Catholic Health Initiatives Iowa Corp. v. Sebelius , 718 F.3d 914 ( 2013 )


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  • United States Court of Appeals
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued April 15, 2013                  Decided June 11, 2013
    No. 12-5092
    CATHOLIC HEALTH INITIATIVES IOWA CORPORATION, DOING
    BUSINESS AS MERCY MEDICAL CENTER - DES MOINES,
    APPELLEE
    v.
    KATHLEEN SEBELIUS, SECRETARY, UNITED STATES
    DEPARTMENT OF HEALTH AND HUMAN SERVICES,
    APPELLANT
    Appeal from the United States District Court
    for the District of Columbia
    (No. 1:10-cv-00411)
    Stephanie R. Marcus, Attorney, U.S. Department of Justice,
    argued the cause for appellant. With her on the briefs were
    Stuart F. Delery, Acting Assistant Attorney General, Ronald C.
    Machen Jr., U.S. Attorney, and Anthony J. Steinmeyer,
    Attorney.
    Christopher L. Keough argued the cause for appellee. With
    him on the brief were J. Harold Richards and Hyland Hunt.
    John M. Faust was on the brief for amici curiae Southwest
    Consulting Associates, LP, et al. in support of appellee.
    2
    Kenneth R. Marcus was on the brief for amicus curiae
    Quality Reimbursement Services, Inc. in support of appellee.
    Before: GARLAND, Chief Judge, ROGERS, Circuit Judge,
    and SILBERMAN, Senior Circuit Judge.
    Opinion for the Court filed by Senior Circuit Judge
    SILBERMAN.
    SILBERMAN, Senior Circuit Judge: Catholic Health
    Initiatives challenged a decision of the Secretary of Health and
    Human Services denying certain Medicare reimbursements that
    Catholic Health believed it was owed under the Medicare
    statute. The district court held that the Secretary’s decision was
    unlawful because the agency, in calculating reimbursements
    owed for a 1997 cost-reporting period, had retroactively applied
    a 2004 rulemaking without congressional authorization. We
    reverse. The policy on which the agency relied in this case was
    first announced in an adjudication in 2000, not in the 2004
    rulemaking.       We further conclude that the agency’s
    interpretation of the statute is permissible, and the denial of
    reimbursements was not arbitrary and capricious. Catholic
    Health has not shown that it relied to its detriment on the
    position the agency allegedly held before 2000.
    I
    The federal Medicare program provides health insurance
    for the elderly and disabled and reimburses qualifying hospitals
    for services provided to eligible patients. The Medicare statute
    has five parts, two of which are relevant in this case. Part A
    establishes the requirements that individuals must meet to be
    eligible for Medicare benefits and provides such individuals
    insurance for hospital and hospital-related services. See 42
    U.S.C. § 1395c. These benefits include coverage for “inpatient
    3
    hospital services,” id. § 1395d, which generally refers to
    overnight stays in a hospital. But Part A coverage for inpatient
    hospital services is limited to a certain number of days, after
    which coverage is exhausted.             Specifically, Medicare
    beneficiaries are entitled to coverage for the first 90 days of their
    stay, and they may then elect to use up to 60 “lifetime reserve
    days” beyond the first 90 days. 
    42 C.F.R. § 409.61
    (a); see also
    42 U.S.C. § 1395d.
    Part E of Medicare sets out “Miscellaneous Provisions,”
    including a prospective payment system for reimbursing
    hospitals that provide inpatient hospital services covered under
    Part A.      42 U.S.C. § 1395ww(d).           Hospitals receive
    reimbursement based on prospectively determined national and
    regional rates, not on the actual amount they spend, and they
    also receive payment adjustments for some hospital-specific
    factors. See id. §§ 1395ww(d)(2) & (d)(5)(F)(i)(I). The
    adjustment at issue in this case is the “disproportionate share
    hospital” (DSH) adjustment, under which the government pays
    more to hospitals that “serve[] a significantly disproportionate
    number of low-income patients.” Id. § 1395ww(d)(5)(F)(i)(I).
    This provision is based on Congress’s judgment that low-income
    patients are often in poorer health, and therefore costlier for
    hospitals to treat. See Adena Reg’l Med. Ctr. v. Leavitt, 
    527 F.3d 176
    , 177-78 (D.C. Cir. 2008).
    A hospital’s adjustment is based on its “disproportionate
    patient percentage” (DPP), 42 U.S.C. § 1395ww(d)(5)(F)(v) —
    a higher DPP means greater reimbursements because the
    hospital is serving more low-income patients. This figure,
    however, is not the actual percentage of low-income patients
    served; rather, it is an indirect, proxy measure for low income.
    The DPP is statutorily defined as the sum of two fractions, often
    called the “Medicare fraction” and the “Medicaid fraction.” The
    Medicare fraction is:
    4
    [T]he fraction (expressed as a percentage), the
    numerator of which is the number of such hospital’s
    patient days for such period which were made up of
    patients who (for such days) were entitled to benefits
    under part A of [Medicare] and were entitled to
    supplementary security income [SSI] benefits . . . , and
    the denominator of which is the number of such
    hospital’s patient days for such fiscal year which were
    made up of patients who (for such days) were entitled
    to benefits under part A of [Medicare] . . . .
    Id. § 1395ww(d)(5)(F)(vi)(I). The Medicaid fraction is:
    [T]he fraction (expressed as a percentage), the
    numerator of which is the number of the hospital’s
    patient days for such period which consist of patients
    who (for such days) were eligible for medical
    assistance under a State [Medicaid plan], but who were
    not entitled to benefits under part A of [Medicare], and
    the denominator of which is the total number of the
    hospital’s patient days for such period.
    Id. § 1395ww(d)(5)(F)(vi)(II).
    This language is downright byzantine and its meaning not
    easily discernible. The Medicare and Medicaid fractions
    represent two distinct and separate measures of low income —
    SSI (i.e., welfare) and Medicaid, respectively — that when
    summed together, provide a proxy for the total low-income
    patient percentage. The Medicare fraction effectively asks, out
    of all patient days from Medicare beneficiaries, what percentage
    of those days came from Medicare beneficiaries who also
    received SSI benefits? The Medicaid fraction in turn asks, out
    of all patient days in total, what percentage of those days came
    from patients who received benefits under Medicaid, but not
    5
    under Medicare? (The exclusion of Medicare beneficiaries in
    the Medicaid numerator is to avoid double counting such
    individuals in both fractions). As we provided in Northeast
    Hospital Corp. v. Sebelius, 
    657 F.3d 1
    , 3 (D.C. Cir. 2011), a
    visual representation of the two fractions is given below:
    Medicare fraction     Medicaid fraction
    Numerator            Patient days for      Patient days for
    patients “entitled    patients “eligible
    to benefits under     for [Medicaid]”
    part A” and           but not “entitled
    “entitled to SSI      to benefits under
    benefits”             part A”
    Denominator          Patient days for      Total number of
    patients “entitled    patient days
    to benefits under
    part A”
    Many aspects of the DSH adjustment have been challenged
    over the years, but the issue in our case is how to interpret the
    phrase “entitled to benefits under part A” in the Medicaid
    fraction numerator. 42 U.S.C. § 1395ww(d)(5)(F)(vi)(II).
    Specifically, does this language include individuals who meet
    the statutory criteria for Medicare eligibility, but who have
    exhausted their coverage under section 1395d? The answer in
    turn affects the treatment of patient days for those eligible for
    both Medicaid and Medicare, but who have exhausted their
    Medicare benefits (“dual-eligible exhausted days”). If such
    patients are deemed “entitled to benefits under part A” (even
    though their Part A coverage is exhausted), then they would not
    be included in the Medicaid fraction, because the statute
    specifically excludes from this numerator those “entitled to
    benefits under part A.” Of course, even if dual-eligible
    6
    exhausted days are excluded from the Medicaid fraction, they
    could still be included in the Medicare fraction, assuming the
    patients were also entitled to SSI benefits. The parties dispute
    whether the general effect of interpreting “entitled to benefits
    under part A” in this manner would be to increase or decrease
    DSH payments, but in at least some cases, including dual-
    eligible exhausted days in the Medicaid fraction will result in a
    higher DPP, and therefore in greater payments to hospitals.1
    A hospital’s adjustment is calculated in the first instance by
    a fiscal intermediary, which is typically a private insurance
    company acting as the agent of the Secretary. See 
    42 C.F.R. §§ 421.1
    , 421.3, 421.100-.128. A hospital may appeal an
    intermediary’s decision to the Provider Reimbursement Review
    Board, an administrative body appointed by the Secretary, which
    may affirm, modify, or reverse the intermediary’s decision. 42
    U.S.C. § 1395oo (a), (d) & (h). The Secretary in turn may
    affirm, modify, or reverse the decision of the Board. Id.
    § 1395oo (f).
    1
    The mathematical cause of this tendency is that the two
    fractions use different denominators — one that is affected by how
    this issue is resolved, and one that is not. The Medicaid denominator
    is simply the total patient days, but the Medicare denominator is only
    patient days for those entitled to benefits under Medicare. So if
    “entitled to benefits” is construed broadly to include exhausted
    benefits, then dual-eligible exhausted days are excluded from the
    Medicaid numerator, causing that fraction to go down. But even if
    such days are added to the Medicare numerator (for those patients also
    receiving SSI benefits), they are added to the Medicare denominator
    as well, which dilutes the effect of counting such days in this fraction.
    So while the Medicare fraction itself might go up, the magnitude of
    this increase will often be less than the corresponding decrease in the
    Medicaid fraction (though the exact result will depend on the relative
    number of days hospitals spend treating Medicare patients, dual-
    eligible patients, Medicare/SSI patients, and other patients).
    7
    * * *
    Catholic Health Initiatives owns and operates Mercy
    Medical Center, a hospital in Des Moines. In the 1997 fiscal
    period, the Hospital discharged two patients who had been
    inpatients since 1992, and whose patient days included many
    dual-eligible exhausted days — that is, for much of these
    patients’ stays, they were both eligible for Medicaid and
    enrolled in Medicare, but they had exhausted their Medicare
    coverage for inpatient hospital services. The Hospital filed cost
    reports with its fiscal intermediary, and in 1999, the
    intermediary issued an adjustment payment determination for
    the Hospital’s 1997 cost-reporting period. That determination
    initially included dual-eligible exhausted days in the Medicaid
    fraction numerator, which meant the intermediary was not
    counting exhausted days as days for which the patients were
    “entitled to benefits” under Medicare — which, of course, was
    beneficial to the Hospital.
    But in 2000, the Department decided Edgewater Medical
    Center v. Blue Cross & Blue Shield Ass’n, HCFA Adm’r Dec.,
    
    2000 WL 1146601
     (June 19, 2000),2 and stated that dual-eligible
    exhausted days should not be included in the Medicaid fraction.
    
    Id. at *4
    . Then, in 2002, responding to the Edgewater decision,
    Catholic Health’s intermediary revised its calculations and
    excluded the dual-eligible exhausted days it had previously
    included for the Hospital’s 1997 cost-reporting period. Catholic
    2
    The administrative decisions referred to in this case are those
    made by the Centers for Medicare & Medicaid Services (CMS),
    formerly the Health Care Financing Administration (HCFA). The
    Secretary has authorized the CMS Administrator to act on her behalf
    in reviewing the Board’s decisions, and the Administrator’s review of
    a Board ruling is considered the final decision of the Secretary. See
    
    42 C.F.R. § 405.1875
    .
    8
    Health appealed this decision to the Board, but before the Board
    could consider it, the parties reached a settlement, in which the
    intermediary agreed to include some, but not all, of the dual-
    eligible exhausted days.
    But the issue was reopened in 2005, when the intermediary
    announced that it would again revisit the Hospital’s DSH
    adjustment for 1997.3 The impetus for this second reopening
    was an agency rulemaking in 2004 that “adopt[ed] a policy to
    include the days associated with dual-eligible beneficiaries in
    the Medicare fraction, whether or not the beneficiary has
    exhausted Medicare Part A hospital coverage.” Medicare
    Program; Changes to the Hospital Inpatient Prospective
    Payment Systems and Fiscal Year 2005 Rates, 
    69 Fed. Reg. 48,916
    , 49,099 (Aug. 11, 2004); see also 
    id.
     (“We are revising
    our regulations at [42 C.F.R.] § 412.106(b)(2)(i) to include the
    days associated with dual-eligible beneficiaries in the Medicare
    fraction of the DSH calculation.”). In this rulemaking, the
    Department expressly declined to “include dual-eligible
    beneficiaries who have exhausted their Part A hospital coverage
    in the Medicaid fraction.” Id. The intermediary therefore
    excluded from the Medicaid fraction the patient days it had
    previously agreed to include under the settlement, and the
    Hospital again appealed to the Board.
    To confuse the issue further, the Board reversed the
    intermediary’s decision, holding that the dual-eligible exhausted
    days should have been included in the Medicaid fraction. As a
    matter of statutory interpretation, the Board concluded that the
    phrase “entitled to benefits under part A of [Medicare],” 42
    U.S.C. § 1395ww(d)(5)(F)(vi)(II), meant the right to have
    payment made on the patient’s behalf — so for days where a
    3
    Intermediary determinations may be reopened within three years
    of a decision or final settlement. 
    42 C.F.R. § 405.1885
    (b).
    9
    patient had exhausted his right to payment, he was not “entitled
    to benefits,” and such days should be counted in the Medicaid
    fraction. The Board also pointed to previous decisions and
    statements by the agency in the Federal Register that it thought
    supported this interpretation. The Secretary reversed, however,
    and concluded — consistent with the Edgewater decision — that
    the intermediary had properly excluded the days at issue. The
    Department determined that the word “entitled” in the Medicare
    statute “is not in reference to the right of payment of a benefit,
    but rather the legal status of the individual as a Medicare
    beneficiary under the law.” The Secretary also stated that it was
    a “long-standing policy” to exclude dual-eligible exhausted days
    from the Medicaid fraction, and that any statements or decisions
    to the contrary were not consistent with this policy.
    Catholic Health filed suit under the APA in the District
    Court. The Hospital moved for summary judgment on two
    different grounds — first, that the Secretary’s interpretation of
    the Medicare statute was impermissible; and second, that the
    Secretary’s current position, even if entitled to deference, could
    not be retroactively applied to the 1997 cost-reporting period.
    The district court passed on the statutory-interpretation issue,
    holding that regardless of whether the agency’s interpretation
    was permissible, its decision was an unauthorized retroactive
    application of the 2004 rulemaking. This appeal followed.
    II
    The two main issues on appeal are the validity of the
    agency’s interpretation of the Medicare statute and its
    application to the 1997 cost-reporting period. The Secretary
    argues that the statute clearly states that an individual is
    “entitled to benefits” under Medicare when he meets the basic
    statutory criteria (or at least, that such an interpretation is
    reasonable), and that there was no impermissible retroactivity in
    10
    the agency’s decision because the agency never had a clear
    policy to the contrary. The Hospital argues that the statute
    forecloses the agency’s interpretation because “entitled to
    benefits” means the right to have payment made on one’s behalf,
    and that regardless of whether the agency’s interpretation is
    valid, its decision was impermissibly retroactive because the
    agency held a contrary position in 1997.
    A. “Entitled to benefits”
    The Secretary argues that her interpretation of “entitled to
    benefits under part A of [Medicare]” is not only superior, but
    necessary. Section 1395ww(d)(5)(F)(vi) does not itself define
    the phrase, nor is the meaning of these words obvious on their
    face, but the Secretary legitimately points to related provisions
    that clarify the question. The statutory provision on which the
    agency primarily relies for its interpretive argument is 
    42 U.S.C. § 426
    (a), which states that “[e]very individual who . . . has
    attained age 65, and . . . is entitled to monthly [Social Security
    benefits] . . . shall be entitled to hospital insurance benefits
    under part A of [Medicare].” This language, the Department
    argues, clearly indicates that entitlement to Medicare benefits is
    simply a matter of meeting the statutory criteria, not a matter of
    receiving payment. See also 
    42 C.F.R. § 400.202
     (“Entitled
    means that an individual meets all the requirements for
    Medicare benefits.”).
    In response, Catholic Health points to 
    42 U.S.C. § 426
    (c),
    which provides that “entitlement of an individual to hospital
    insurance benefits for a month shall consist of entitlement to
    have payment made under, and subject to the limitations in, part
    A of [Medicare] on his behalf for inpatient hospital services.”
    (emphasis added). See also 42 U.S.C. § 1395d(a) (“The benefits
    provided to an individual by the insurance program under [part
    A of Medicare] shall consist of entitlement to have payment
    11
    made on his behalf . . . for . . . inpatient hospital services . . . for
    up to 150 days during any spell of illness minus 1 day for each
    day of such services in excess of 90 received during any
    preceding spell of illness . . . .”) (emphasis added). Therefore,
    the Hospital argues, “entitlement” is defined in terms of the right
    to have payment made on one’s behalf, so where an individual
    has exhausted that right, they are no longer entitled to Medicare
    benefits for the purposes of calculating a hospital’s DSH
    adjustment. Catholic Health also contends, somewhat weakly,
    that even if the statute is ambiguous, the Department’s
    interpretation is unreasonable.
    We think it unnecessary to parse all the other provisions of
    the statute the parties cite in support of their respective
    positions. We conclude that, although the Department’s
    interpretation is the better one, it is not quite inevitable. Either
    interpretation seems permissible, a conclusion that is reinforced
    by our recent decision in Northeast Hospital Corp. v. Sebelius,
    
    657 F.3d 1
     (D.C. Cir. 2011). That case also involved a hospital
    challenging the amount of reimbursement it was due, and the
    specific statutory dispute was whether individuals enrolled in
    Medicare Part C were still considered “entitled to benefits under
    part A” for the purposes of computing the Medicaid fraction. 
    Id. at 5
    . The basic arguments made by the parties in Northeast
    Hospital track those made here, and after a lengthy analysis, in
    which we noted “the Medicare statute’s inconsistent and
    specialized use of the phrase ‘entitled to benefits under Part A,’”
    
    id. at 13
    , we found the statute ambiguous on this question.
    Therefore, under Chevron U.S.A., Inc. v. Natural Res. Def.
    Council, Inc., 
    467 U.S. 837
    , 842-43 (1984), we of course defer
    to the Department’s construction. See Metro. Hosp. v. U.S.
    Dep’t of Health & Human Servs., 
    712 F.3d 248
    , 270 (6th Cir.
    2013) (reaching the same conclusion regarding the construction
    of the same provision).
    12
    B. Retroactivity
    The main dispute presented before the district court and
    before us is rather puzzling; the arguments have turned on
    whether the regulation was impermissibly retroactive.4 We
    certainly understand why Catholic Health would embrace that
    framing of the issue — as we stated in Northeast Hospital, “[i]t
    is well settled that an agency may not promulgate a retroactive
    rule absent express congressional authorization.” 
    657 F.3d at
    13
    (citing Bowen v. Georgetown Univ. Hosp., 
    488 U.S. 204
    , 208
    (1988)). But while the 2004 rulemaking was phrased as a matter
    of revised statutory interpretation, it is clear that the regulation
    — at least as it bears on the issue in this case — simply
    reiterated the prior rule of decision first announced in the
    Edgewater adjudication and reaffirmed two years later in Castle
    Medical Center v. Blue Cross & Blue Shield Ass’n, HCFA
    Adm’r Dec., 
    2003 WL 22490097
    , at *10-11 (Sept. 12, 2003).
    And of course, it is black-letter administrative law that
    adjudications are inherently retroactive.                NLRB v.
    Wyman-Gordon Co., 
    394 U.S. 759
    , 763-66 (1969) (plurality
    opinion); SEC v. Chenery Corp., 
    332 U.S. 194
    , 203 (1947);
    Qwest Servs. Corp. v. FCC, 
    509 F.3d 531
    , 539 (D.C. Cir. 2007)
    see also Bowen, 
    488 U.S. at 221
     (“Chenery involved that form
    of administrative action where retroactivity is not only
    permissible but standard. Adjudication deals with what the law
    was; rulemaking deals with what the law will be.”) (Scalia, J.,
    concurring).
    4
    The agency also relies on the alternative — and much more
    difficult — claim that even if the regulation was retroactive, the
    existence of a prior inconsistent policy is irrelevant because the
    Secretary’s present interpretation of the statute is the only permissible
    reading. We need not consider that question because, as we have
    already concluded, the statute can reasonably be interpreted either
    way.
    13
    In short, the premise of the primary argument before the
    district court was fallacious — but given the government’s
    confusing presentation, we certainly do not fault the district
    judge. Indeed, not only has the agency’s briefing on appeal
    seemed to accept the rulemaking framework (relying only
    tangentially on the Edgewater decision), but the Administrator’s
    decision in this very case relied on the 2004 rulemaking, rather
    than the Edgewater decision, as supplying the dispositive rule.
    Nevertheless, the Secretary’s reliance on the 2004
    rulemaking does not necessarily render “retroactive” the
    application of that rule. When a rule is challenged, the first
    question is always whether the rule is substantively valid on its
    face, and as we have already explained, the Secretary’s
    interpretation in this case is permissible under Chevron. The
    next question is whether it is retroactive, meaning that the rule
    itself effected a clear change in the legal landscape and attached
    new legal consequences to past actions. See Arkema Inc. v.
    EPA, 
    618 F.3d 1
    , 7 (D.C. Cir. 2010). But the policy of
    excluding dual-eligible exhausted days from the Medicaid
    fraction was announced four years earlier in Edgewater, and the
    rulemaking was simply a reiteration of this position.5
    5
    The 2004 rulemaking did effect a change with respect to
    whether Medicare-exhausted days could be included in the Medicare
    fraction. Prior to 2004, the Secretary interpreted the phrase “entitled
    to benefits under part A of [Medicare]” in the Medicare fraction to
    include only “covered Medicare Part A inpatient days.” Medicare
    Program; Fiscal Year 1986 Changes to the Inpatient Hospital
    Prospective Payment System, 
    51 Fed. Reg. 16,772
    , 16,777 (May 6,
    1986). Only after the rule went into effect did the agency include in
    the Medicare fraction all days for which patients were eligible for
    Medicare, regardless of whether Medicare actually paid for those days.
    But the dispute in this case turns on whether to include dual-eligible
    exhausted days in the Medicaid fraction, so Edgewater clearly
    established the relevant rule prior to the 2004 rulemaking.
    14
    To be sure, as Catholic Health argues, the Edgewater
    decision contained problems that might have rendered it
    arbitrary and capricious if challenged on direct appeal (which
    perhaps explains why the Secretary has been reluctant to rely on
    it heavily). First, it did not forthrightly discuss prior statements
    and administrative decisions that could be thought inconsistent
    with the interpretation given in that case, and second, it
    erroneously claimed that the agency’s policy at that time was to
    include Medicare-exhausted days in the Medicare fraction (in
    fact, the agency did not follow this practice until the 2004
    rulemaking). 
    2000 WL 1146601
    , at *4. But the issue for
    retroactivity purposes is not whether a prior adjudication is
    substantively sound; it is only whether a prior adjudication does,
    in fact, establish the policy at issue. There is no doubt that the
    Edgewater adjudication set forth the interpretation that governs
    this case prior to the 2004 rulemaking, so the alleged
    retroactivity problem is not one of retroactive rulemaking.
    Thus, the only remaining question, which might be thought
    to have been raised implicitly, is whether applying the
    Edgewater interpretation “retroactively” to Catholic Health is
    improper. Even though adjudication is by its nature retroactive,
    we have recognized that “deny[ing] retroactive effect to a rule
    announced in an agency adjudication” may be proper where the
    adjudication “substitut[es] . . . new law for old law that was
    reasonably clear” and where doing so is “necessary . . . to
    protect the settled expectations of those who had relied on the
    preexisting rule.” Williams Natural Gas Co. v. FERC, 
    3 F.3d 1544
    , 1554 (D.C. Cir. 1993) (quoting Aliceville Hydro Assocs.
    v. FERC, 
    800 F.2d 1147
    , 1152 (D.C. Cir. 1986)). By
    “retroactive effect,” of course, we typically refer to an order or
    penalty with economic consequences, not retroactive application
    of the rule itself — after all, under Wyman-Gordon, an
    adjudication must have retroactive effect, or else it would be
    considered a rulemaking. 
    394 U.S. at 763-66
    .
    15
    The parties have extensively argued whether the Edgewater
    interpretation constituted a legal volte face — that is, whether
    pre-Edgewater agency statements and decisions did, in fact,
    establish a contrary policy. But it is unnecessary for us to
    decide that question in this case because Catholic Health has
    presented no explanation as to how it relied to its detriment on
    the alleged prior policy — neither in its brief, nor when asked
    directly at oral argument.6 So even assuming the Edgewater rule
    was “retroactively” applied to the 1997 cost-reporting period, it
    would not constitute the sort of unfair retroactivity that may
    render an agency decision arbitrary and capricious. The
    judgment of the district court is therefore reversed.
    So ordered.
    6
    The parties’ briefing does not touch at all on detrimental
    reliance, but this issue — along with the broader rulemaking vs.
    adjudication framework discussed above — was explored in some
    detail at oral argument. Had Catholic Health argued that the Secretary
    waived the right to argue a lack of reliance, then the agency might
    well have been foreclosed from prevailing on this point so late in these
    proceedings. But counsel never made any such suggestion — in
    briefing or at oral argument — so we construe Catholic Health as
    having itself waived any waiver argument.