans).” 
    Id. at 30.
    In
    particular, CMS insists that the risk adjustment model for determining Medicare Advantage
    payment rates for each diagnostic code results in actuarial equivalence between the per capita
    payments to the insurers and payments for services by traditional Medicare. In this argument,
    CMS happily ignores the requirements of the 2014 Overpayment Rule that an insurer repay
    within 60 days any overpayment, no matter its degree, about which it knew or “should have
    determined through the exercise of reasonable diligence.” 42 C.F.R. § 422.326(c).
    Of particular assistance here, the D.C. Circuit specifically noted that two figures
    are actuarially equivalent only when they share “a given set of actuarial assumptions.” 
    Stephens, 644 F.3d at 440
    . In the Stephens context and here, this Court interprets “given” to mean “the
    same,” as in two figures are actuarially equivalent when they share the same set of actuarial
    18
    assumptions. Different assumptions behind the elements of a calculation would, necessarily,
    result in actuarially non-equivalent results.
    CMS is the insurer for traditional Medicare. Under the 2014 Overpayment Rule,
    however, the “expected cost” to the government insurer for traditional Medicare, i.e., CMS,
    would be less than the “expected cost” to a private insurance company offering Medicare
    Advantage coverage. The problem would immediately arise when a Medicare Advantage insurer
    found its payments from CMS lower than traditional Medicare payments for comparable
    patients, due to reductions for any “overpayments” as defined by the 2014 Overpayment Rule.
    The use of unaudited CMS data, with its known and unknown errors, to set the rates by which
    Medicare Advantage insurers are paid and then the use of audited data to define “overpayments”
    will lead to this result. See Academy of Actuaries Comment at AR5235 (“An underlying
    principle of risk-adjustment systems is that there needs to be consistency in the way the model
    was developed and how it is used. The [model’s] risk-adjustment factors were developed with
    FFS data that, to the best of our knowledge, were not validated or audited for accuracy.”).
    RADV audits, of course, are conducted for the same purpose as the 2014
    Overpayment Rule: to identify those claims for medical care that are not supported by medical
    diagnoses. In the context of an RADV audit, a contract-wide “error rate” is extrapolated from a
    sample and extended to an entire contract; a Medicare Advantage insurer may be required to
    return monies to CMS based on the extrapolated error rate. In that context, CMS heeded the
    advice of actuaries and adopted the FFS Adjuster to achieve actuarial equivalence between
    Medicare Advantage and traditional Medicare. Under an RADV audit, therefore, an
    “overpayment” is shown when, and only when, the error rate for a Medicare Advantage contract
    is greater than the CMS error rate. See RADV Final Methodology at AR5314 (“[T]o determine
    19
    the final payment recovery amount, CMS will apply a Fee-for-Service Adjuster . . . as an offset
    to the preliminary recovery amount.”).
    The base rate for the “average Medicare beneficiary” and specific rates for
    diagnosis codes are determined using unverified CMS data. From this uncontested fact,
    UnitedHealth argues that relying on audited data to identify alleged overpayments to Medicare
    Advantage insurers is actuarially unsound and violates the statute. It contends that the statutory
    mandate of actuarial equivalence requires CMS to use the “same methodology” for each. See 42
    U.S.C. § 1395w-23(b)(4)(D). According to the argument, CMS cannot subject the diagnosis
    codes underlying Medicare Advantage payments to a different level of scrutiny than it applies to
    its own payments under traditional Medicare without impermissibly skewing the calculus: by
    doing so, it ensures that there will not be actuarial equivalence between traditional Medicare
    payments and Medicare Advantage payments for comparable patients.
    CMS fails to respond adequately. The agency has been explicit that the 2014
    Overpayment Rule requires “proactive compliance activities” and other measures to ensure that
    overpayments, defined as any unsupported diagnosis, are identified and repaid promptly. 79
    Fed. Reg. at 29,923 (AR1315). Given its definitions and this proactive obligation, the
    “expected” value of payments from CMS for healthcare costs under Medicare Advantage plans
    will be lower than the “expected” payments CMS itself will make under traditional Medicare,
    since CMS does not audit or engage in similar self-examination for accuracy of its own records.
    The consequence is inevitable: while CMS pays for all diagnostic codes, erroneous or not,
    submitted to traditional Medicare, it will pay less for Medicare Advantage coverage because
    essentially no errors would be reimbursed. See Academy of Actuaries Comment at AR5235.
    20
    The Court finds that the 2014 Overpayment Rule establishes a system where “actuarial
    equivalence” cannot be achieved.
    B. Statutory Requirement of “Same Methodology”
    UnitedHealth argues that the 2014 Overpayment Rule violates other statutory
    requirements as well. In computing expenditures for traditional Medicare (information that
    determines patient risk scores and Medicare Advantage payment rates), CMS must “us[e] the
    same methodology as is expected to be applied in making payments” to Medicare Advantage
    plans. 42 U.S.C. § 1395w-23(b)(4)(D). UnitedHealth insists that CMS fails to comply with this
    mandate because the “methodology” applied in “making payments” to the insurers involves
    reconciliation based strictly on audited diagnosis codes for Medicare Advantage patients, in
    sharp contrast to unverified diagnosis codes for traditional Medicare patients from which
    payment rates were set. The argument also raises the question of the meaning of “applicable
    reconciliation” contemplated by the statute. 
    Id. § 1320a-7k(d)(4)(B).
    The logic of the earlier
    discussion of “actuarial equivalence” commands the results here. 9
    For present purposes, the fly in the ointment is that CMS recognized the actuarial
    need to apply an FFS Adjuster to the RADV audit program because of its failure, as proposed, to
    maintain actuarial equivalence in payments between traditional Medicare and Medicare
    Advantage but CMS refused to maintain such actuarial equivalence in the 2014 Overpayment
    Rule. Yet without some adjustment, the entire Rule would fail. Whether analyzed as a direct
    9
    The parties argue about the validity of CMS risk factors and risk scores, which, as stated, form
    the basis for (unaudited) CMS payments to traditional Medicare beneficiaries and payments to
    Medicare Advantage plans (subject to RADV audits and to the 2014 Overpayment Rule). Going
    back to these basics and redefining all the risk factors and all the diagnostic codes to account,
    within that structure, for actuarial equivalence may be the preferred approach but the very heart
    quakes at the thought, if one or more actuarially-sound “adjusters” might resolve the obvious
    dissonance in the 2014 Overpayment Rule.
    21
    question of the statutory requirement of actuarial equivalence or an indirect question of the
    requirements of explicit statutory language concerning “same methodology,” the result is the
    same: the 2014 Overpayment Rule fails to recognize a crucial data mismatch and, without
    correction, it fails to satisfy 42 U.S.C. § 1395w-23(b)(4)(D).
    C. Arbitrary and Capricious
    It is established law that an agency must provide a legitimate reason for departing
    from or rejecting a previous rule. See Motor Vehicle Mfrs. Ass’n of U.S., Inc. v. State Farm
    Mutual Auto. Ins. Co., 
    463 U.S. 29
    , 42 (1983). This principle also applies to changes to an
    agency’s policy. See Nat’l Cable & Telecomms. Ass’n v. Brand X Internet Servs., 
    545 U.S. 967
    ,
    1001 (2005) (“[T]he Commission is free within the limits of reasoned interpretation to change
    course if it adequately justifies the change.”) (emphasis added). UnitedHealth complains that the
    2014 Overpayment Rule departs from prior CMS policies and pronouncements without rationale
    or justification and is therefore arbitrary and capricious. It identifies four categories of prior
    statements by CMS that arguably established an agency position that is contrary to the 2014
    Overpayment Rule.
    The first, most recent, and most apt is the stated rationale on which CMS
    ultimately included the FFS Adjuster in the RADV audit process, as explained in the official
    notice of the methodology CMS would use to extrapolate payment errors to a contract-wide error
    rate. See RADV Final Methodology at AR5311-15. After notice and comment on the proposed
    audit process, including from the American Academy of Actuaries, CMS explained:
    CMS will apply a Fee-for-Service Adjuster (FFS Adjuster) amount
    as an offset to the preliminary recovery amount. . . . The FFS
    adjuster accounts for the fact that the documentation standard used
    in RADV audits to determine a contract’s payment error (medical
    records) is different from the documentation standard used to
    develop the [MA] risk-adjustment model (FFS claims). The actual
    22
    amount of the adjuster will be calculated by CMS based on a
    RADV-like review of records submitted to support FFS claims data.
    RADV Final Methodology at AR5314-15 (emphasis added). 42 U.S.C. § 1395w-23(b)(4)(D).
    (At oral argument, counsel for CMS stated that the anticipated audit, whose goal is to “publish[]
    a finalized FFS adjuster,” is not concluded. See Hearing Tr. at 31-32.) UnitedHealth urges the
    Court to find that this CMS explanation of the need for an FFS Adjuster for audits, due to the
    different data sources from which pay rates and error rates are determined, is a singular and
    strong demonstration of the inadequacies of the 2014 Overpayment Rule, which is based on the
    same dissimilar data sources but lacks such an adjustment.
    Second, UnitedHealth points to two notices from CMS that recognized the
    differences in data for traditional Medicare and Medicare Advantage healthcare coverage. It
    notes the CMS rationale for applying a “Coding Intensity Adjustment” to Medicare Advantage
    insurers. Medicare Advantage plans contain more diagnosis codes than does traditional
    Medicare, which could lead to overpayments relative to traditional Medicare costs for the same
    patient. CMS implemented a Coding Intensity Adjustment to adjust for the higher prevalence of
    diagnosis codes in Medicare Advantage plans. When it did so, CMS emphasized that it was
    concerned about the imbalance in the number of diagnosis codes between traditional Medicare
    and Medicare Advantage and not “improper coding.” Advance Notice of Methodological
    Changes for CY 2009 Parts C and D Rates and Policies (Feb. 22, 2008) (2009 Advance Notice)
    at AR4231 (“We do not assume that the coding pattern differences that we found in our study are
    the result of improper coding. . . . However, because MA coding patterns differ from FFS
    coding patterns, the normalization factor (which is calculated based on FFS coding) does not
    currently adjust for these different coding patterns.”). In addition, UnitedHealth points to a CMS
    2010 rate announcement for Medicare Advantage plans which recognized that because “MA
    23
    payment methodology is based on fee-for-service payments” by traditional Medicare, such
    “plans must code the way Medicare Part A and B providers do in order for risk adjustments to be
    valid.” Announcement of CY 2010 Parts C and D Rates and Policies (Apr. 6, 2009) at AR4335.
    Third, UnitedHealth argues that an Advance Notice for 2004 defined “diagnosis”
    as “keyed to the presence of a diagnosis code in the claims data,” which definition is
    contradicted by the 2014 Overpayment Rule that declares that a “diagnosis” must be supported
    by underlying medical charts. See 2004 Advance Notice at AR3903.
    CMS dismisses these earlier statements as only “varied comments about the
    purpose of the coding difference adjuster, made in an effort to explain why insurers’ search for
    every supportable diagnosis would lead to overpayment.” CMS Mot. at 35. It insists that the
    agency “has always understood a certification of the ‘accuracy’ and ‘truthfulness’ of risk
    adjustment data to require that any reported diagnosis be substantiated” by underlying records.
    
    Id. at 35
    (citing 42 C.F.R. § 422.31(d), (e)); see also 79 Fed. Reg. at 29,921-22 (AR1313-14).
    The CMS argument does not misstate its regulations but misses the point.
    UnitedHealth does not contend that Medicare Advantage insurers should be permitted knowingly
    or recklessly to bill CMS for erroneous diagnosis codes. Instead, it argues that the Medicare
    statute requires CMS to pay for the healthcare of Medicare Advantage beneficiaries in the same
    manner, and by the same standards, by which CMS pays for traditional Medicare beneficiaries.
    That means, for the millions of Americans covered by Medicare and Medicare Advantage, that
    there are error rates; UnitedHealth argues that it should not be subject to lesser payments, False
    Claims Act liability, or debarment for errors over these huge populations that are fewer than
    those errors made by CMS itself.
    24
    CMS fails to address the central issue here. The question is whether the
    documents cited by UnitedHealth constitute an agency policy or position from which the 2014
    Overpayment Rule deviated without a reasoned explanation. More specifically, UnitedHealth
    argues that the analysis in the RADV Final Methodology constituted an agency decision or
    policy that recognized the necessity of an FFS Adjuster-type procedure to account for
    discrepancies between the documentation for setting payments to Medicare Advantage insurers
    and that used for determining whether an “overpayment” had occurred. As to this argument,
    CMS is essentially silent.
    Agency policies and practices may take many forms and still be sufficiently
    established so that any change in the policy must be explained. Republic Airline Inc. v. U.S.
    Dept. of Transp., 
    669 F.3d 296
    (D.C. Cir. 2012), provides a good example. That case involved
    the transfer of “slot exemptions,” by which airlines operate out of high-traffic airports.
    Specifically, after a corporate acquisition, the new parent corporation planned to use an existing
    slot exemption exactly as it had been used before the acquisition took place. Because the
    corporate entity operating the flight had “ceased to exist as a carrier,” the Department of
    Transportation (DOT) decided that the new entity’s use of the predecessor’s slot exemption
    would constitute a transfer in violation of federal law. 
    Id. at 301
    (quoting DOT letter). In
    isolation, its reasoning was not illogical but the D.C. Circuit overruled it nonetheless. Since
    DOT had previously permitted slot exemptions to continue in use after similar corporate
    changes, its decision that Republic Air resulted in an impermissible “transfer” was found to be
    arbitrary and capricious. 
    Id. at 300-02.
    This Court comes to the same conclusion. Having recognized that actuarial
    equivalence, mandated by statute, required an FFS Adjuster for purposes of defining
    25
    overpayments because of dissimilar data for RADV audits, CMS provides no legitimate reason
    for abandoning that statutory mandate in the context of the 2014 Overpayment Rule. The Court
    finds that CMS was arbitrary and capricious in adopting the 2014 Overpayment Rule without
    explaining its departure from prior policy. 10
    D. False Claims Act Liability
    1. Negligence Standard
    UnitedHealth further complains that the 2014 Overpayment Rule unlawfully
    imposes a negligence standard on Medicare Advantage insurers to identify and report
    “overpayments,” which is inconsistent with the standards of the False Claims Act to which it
    would otherwise align enforcement. CMS objects, contending that the standard adopted in the
    2014 Overpayment Rule, including its requirement of “reasonable diligence,” is
    indistinguishable from the CMS 2000 Rule that required Medicare Advantage insurers to certify
    to the accuracy of risk adjustment data. See Medicare + Choice Program, 65 Fed. Reg. 40,170,
    40,268 (June 29, 2000) (2000 Rule) (AR2006)). CMS insists that the 2014 Overpayment Rule
    only “prevents . . . willful ignorance (or reckless disregard), but no more.” CMS Mot. at 44.
    Back to basics. The ACA requires that “[a]n overpayment must be reported and
    returned” within “60 days after the date on which the overpayment was identified.” 42 U.S.C.
    10
    UnitedHealth further urges the Court to find that “it is inherently arbitrary and irrational to
    calibrate a payment model using one type of data and then operate the model using a different
    type of data.” United Mot. at 32. As discussed above, the Court recognizes and gives substantial
    weight to the American Academy of Actuaries’ analysis of why it is actuarially unsound to
    “apply the risk-adjustment model in a way that is inconsistent with the way it was developed.”
    Academy of Actuaries Comment at AR5235. Further, “‘unexplained departure from prior
    agency determinations’ is inherently arbitrary and capricious.” Nat’l Treasury Emps. Union v.
    Fed. Labor Relations Auth., 
    404 F.3d 454
    (D.C. Cir. 2005) (quoting Am. Fed. of Gov’t Emps.,
    Local 2761 v. FLRA, 
    866 F.2d 1443
    , 1446 (D.C. Cir. 1989)). The Court contents itself with
    finding that the failure of the 2014 Overpayment Rule to ensure actuarial equivalence violates
    the statute and its unexplained departure from prior agency policy is arbitrary and capricious.
    26
    § 1320a-7k(d)(2). The 2014 Overpayment Rule provides: “The MA organization has identified
    an overpayment when the MA organization has determined, or should have determined through
    the exercise of reasonable diligence, that the MA organization has received an overpayment.” 42
    C.F.R. § 422.326(c). In the preamble to the 2014 Overpayment Rule, CMS explained that such
    reasonable diligence “at a minimum . . . would include proactive compliance activities conducted
    in good faith by qualified individuals to monitor for the receipt of overpayments.” 79 Fed. Reg.
    at 29,923 (AR1315). Failure to do so could place a Medicare Advantage insurer at risk of
    liability under the False Claims Act.
    In contrast, the False Claims Act—which the ACA refers to for enforcement, see
    42 U.S.C. § 1320a-7k(d)(3)—imposes liability for erroneous (“false”) claims for payment
    submitted to the government that are submitted “knowingly.” “Knowingly” is a term of art
    defined in the FCA to include false information about which a person “has actual knowledge,”
    “acts in deliberate ignorance of the truth or falsity of the information,” or “acts in reckless
    disregard of the truth or falsity of the information.” 31 U.S.C. § 3729(b)(1)(A). 11 In summary,
    the FCA and the ACA require actual knowledge, deliberate ignorance, or reckless disregard
    before liability can be found. This, indeed, is the standard CMS itself once adopted: the
    preamble to the 2000 Rule required certification to the “best knowledge, information, and belief”
    of an insurer, with a sanction only in cases of “[a]ctual knowledge of falsity,” “reckless
    disregard,” or “deliberate ignorance.” See 2000 Rule, 65 Fed. Reg. at 40,268 (AR2006). The
    11
    The ACA does not use the term “knowingly” but defines it by cross-reference to the FCA. See
    42 U.S.C. § 1320a-7k(d)(4)(A) (“The terms ‘knowing’ and ‘knowingly’ have the meaning given
    those terms in section 3729(b) of Title 31.”).
    27
    standard in the 2000 Rule (or the FCA or the ACA) is certainly not the standard in the 2014
    Overpayment Rule, however much CMS might want to make it so.
    “Congress clearly had no intention to turn the FCA, a law designed to punish and
    deter fraud, into a vehicle for either ‘punish[ing] honest mistakes or incorrect claims submitted
    through mere negligence’ or imposing ‘a burdensome obligation’ . . . rather than a ‘limited duty
    to inquire.’” United States v. Sci. Applications Int’l Corp., 
    626 F.3d 1257
    , 1274-75 (D.C. Cir.
    2010) (quoting S. Rep. No. 99-345, at 6, 19 (1986)). With these proscriptions in mind, the 2014
    Overpayment Rule extends far beyond the False Claims Act and, by extension, the Affordable
    Care Act. Not being Congress, CMS has no legislative authority to apply more stringent
    standards to impose FCA consequences through regulation.
    2. Definition of “Identified”
    UnitedHealth also notes that the proposal for the 2014 Overpayment Rule stated
    that a Medicare Advantage insurer would have “identified” an overpayment when “it has actual
    knowledge of the existence of the overpayment or acts in reckless disregard or deliberate
    ignorance of the existence of the overpayment.” 2014 Proposed Rule at 1997 (AR81). However,
    the final 2014 Overpayment Rule stated that a Medicare Advantage insurer would have
    “identified” an overpayment when “it has determined, or should have determined through the
    exercise of reasonable diligence, that the MA organization has received an overpayment.” 42
    C.F.R. § 422.326(c). The proposed language was consistent with the 2000 Rule, the FCA and
    the ACA’s reference to the FCA. The CMS proposal intimated nothing about what Medicare
    Advantage insurers should have known, nor about “proactive compliance activities.” While
    CMS argues that there is no new requirement, its change of standards is obvious. Cf. 2000 Rule,
    28
    65 Fed. Reg. at 40,268 (AR2006) (providing for sanctions only if insurers certify information
    despite their “actual knowledge,” “reckless disregard,” or “deliberate ignorance” of its falsity).
    A regulation “violates the APA, if it is not a ‘logical outgrowth’ of the agency’s
    proposed regulations.” Ass’n of Private Sector Colleges and Univs. v. Duncan, 
    681 F.3d 427
    ,
    442 (D.C. Cir. 2012). In such cases, the regulated parties must be afforded “an opportunity to
    comment on new regulations.” 
    Id. “A final
    rule is a logical outgrowth if affected parties should
    have anticipated that the relevant modification was possible.” Allina Health Servs. v. Sebelius,
    
    746 F.3d 1102
    , 1108 (D.C. Cir. 2014). In point of fact, regulated insurers apparently did not
    anticipate that CMS might ultimately define “identified” to include overpayments about which
    an insurer should have known because of “proactive compliance activities.” In the position of
    insurance companies that do not regularly see patient medical records, but only doctor bills,
    Medicare Advantage insurers argued that “identified” overpayments should be identified as ones
    that are “known” to the insurer. UnitedHealth draws attention to its own comment on the
    Proposed Rule argued that “an identified overpayment should be limited to actual knowledge of
    an overpayment.” UnitedHealth Group Comment (Mar. 7, 2014) at AR1040. Agencies may not
    “pull a surprise switcheroo on regulated entities” by adopting an interpretation that significantly
    departs from the one proposed. Envtl. Integrity Project v. EPA, 
    425 F.3d 992
    , 996 (D.C. Cir.
    2005). The Court agrees that CMS did so here, and that 2014 Overpayment Rule imposed a
    distinctly different and more burdensome definition of “identified” without adequate notice.
    29
    IV. CONCLUSION
    For the foregoing reasons, the Court will grant UnitedHealth’s Motion for
    Summary Judgment, Dkt. 47; deny CMS’s Cross-Motion for Summary Judgment, Dkt. 57; and
    vacate the 2014 Overpayment Rule. A memorializing Order accompanies this Opinion.
    Date: September 7, 2018
    ROSEMARY M. COLLYER
    United States District Court
    30