Dutkewych v. Standard Insurance Company , 781 F.3d 623 ( 2015 )


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  •            United States Court of Appeals
    For the First Circuit
    No. 14-1450
    MARK DUTKEWYCH,
    Plaintiff, Appellant,
    v.
    STANDARD INSURANCE COMPANY,
    Defendant, Appellee,
    and
    MINTZ LEVIN COHN FERRIS GLOVSKY & POPEO P.C. GROUP
    LONG TERM DISABILITY PLAN,
    Defendant.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. Denise J. Casper, U.S. District Judge]
    Before
    Lynch, Chief Judge,
    Souter,* Associate Justice,
    and Stahl, Circuit Judge.
    Mala M. Rafik, with whom S. Stephen Rosenfeld was on brief,
    for appellant.
    Brooks R. Magratten, with whom Ronald M. LaRocca and Pierce
    Atwood LLP were on brief, for appellee.
    *
    Hon. David H. Souter, Associate Justice (Ret.) of the
    Supreme Court of the United States, sitting by designation.
    March 30, 2015
    -2-
    LYNCH, Chief Judge.            Plaintiff Mark Dutkewych is a
    participant    in    a     disability     plan   (the    "Plan"),     insured    and
    administered by Defendant Standard Insurance Company under the
    Employee Retirement Income Security Act ("ERISA"), 
    29 U.S.C. § 1001
    et seq.    The Plan limits long-term disability ("LTD") benefits to
    24 months for "a Disability caused or contributed to by . . . :
    (1) Mental Disorders; (2) Substance Abuse; or (3) Other Limited
    Conditions."    Applying this Limited Conditions Provision, Standard
    terminated Dutkewych's benefits after 24 months, on June 1, 2011.
    After Dutkewych's administrative appeal failed, he brought this
    lawsuit against Standard for unpaid benefits.                The district court
    entered summary judgment against Dutkewych's claims.                  Dutkewych v.
    Standard Ins. Co., No. 12-cv-11073, 
    2014 WL 1334169
     (D. Mass. Mar.
    29, 2014).    Dutkewych appealed.
    Dutkewych contests Standard's decision to limit his LTD
    benefits to 24 months, saying he has been diagnosed with chronic
    Lyme disease, "a physical illness that is not limited under the
    terms of the Plan." Despite the hot dispute between the parties on
    this issue, this case does not turn on the insurer's doubts about
    the validity of Dutkewych's diagnosis with chronic Lyme disease.
    Instead,    this    case    turns   on    the    insurer's   application        of   a
    different    provision      of   the     Plan,   the    subset   of   the   Limited
    Conditions Provision related to mental disorders ("Mental Disorder
    Limitation").       Standard maintains that, even if Dutkewych was
    -3-
    disabled as a result of chronic Lyme disease in June 2011, the
    Mental Disorder Limitation nonetheless applies because his mental
    disorders, regardless of their cause, contributed to his disability
    as of June 2011.
    Standard's    interpretation       of   the   Mental   Disorder
    Limitation is reasonable and its application to Dutkewych's case is
    supported by substantial evidence.          We affirm the entry of summary
    judgment to Standard.
    I.   Factual Background
    A.           Standard's LTD Plan
    The   Plan   provides   that   a   participant   qualifies   as
    "Disabled from your Own Occupation if, as a result of Physical
    Disease, Injury, Pregnancy, or Mental Disorder:"
    1. You are unable to perform with reasonable
    continuity the Material Duties of your Own
    Occupation; and
    2. You suffer a loss of at least 20% in your
    Indexed Predisability Earnings when working in
    your Own Occupation.
    The "Maximum Benefit Period" allowed Dutkewych to receive benefits
    to age 65.
    Certain disabilities, however, are subject to a limited
    benefits period ("Limited Conditions Provision").             Specifically,
    "[p]ayment of LTD Benefits is limited to 24 months during your
    entire lifetime for a Disability caused or contributed to by any
    one or more of the following . . . : (1) Mental Disorders; (2)
    -4-
    Substance    Abuse;   or   (3)    Other   Limited   Conditions."     "Mental
    Disorders"     is   defined      to   include   "any   mental,     emotional,
    behavioral, psychological, personality, cognitive, mood or stress-
    related     abnormality,      disorder,     disturbance,   dysfunction    or
    syndrome, regardless of cause . . . or the presence of physical
    symptoms."      "Other Limited Conditions" is defined to include
    chronic fatigue conditions and chronic pain conditions, such as
    fibromyalgia.
    The Plan provides two "Rules for Disabilities Subject to
    Limited Pay Periods":
    1.   If you are Disabled as a result of a
    Mental Disorder or any Physical Disease or
    Injury for which payment of LTD Benefits is
    subject to a limited pay period, and at the
    same time are Disabled as a result of a
    Physical Disease, Injury, or Pregnancy that is
    not subject to such limitation, LTD Benefits
    will be payable first for conditions that are
    subject to the limitation.
    2. No LTD Benefits will be payable after the
    end of the limited pay period, unless on that
    date you continue to be Disabled as a result
    of a Physical Disease, Injury, or Pregnancy
    for which payment of LTD Benefits is not
    limited.
    Standard specified in the Plan that it "ha[s] full and
    exclusive authority to control and manage the Group Policy, to
    administer claims, and to interpret the Group Policy and resolve
    all questions arising in the administration, interpretation, and
    application of the Group Policy."
    -5-
    B.          Dutkewych's Disability
    In early 2008, Dutkewych suffered from mental illness,
    substance abuse, and a dizzying array of physical symptoms that
    have since received competing diagnoses.      Dutkewych left his work
    as an associate attorney at a Boston law firm on October 3, 2008,
    and sought LTD benefits from Standard.         We summarize here the
    relevant chronology of Dutkewych's medical history and Standard's
    decisions concerning his benefits.
    1.     Dutkewych's Early Diagnoses
    In March 2008, Dutkewych began to experience symptoms
    including    "severe   fatigue,    intense   back   pain   and   stomach
    irritation."     His symptoms worsened over the summer as Dutkewych
    developed a painful rash, began bruising and bleeding, suffered
    severe joint pain, and experienced cognitive issues, including
    trouble with reading comprehension, concentration, short term
    memory, directions, organization, and sense of time.        His primary
    care physician, Dr. Eric Serrano, did not identify a cause.
    In August 2008, Dr. Serrano referred Dutkewych to a
    hematologist-oncologist, Dr. Brenda Haynes, who considered the
    possibility of Lyme disease.      At that time, Dutkewych reported "no
    recent viral exposure or tick exposure that he [was] aware of."       A
    blood test returned negative results for Lyme disease, but the test
    results warned that false negatives are possible in the early
    -6-
    stages of the disease before the patient produces detectable levels
    of antibodies.
    Dr. Serrano then referred Dutkewych to a rheumatologist,
    Dr. Don Goldenberg, who examined Dutkewych in September 2008.                 Dr.
    Goldenberg concluded that Dutkewych's "musculoskeletal symptoms are
    consistent      with   what    is    termed     fibromyalgia,    which   overlaps
    significantly with mood and sleep disturbances."                 Dr. Goldenberg
    noted   that    Dutkewych      had    a   history   of    obsessive    compulsive
    disorder, which made it "likely that unexplained physical symptoms
    with multiple physician evaluations would heighten the intensity of
    the symptoms."       He recommended Dutkewych's treatment "be primarily
    regulated by [his] psychiatrist."
    One       week   later,    Dutkewych     visited     the   psychiatric
    emergency department at the Cambridge Hospital.                 He reported his
    mental health history and his more recent somatic symptoms.                    He
    noted his recent diagnosis by Dr. Goldenberg, and attributed his
    worsening depression to the idea that his doctors did not want to
    pursue his physical symptoms. At that time, his wife reported that
    he was "self-medicating" with prescription drugs.                 Dutkewych was
    admitted   to    the    Cambridge     Hospital's     Partial    Hospitalization
    Program, an outpatient program, for the following two weeks.                   At
    discharge,      he   was    diagnosed     with    major   depressive     disorder,
    obsessive compulsive disorder, and generalized anxiety disorder.
    -7-
    In    November     2008,     Dutkewych     visited    a    family
    practitioner, Dr. Jeanne Hubbuch, who ordered additional tests for
    Lyme disease.     This time, Dutkewych reported experiencing no tick
    bites, but noted that ticks had been seen in his house.               Western
    blot test returned positive results for Lyme disease under the
    IGeneX IGG criteria, but negative results under CDC/NYS and Babesia
    FISH criteria.
    On December 9, 2008, Dutkewych was admitted to the McLean
    Hospital for substance abuse treatment.               At the hospital, he
    reported that he had been abusing Vicodin, and explained that he
    had used a stolen credit card to buy things that he then sold to
    pay for drugs.    His intake form noted his recent diagnosis of Lyme
    Disease and his ongoing depression.
    He was discharged from the hospital on December 15, 2008,
    and immediately entered McLean's residential treatment program. In
    an Ambulatory Services Initial Assessment, Dutkewych reported a
    "[l]ongstanding" history of obsessive compulsive disorder and
    episodic depression.         Although his OCD was "in reasonably good
    control,"   his   depressive    symptoms     were    still   significant   and
    included suicidal ideation.        He admitted to persistent and daily
    substance abuse over the last year. Dr. Joshua Katz, who evaluated
    Dutkewych during this time, reported that "[m]any if not all of
    [Dutkewych's] physical and cognitive symptoms can be explained by
    -8-
    chronic   narcotic       use   and   intermittent    withdrawal    symptoms."
    Dutkewych was discharged on January 21, 2009.
    2.         Standard's Approval of Limited LTD Benefits
    On April 16, 2009, Standard approved Dutkewych's claim
    for LTD benefits.          At that time, "a significant portion of the
    medical records in Mr. Dutkewych's claim file relate[d] to his
    psychiatric condition."        The physician consultant who reviewed his
    records noted that "Mr. Dutkewych has had a combination of chemical
    dependency        and    psychiatric    disorder     of   life    threatening
    proportions."       Standard concluded that his claim "supports that as
    of October 4, 2008, [Dutkewych] has been unable to perform with
    reasonable continuity the Material Duties of his Own Occupation due
    to symptoms and treatment related to substance abuse and major
    depression."
    Standard specifically warned Dutkewych that his policy
    "limits payment of LTD benefits to 24 months during your entire
    lifetime for a Disability caused or contributed to by Mental
    Disorders, Substance Abuse or Other Limited Conditions." "As major
    depression is considered to be a Mental Disorder, Standard will be
    applying the Mental Disorder limitation and thus limiting payment
    of LTD benefits to a maximum of 24 months."
    3.         Dutkewych's Treatment for Chronic Lyme Disease
    Between June 2009 and December 2009, Dutkewych entered a
    second    residential       substance     abuse     treatment    program   and
    -9-
    participated in two halfway house programs.                From around June 5 to
    June 22, 2009, Dutkewych was admitted to the McLean Adult Partial
    Hospital and Residential Program.             From June 22 to September 29,
    2009, he resided at Phoenix House Springfield Center, a residential
    facility    for      substance       abuse        treatment     in    Springfield,
    Massachusetts.       From    September       29    to   December     21,   2009,    he
    continued   his   treatment      at    the    "North       Cottage"      Program,    a
    residential facility for substance abuse treatment in Norton,
    Massachusetts.
    During    this   time,    Dutkewych         began   seeing     Dr.   Karen
    Isselbacher, Dr. Luz J. Ruiz, and Dr. Bernard Raxlen.                    Each agreed
    with the diagnosis of Lyme disease.                 Dr. Isselbacher, a primary
    care physician, conducted a spinal tap in July 2009, and found
    elevated levels of proteins which she interpreted as evidence of
    Lyme disease. Dr. Raxlen, a psychiatrist, diagnosed Dutkewych with
    Lyme disease in December 2009 following a SPECT scan and a clinical
    evaluation.   Dr. Ruiz, a neurologist, sought an additional Western
    blot test in December 2010 which returned identical results to the
    test in November 2008 -- positive for Lyme disease under IGeneX
    criteria, but negative for Lyme disease under CDC/NYS criteria.
    Under their care, Dutkewych has intermittently received
    intravenous ("IV") antibiotic treatment for Lyme disease.                        After
    consulting with three physicians, respectively at Columbia, John's
    Hopkins, and Beth Israel, Dr. Isselbacher began to treat Dutkewych
    -10-
    with IV antibiotics in July 2009.           While on IV antibiotics from
    July 2009 to March 2010, Dutkewych reported improved symptoms.             He
    suffered   a    relapse   after    ending   treatment,   and   restarted   IV
    antibiotics in April 2010. He stopped again in June 2010, when his
    port became infected, and restarted in February 2011, when a new
    port was installed.
    During this time frame, Dutkewych also applied for and
    received a premium waiver on his life insurance policy from
    Standard and total disability benefits from the Social Security
    Administration ("SSA").           On April 28, 2009, Standard approved
    Dutkewych for a premium waiver on his life insurance policy based
    on a disability.     On June 10, 2010, the SSA approved Dutkewych for
    total disability benefits due to "Lyme Disease, fibromyalgia,
    muscle/joint pain, depression and substance abuse."            The SSA found
    that Dutkwewych's "Lyme Disease with associated joint pain and
    fatigue as well as his depression preclude him from performing work
    at any exertional level of the occupational base on a 'regular and
    continuing basis.'"
    4.       Standard's Termination of LTD Benefits
    On April 27, 2011, Standard informed Dutkewych that his
    benefits would be terminated as of June 1, 2011,1 "due to the end
    of the 24-month Limitation Period."             Standard explained that,
    1
    The 24-month period was extended by 60 days under the terms
    of the Plan.
    -11-
    "[b]ecause the Group Policy limits payments for Disability caused
    or contributed to by a Mental Disorder, in order to continue to
    receive LTD Benefits, Mr. Dutkewych must be Disabled by a Physical
    Disease or Injury."      Specifically, "[t]he Physical Disease(s) or
    Injury(ies) must be so severe as to cause Disability in the absence
    of Substance Abuse, a Mental Disorder or Other Limited Condition."
    Standard relied on a physician consultant, Dr. Leonard
    Sigal, described as "board-certified in internal medicine and
    rheumatology" and "a leading figure in both the treatment and
    research of chronic Lyme disease for many years,"2 to review
    Dutkewych's "entire medical record."          Dr. Sigal concluded that
    Dutkewych's diagnosis of Lyme disease was "speculative."           He noted
    that Dutkewych's antecedent psychiatric disorder, substance abuse,
    and   diagnosis   of   fibromyalgia   had   been   "overshadowed    by   his
    treating physicians in favor of the premise that all of his
    complaints [were] attributable to 'chronic Lyme disease.'"
    In so concluding, Dr. Sigal discounted the positive
    Western blot results at the IGeneX laboratory since, in his
    experience, the laboratory "routinely reports positive results that
    are not in agreement with clinical findings and . . . often reports
    positive results in patients with no likelihood of exposure."            He
    2
    Dutkewych argues that Dr. Sigal's "experience has been
    confined to the position that chronic Lyme disease does not exist
    and that individuals who are diagnosed with chronic Lyme disease
    more likely than not suffer from fibromyalgia or mental illness."
    -12-
    also disagreed with Dr. Isselbacher's reading of the spinal fluid
    analysis.      "He noted that spinal fluid obtained on July 17, 2009
    had   normal     glucose,   a   trivially   elevated   protein,   and   no
    inflammatory white or red blood cells counted."        He concluded that
    it was "essentially normal."        Dr. Sigal accordingly rejected the
    diagnosis of chronic Lyme disease by "a small group of physicians,
    considered local or regional Lyme disease experts . . . despite the
    lack of explicit clinical and laboratory evidence and the lack of
    response    to     month    after   month    of   multiple    antibiotic
    therapies . . . ."
    In the termination letter, Standard stated that it could
    not "conclude that a Physical Disease has been identified as
    defined by the policy." Furthermore, "[e]ven if [it was] to accept
    the diagnosis of Lyme disease, the consulting physician noted that
    the claimant may be able to work at this time if his psychiatric
    issues were appropriately dealt with."            Importantly, Standard
    explained that it was "unable to conclude that Mr. Dutkewych
    remains Disabled as the result of a Physical Disease or Injury and
    since LTD Benefits payable for Disability caused or contributed to
    by Substance Abuse, a Mental Disorder or Other Limited Conditions
    are limited to 24 months, his claim will close with [Standard's]
    payment through June 1, 2011."
    Standard explained that Dutkewych could request a review
    of Standard's decision within 180 days.           With his request for
    -13-
    review,    Dutkewych     would    have    the   right    to   submit    additional
    information in support of his claim.
    5.         Dutkewych's Request for Review
    On October 20, 2011, Dutkewych administratively appealed
    Standard's decision to limit his benefits to two years.                         He
    attached letters from his wife, his in-laws, two of his brothers,
    and two of his treating physicians.
    Each   of     his    family     members      explained     Dutkewych's
    struggles with Lyme disease over the past few years.                   His mother-
    in-law stated that "Mark's limitations are both physical and
    intellectual."         She wrote that "his depression                is clearly a
    reaction    to   his    pain    and   fatigue    rather    than   an   endogenous
    depression."       His    brother     attested    that    Dutkewych     had   "gone
    thr[ough] significant physical and mental changes over the past 2
    years." As an example, his father-in-law related that "Mark cannot
    read a simple novel without getting confused and . . . need[ing] to
    re-read the pages that he just read five minutes earlier."
    Dr. Sheila Statlender, a clinical psychologist who had
    been treating Dutkewych since March 2010, submitted a report dated
    March 28, 2011.         Dr. Statlender stated that Dutkewych "has not
    abused substances" since they began treatment.                Significantly, she
    diagnosed him with "Mood Disorder Due to Neuroborreliosis (central
    nervous system Lyme disease), with Depressive Features" and noted
    his "ongoing symptoms of anxiety and depression."
    -14-
    Similarly, Dr. Ruiz's letter, dated August 21, 2011,
    found Dutkewych to have mental disorders, and attributed them to
    his diagnosis of Lyme disease.               Amongst Dutkewych's persistent
    symptoms, Dr. Ruiz listed cognitive limitations, depression, and
    anxiety. But, Dr. Ruiz wrote that "[d]epression and anxiety cannot
    explain   Mr.     Dutkewych's       joint        and    muscle     pain,       headaches,
    neuropathy, lack of endurance and worsening fatigue upon exercise.
    These symptoms, and Mr. Dutkewych's clinical presentation, are
    consistent with Lyme disease."
    Dutkewych sent Standard an additional report from a
    neuropsychologist, Dr. Leo Shea, following evaluations on May 21,
    2011, and June 4, 2011.                 Dr. Shea concluded that Dutkewych's
    "significant decline" in cognitive capacities "cannot be explained
    by   depression       alone."      He    concluded      that     "the       cause    of   Mr.
    Dutkewych's     cognitive       difficulties       is    primarily          based    in    the
    resultant neurologic sequelae of Lyme disease with central nervous
    system involvement."           Dr. Shea noted that Dutkewych's "cognitive
    reserve   has     also     been    impacted       by    his      history       of    serial
    concussions,      .    .   .    obsessive    compulsive        diagnosis,           and   the
    medications prescribed to attenuate these diagnosed conditions."
    In     addition,       Standard       had    received        a    letter       from
    Dutkewych, dated April 27, 2011, that summarized his own medical
    condition.      "Since first contracting Lyme Disease," Dutkewych
    wrote, "my symptoms have clustered in four primary areas: extreme
    -15-
    fatigue and lethargy, intense joint pain, cognitive issues and
    depression/anxiety. To date all of these issues persist." "Of all
    of the symptom areas," Dutkewych identified the cognitive issues as
    "often the most troubling."                Although he used to handle complex
    public bond financing at the law firm, he wrote that he was now
    forgetful,         easily       overwhelmed,       and   struggled    with     reading
    comprehension.        "Finally, despite working with my therapist weekly
    and taking anti-depressant medication, depression and anxiety
    continue to be an issue." Dutkewych noted that "[i]t is consistent
    with Lyme Disease to have mental health issues that are rooted in
    the illness."
    6.       Standard's Denial After Administrative Review
    Based on Dutkewych's request, Standard's Administrative
    Review Unit reviewed Standard's decision to terminate Dutkewych's
    LTD benefits after 24 months.                    As part of this process, the
    Administrative Review Unit asked two independent physicians, who
    had    not    been    involved        in   the     earlier    decision,   to    review
    Dutkewych's medical file.             Specifically, the Administrative Review
    Unit       asked     Dr.        Raymond    Dattwyler,3       an   immunologist    and
    rheumatologist,            to    comment    on     the   laboratory    findings    in
    Dutkewych's medical file, the CDC criteria, and the assessment of
    3
    Dutkewych notes that, "[l]ike Dr. Sigal, Dr. Dattwyler has
    a long history with Lyme disease, as a member of the [Infection
    Disease Society of America] and an outspoken voice against the
    existence of chronic Lyme."
    -16-
    Dutkewych's condition.      The Administrative Review Unit also asked
    Dr.   Bob   Gant,   a    clinical   neuropsychologist,    to    review   the
    information related to Dutkewych's claimed cognitive deficits, and
    the findings of Dr. Shea.
    In a report dated March 12, 2012, Dr. Dattwyler concluded
    that "Dutkewych simply did not have the clinical manifestations
    that I would expect to see in a patient with Lyme disease."
    Critically to Dr. Dattwyler, "Dutkewych's Lyme serologies are
    negative    and   none   meet   the    CDC   criteria."    Dr.    Dattwyler
    specifically rejected "any test results from a lab that does not
    adhere to CDC guidelines," such as the IGeneX tests.               "Simply
    stated his negative serologies and his clinical picture strongly
    support the finding that Mr. Dutkewych does not have Lyme disease
    now and never did."
    In a report dated April 5, 2012, Dr. Gant stated that he
    was "unable to establish a psychological or neuropsychological
    diagnosis with the available information."           "In my opinion," Dr.
    Gant wrote in an addendum report issued on April 20, "Dr. Shea
    administered an insufficiently brief examination to support his
    conclusions regarding a diagnosis of Chronic Lyme Disease, work-
    related limitations related to this disease, and his ultimate
    conclusions   regarding     impaired     work   functioning."     Dr.    Gant
    -17-
    recommended        a     comprehensive    and    forensically      sophisticated
    neuropsychological examination to verify a definitive diagnosis.4
    Both consulting physicians questioned the existence of
    chronic Lyme disease as a diagnosis in general. In his report, Dr.
    Dattwyler cautioned that "there is no acceptable definition of
    'chronic Lyme disease,'" and that "[i]t is not accepted as a
    diagnosis by mainstream medicine."              Instead, "[t]he term 'chronic
    Lyme disease' is being applied to patients with vague complaints
    most       of   who[m]    have   never   had    Lyme   disease."      Dr.   Gant
    "concur[red]" with Dr. Dattwyler's statement that chronic Lyme
    disease is not accepted by mainstream medicine.                 "In fact," Dr.
    Gant wrote in his report, "available medical information indicates
    that there is not medical consensus that Lyme disease is a credible
    diagnosis to offer an individual with this claimant's clinical
    history."
    On May 4, 2012, the Administrative Review Unit issued a
    letter to Dutkewych's counsel to inform her that it had completed
    4
    In the review letter, the Administrative Review Unit noted
    that it had contacted Dutkewych's counsel and "offered to arrange
    for a neuropyschological examination at The Standard's expense"
    after receiving Dr. Gant's assessment. The Administrative Review
    Unit and Dutkewych's counsel had discussed that the results would
    not likely change the prior determination "because The Standard did
    not find that a diagnosis of Lyme disease was supported in Mr.
    Dutkewych's case and because all of the other possible causes of
    impairment that were suggested by Dr. Gant related to psychiatric
    disorders or the treatment [Dutkewych] received for his psychiatric
    disorders." "Given the above," Dutkewych's counsel declined to
    pursue the evaluation.
    -18-
    its independent review.        The Administrative Review Unit found that
    "the correct decision was to close [Dutkewych's] claim as [of] June
    1, 2011 under the Disabilities Subject to Limited Pay Periods
    Provision" of his Plan.
    In the review letter, the Administrative Review Unit
    reiterated that "the Disabilities Subject to Limited Pay Periods
    provision of the [Plan] limits payment of LTD Benefits to 24 months
    during your entire life time for a Disability caused or contributed
    to by any one or more of the following . . . : 1) Mental Disorders,
    2)   Substance   Abuse,       or   3)   Other   Limited      Conditions."      The
    Administrative Review Unit then summarized, in detail, Dutkewych's
    medical history, the evidence that he had submitted in support of
    his claim that he was disabled as a result of Lyme disease, and the
    reports of Standard's consulting physicians.                   In addition, the
    Administrative Review Unit noted the controversy within the medical
    community "regarding the diagnosis and treatment of Lyme disease."
    The Administrative Review Unit concluded that "it is entirely
    reasonable    and,    in   fact,      prudent   that   The    Standard   evaluate
    disability claims in the context of mainstream medical opinion."
    Relying on the assessments of Drs. Dattwyler and Gant,
    and the consistent assessments of Drs. Sigal and Goldenberg, the
    Administrative       Review    Unit     concluded   that     Dutkewych   was   not
    disabled "as a result [of] Lyme disease."               "Rather,"    it stated,
    "the available medical evidence supports that [Dutkewych]'s mental
    -19-
    health conditions in combination with his chronic pain condition
    (fibromyalgia) and substance abuse are the most likely cause of his
    reported symptoms."       The Administrative Review Unit agreed with
    Standard's earlier decision to limit Dutkewych's benefits to 24
    months under the Limited Conditions Provision as a result.              The
    Administrative Review Unit explained:
    Because we do not find evidence to support
    that   Mr.   Dutkewych   was   impaired   from
    performing his Own Occupation as of June 1,
    2011 by a physical disease or injury (which
    was independent from his mental disorders,
    substance abuse and fibromyalgia with possible
    chronic fatigue), we have determined that Mr.
    Dutkewych does not qualify for additional LTD
    benefits from The Standard, and that his claim
    must remain closed.
    C.         Present Litigation
    Following Standard's decision to terminate LTD benefits
    after 24 months, Dutkewych sought review in the District of
    Massachusetts.    In his First Amended Complaint, filed on September
    27, 2012, he asserted that, "[a]t the end of the two year limited
    pay period for disabilities caused or contributed to by a Mental
    Disorder, Mr. Dutkewych was disabled due to the symptoms of Lyme
    disease,   a   Physical   Disease    under   the   terms   of   the   Plan."
    Dutkewych sought enforcement of the terms of the Plan for unpaid
    benefits, and attorneys' fees and costs.           Both parties moved for
    summary judgment.
    The district court held that Standard did not abuse its
    discretion when it concluded that Dutkewych was not disabled by
    -20-
    Lyme   disease,   and   terminated    his   benefits    after   24   months.
    Dutkewych, 
    2014 WL 1334169
    , at *10-12.          "[W]hile there is evidence
    in the record supporting a diagnosis of Lyme disease or chronic
    Lyme disease," the court stated, "there is still substantial
    evidence in the record supporting otherwise, upon which Standard
    relied in making its determination that Dutkewych was not disabled
    by Lyme disease."       
    Id. at *9
    .     In reaching its conclusion, the
    court noted the qualified consulting physicians' opinions as to
    Dutkewych's diagnosis with chronic Lyme disease, 
    id. at *10-11
    , as
    well as the "substantial evidence . . . that Dutkewych suffered
    from non-physical impairments, such as depression," 
    id. at *12
    . As
    a result, the district court granted Standard's motion for summary
    judgment and denied Dutkewych's motion for summary judgment.            
    Id. at *14
    .    This appeal followed.
    II.     Analysis
    We review the district court's grant of summary judgment
    de novo.    Cusson v. Liberty Life Assurance Co. of Bos., 
    592 F.3d 215
    , 223 (1st Cir. 2010).          Although Dutkewych assigns various
    errors to the district court's decision, "we need not attend
    separately to each of these arguments."            Fire & Police Pension
    Ass'n of Colo. v. Simon, 
    2015 WL 500748
    , at *10 (1st Cir. Feb. 6,
    2015).    It is sufficient to affirm if we reach the same conclusion
    on any basis.     See 
    id.
    -21-
    Like   the   district    court,   our   review      of    Standard's
    decision is deferential.5               See Dutkewych, 
    2014 WL 1334169
    , at *1
    n.1. "Where, as here, the administrator of an ERISA plan is imbued
    with discretion in the interpretation and application of plan
    provisions, its use of that discretion must be accorded deference."
    Colby v. Union Sec. Ins. Co. & Mgmt. Co. for Merrimack Anesthesia
    Assocs. Long Term Disability Plan, 
    705 F.3d 58
    , 61 (1st Cir. 2013).
    A reviewing court must uphold Standard's decision unless it is
    "arbitrary, capricious, or an abuse of discretion."6                           Ortega-
    Candelaria v. Johnson & Johnson, 
    755 F.3d 13
    , 20 (1st Cir. 2014)
    (internal quotation marks and citation omitted).                            Under this
    standard of review, "the plan administrator's determinations must
    be 'reasoned and supported by substantial evidence.'                         In short,
    they       must    be    reasonable."      Colby,   705   F.3d   at    62    (citation
    omitted).
    5
    The conflict of interest in Standard's position as both the
    claim administrator and the payer of benefits "does not alter the
    standard of review, but rather is 'but one factor among many that
    a reviewing judge must take into account.'" Ortega-Candelaria v.
    Johnson & Johnson, 
    755 F.3d 13
    , 27 (1st Cir. 2014) (quoting Metro.
    Life Ins. Co. v. Glenn, 
    554 U.S. 105
    , 116 (2008)).
    6
    We have previously noted that "'[f]or purposes of reviewing
    benefit determinations by an ERISA plan administrator, the
    arbitrary and capricious standard is functionally equivalent to the
    abuse of discretion standard.'" D & H Therapy Assocs., LLC v. Bos.
    Mut. Life Ins. Co., 
    640 F.3d 27
    , 34 n.5 (1st Cir. 2011) (quoting
    Wright v. R.R. Donnelley & Sons Grp. Benefits Plan, 
    402 F.3d 67
    , 74
    n.3 (1st Cir. 2005)).
    -22-
    Dutkewych argues that "the contemporaneous medical record
    demonstrates convincingly that [he] was disabled as a result of
    chronic Lyme disease in June 2011 and is entitled to benefits from
    that date, forward." Under the terms of the Plan, however, whether
    or not that argument is correct, "[p]ayment of LTD Benefits is
    limited to 24 months during your entire lifetime for a Disability
    caused or contributed to by . . . Mental Disorders."           We need not
    and do not decide whether chronic Lyme disease is a valid diagnosis
    in general, or as applied to Dutkewych specifically.               Even if
    Dutkewych was disabled as a result of chronic Lyme disease in June
    2011, Standard's decision to limit his benefits to 24 months based
    on the Mental Disorder Limitation was not arbitrary or capricious.
    Dutkewych raises three objections to the application of
    the Mental Disorder Limitation in his case.             First, Dutkewych
    argues that the record lacks substantial evidence that a mental
    disorder caused or contributed to his disability in June 2011, when
    his   benefits   were   terminated.      Next,    Dutkewych    argues   that
    Standard's     application   of   the    Mental     Disorder    Limitation
    contradicts the "Rules for Disabilities Subject to Limited Pay
    Periods" set forth in the Plan.         Finally, Dutkewych argues that
    Standard's reliance on the Mental Disorder Limitation arose only in
    litigation and should be disregarded as a post-hoc rationalization.
    We address and reject each argument in turn.
    -23-
    A.         Substantial Evidence for Limitation
    The   Mental   Disorder   Limitation   applies    if    "Mental
    Disorders" "cause[] or contribute[] to" the claimant's disability.
    "Mental Disorder," in turn, is defined as:
    [A]ny    mental,    emotional,     behavioral,
    psychological, personality, cognitive, mood or
    stress-related     abnormality,      disorder,
    disturbance,    dysfunction    or    syndrome,
    regardless of cause . . . or the presence of
    physical symptoms.
    In this case, there is substantial evidence that Dutkewych's mental
    illness,   whether   or   not   related   to   chronic   Lyme     disease,
    contributed to his disability as of June 2011.7             The contrary
    argument is flatly contradicted by his own admissions and the
    numerous medical opinions from both his own and other doctors.
    Reports   from   Dutkewych's    own    treating      physicians
    establish that he had ongoing mental disabilities, in addition to
    his physical symptoms, as of the period around June 2011.            In a
    report dated March 28, 2011, Dr. Statlender stated that Dutkewych
    "continues to experience a range of both physical and emotional
    7
    The parties dispute whether it is Standard's burden to
    prove that Dutkewych was subject to the limited pay period, or
    Dutkewych's burden to prove that he was not. Under traditional
    insurance law principles, "once an insured has met [his] initial
    burden of proving that a claim falls within the grant of coverage,
    the burden shifts to the insurer to show that an exclusion defeats
    coverage." Gent v. CUNA Mut. Ins. Soc'y, 
    611 F.3d 79
    , 83 (1st Cir.
    2010). We noted the difficulty of characterizing a similar mental
    illness provision as an exclusion or as a limitation on the
    continuation of benefits in Gent. 
    Id.
     Here, as in Gent, we need
    not decide how to allocate the burden of proof since Standard would
    prevail regardless. See 
    id.
    -24-
    symptoms," including "ongoing symptoms of anxiety and depression,"
    and diagnosed him with "Mood Disorder Due to Neuroborreliosis
    (central nervous system Lyme disease), with Depressive Features."
    Likewise, in a report dated August 21, 2011, Dr. Ruiz listed
    cognitive limitations, depression, and anxiety amongst "Dutkewych's
    persistent       symptoms."         Finally,        in      Dutkewych's      2011
    neuropsychological evaluation, Dr. Shea wrote that Dutkewych's
    "presenting symptoms" included cognitive limitations, "anxiety and
    depression that impacts his mood," and "severe fatigue."                  Testing
    revealed      that   "Dutkewych   suffers    from    significant       cognitive
    deficits, which are consistent with neurological Lyme disease that
    has gone untreated for a prolonged period of time, and which
    significantly impacts his professional career and has restricted
    his ability to continue working at his designated position."
    In addition, Dutkewych's own letter to Standard on April
    27, 2011, highlighted the mental disorders with which he struggled.
    He stated that his symptoms fell into "four primary areas: extreme
    fatigue and lethargy, intense joint pain, cognitive issues and
    depression/anxiety."        "To date all of these issues persist."           "Of
    all of the symptom areas," Dutkewych wrote, "the cognitive issues
    are   often    the   most   troubling   to   me."        Like   his   physicians,
    Dutkewych ascribed his physical symptoms, cognitive issues, and
    mental health issues to Lyme disease.
    -25-
    Dutkewych maintains that these "symptoms" of chronic Lyme
    disease cannot form the basis for the Mental Disorder Limitation.
    He argues that "[e]xperiencing depression derivative of a physical
    condition and being disabled by a psychiatric disorder are two very
    different animals."        He stresses that his treating physicians did
    not attribute his disability to his psychiatric conditions in June
    2011.
    The Mental Disorder Limitation, however, is broadly
    written.     The Limitation applies if a mental disorder, regardless
    of    its   own   cause,   "caused    or   contributed"       to    a   claimant's
    disability.       It is clear from Dutkewych's own evidence that mental
    disorders, regardless of cause, continue to contribute to his
    disability.       This is sufficient to trigger the Mental Disorder
    Limitation based on the facts of this case and the wording of this
    Plan.
    In Schwob v. Standard Insurance Co., 
    248 F. App'x 22
    (10th Cir. 2007), the Tenth Circuit reached the same conclusion
    when faced with an almost identical limitation.                    "At best," the
    claimant's evidence indicated that "a mental disorder, such as
    depression, could be secondary to Lyme disease, which she may or
    may not have."      
    Id. at 28
    .   The Tenth Circuit concluded that, even
    so,   Standard     was   reasonable   in     applying   the    Mental     Disorder
    Limitation.       
    Id. at 29
    .   The court explained:
    [E]ven if we accept the premise that [the
    claimant]'s mental disorder is secondary to a
    -26-
    physical illness, this would not prevent
    Standard from applying the mental-disorder
    limitation to her claim.          The Plan's
    definition of mental disorder includes mental
    disorders 'regardless of cause.' As long as
    [the claimant]'s mental disorder contributed
    to her disability, the limitation would apply
    even if the mental disorder resulted from Lyme
    disease or another physical disease.
    
    Id.
       The same logic applies to the case at hand.
    B.         Rules for Applying Limitation
    Dutkewych attempts to limit the application of the Mental
    Disorder Limitation by pointing to the "unique, explicit rules for
    the application of the Mental Disorders, Substance Abuse and Other
    Limited Conditions provision."      The Limited Conditions Provision
    limits payment of LTD benefits to "24 months during your entire
    lifetime for a Disability caused or contributed to by . . . : (1)
    Mental   Disorders;   (2)   Substance    Abuse;   or   (3)   Other   Limited
    Conditions."    The "Rules" for the application of the Limited
    Conditions Provision state:
    1.   If you are Disabled as a result of a
    Mental Disorder or any Physical Disease or
    Injury for which payment of LTD Benefits is
    subject to a limited pay period, and at the
    same time are Disabled as a result of a
    Physical Disease, Injury, or Pregnancy that is
    not subject to such limitation, LTD Benefits
    will be payable first for conditions that are
    subject to the limitation.
    2. No LTD Benefits will be payable after the
    end of the limited pay period, unless on that
    date you continue to be Disabled as a result
    of a Physical Disease, Injury, or Pregnancy
    for which payment of LTD Benefits is not
    limited.
    -27-
    Dutkewych argues that the Rules envision payment of
    benefits after two years even if physical non-limited conditions
    exist contemporaneously with limited conditions. Under Dutkewych's
    reading of Rule One, benefits must be paid first for a limited
    condition, "even if a physical disability coexists." Rule Two then
    requires the insurer to continue paying benefits after the limited
    pay period if the physical disability continues at that point.          He
    argues that "[t]his is irrespective of the fact that the physically
    disabling   condition   may   have   caused   (or   continue   to    cause)
    disabling mental illness, as defined under the Plan, as benefits
    have already been paid out for the mental illness aspect of the
    disability."     In   essence,   Dutkewych    argues    that   the   Mental
    Disability Limitation ceases to apply after the first two years of
    benefits by operation of the Rules.
    Standard maintains that the Mental Disability Limitation
    continues to apply after two years if a physical non-limited
    condition co-exists with a limited condition.          In other words, if
    a claimant is disabled as a result of mental illness and physical
    disease, Rule One requires benefits to be paid for conditions that
    are subject to the limitation first.      Rule Two allows benefits to
    continue only if the claimant continues to be disabled by a
    physical disease at the end of the limited pay period.           However,
    the general limitation still applies at the conclusion of the 24-
    month period.    The interaction of the general limitation and Rule
    -28-
    Two means that a claimant can receive benefits after the limited
    pay period only if he continues to be disabled due to a physical
    disease separate from any limited condition.
    We emphasize again our deferential review in this case.
    The Plan allows Standard "to interpret the Group Policy and resolve
    all questions arising in the . . . interpretation . . . of the
    Group       Policy."       Accordingly,      "the      plan   administrator's
    interpretation of the plan 'will not be disturbed if reasonable.'"8
    Conkright v. Frommert, 
    559 U.S. 506
    , 521 (2010) (citation omitted).
    Standard's interpretation of the Mental Disability Limitation and
    the Rules governing its application is "by no means unreasonable
    and so must prevail."          See Wallace v. Johnson & Johnson, 
    585 F.3d 11
    , 15 (1st Cir. 2009).
    Other    words   of   the   general    limitation   support   the
    reasonableness of Standard's interpretation.             The Plan states that
    "[p]ayment of LTD Benefits is limited to 24 months during your
    entire lifetime for a Disability caused or contributed to by . . .
    Mental Disorders."        (Emphasis added.)         Dutkewych's argument that
    the Mental Disability Limitation ceases to operate after those 24
    months is unpersuasive, particularly when the Rules say no such
    thing.      Rule Two states that benefits will not be paid after the
    8
    Neither the Supreme Court nor this court has "spoken
    directly to how courts should assess whether an administrator's
    construction of a plan term is so unreasonable as to constitute an
    abuse of discretion." D & H Therapy Assocs., 
    640 F.3d at 36
    . We
    need offer no further elucidation in this case.
    -29-
    limited pay period unless the claimant has a non-limited physical
    disease, injury, or pregnancy at that time.               This does not compel
    the opposite conclusion that benefits will be paid after the
    limited pay period even if the claimant continues to suffer from a
    limited mental disability.
    Standard's reading of the Rules is further supported by
    its consistency with another provision in the Plan. Elsewhere, the
    Plan states:
    If a period of Disability is extended by a new
    cause while LTD Benefits are payable, LTD
    Benefits will continue while you remain
    Disabled.   However . . . [t]he Disabilities
    Excluded From Coverage, Disabilities Subject
    To Limited Pay Periods, and Limitations
    sections will apply to the new cause of
    Disability.
    In effect, Dutkewych is asking to extend his period of payments for
    disability beyond 24 months due to a physical disease instead of
    limited conditions. The Plan explicitly specifies that the Limited
    Conditions        Provision,    and     the    subsumed    Mental    Disability
    Limitation, will continue to apply.
    C.           Post-Hoc Rationalization
    As    a   final   salvo,   Dutkewych   mistakenly      argues   that
    Standard's broad interpretation of the Mental Disability Limitation
    "was never raised during the internal appeals process and stands in
    direct contradiction to Standard's interpretation of the provision
    at that time." Dutkewych urges us to "reject [Standard's] analysis
    as a post-hoc rationalization undeserving of deference" under our
    -30-
    logic in Glista v. Unum Life Insurance Co. of America, 
    378 F.3d 113
    (1st Cir. 2004).
    In Glista, we held an insurer to its explanation for
    denying benefits articulated during its internal claims review
    process.    
    378 F.3d at 132
    .     There, the insurer had raised two bases
    for its denial of relief in litigation -- the Treatment Clause and
    the Symptoms Clause.          
    Id. at 126
    .          Our review of the record
    revealed that the insurer had never relied on the Symptoms Clause
    during    its    internal    review     process,    and    that   "a   reasonable
    participant would have understood the denial to rest on the
    Treatment Clause alone."          
    Id. at 129
    .           We held that reviewing
    courts have "a range of options available" in such circumstances.
    
    Id. at 116
    .      In that case, we barred the insurer's argument on the
    Symptoms Clause as a post-hoc rationalization.                
    Id. at 128, 131
    .
    According to Dutkewych, the same result is warranted
    here.    Dutkewych contends that, "[p]rior to litigation, Standard's
    sole defense was that chronic Lyme does not exist as a disease."
    Moreover, "[t]he only inquiry during the internal appeals process
    was the cause of Mr. Dutkewych's disabling symptoms, and not
    whether    a     limited    condition     caused    or     contributed   to   his
    disability; in fact, this analysis was never once cited by Standard
    during     its    review."      This     claim     is     contradicted   by   the
    administrative record.
    -31-
    Standard has repeatedly stressed that Dutkewych's Plan
    "limits   payment    of   LTD    Benefits   to    24     months   during   [the
    claimant]'s entire lifetime for a Disability caused or contributed
    to   by   Mental    Disorders,    Substance      Abuse    or   Other   Limited
    Conditions."     In both its April 26, 2011, termination letter, and
    its May 4, 2012, review letter, Standard explicitly premised its
    decision on the Limited Conditions Provision.
    In its original termination letter to Dutkewych, Standard
    clearly explained the operation of the Limited Conditions Provision
    and its reliance on the same.           Standard wrote in the opening
    paragraph:
    Because the [Plan] limits payments for
    Disability caused or contributed to by a
    Mental Disorder, in order to continue to
    receive LTD Benefits, Mr. [Dutkewych] must be
    Disabled by a Physical Disease or Injury. The
    Physical Disease(s) or Injury(ies) must be so
    severe as to cause Disability in the absence
    of Substance Abuse, a Mental Disorder or Other
    Limited Condition.
    (Emphasis added).     In its analysis, Standard rejected Dutkeywch's
    diagnosis of Lyme disease, but identified mental disorders as an
    alternative basis for rejection of his disability claim in any
    case:
    Based on the information in the claim file, we
    cannot conclude that a Physical Disease has
    been identified as defined by the policy.
    Even if we were to accept the diagnosis of
    Lyme disease, the consulting physician noted
    that the claimant may be able to work at this
    -32-
    time   if   his   psychiatric      issues   were
    appropriately dealt with.
    Because Standard concluded that Dutkewych was not disabled as a
    result of a physical disease, and because LTD Benefits are limited
    for a "Disability caused or contributed to by" limited conditions,
    Standard closed his claim on June 1, 2011.
    In its subsequent review letter, Standard again rejected
    Dutkewych's claim that he was disabled as a result of Lyme disease
    and stressed the evidence of limited conditions in the record.
    Standard wrote:
    Based on a comprehensive review of all of the
    information in Mr. Dutkewych's claim file, we
    find that the available evidence does not
    support that Mr. Dutkewych has been precluded
    from performing his Own Occupation as a result
    [of] Lyme disease.      Rather the available
    medical evidence supports that your client's
    mental health conditions in combination with
    his chronic pain condition (fibromyalgia) and
    substance abuse are the most likely cause of
    his reported symptoms.
    That Standard's language suggested that limited conditions caused,
    rather than merely contributed to, Dutkewych's disability is of no
    moment since its reliance on the Limited Conditions Provision is
    unassailable.   In the very next sentence, Standard reiterated the
    application of the Limited Conditions Provision to Dutkewych's
    case:
    Because we do not find evidence to support
    that   Mr.  Dutkewych   was  impaired  from
    performing his Own Occupation as of June 1,
    2011 by a physical disease or injury (which
    was independent from his mental disorders,
    -33-
    substance abuse and fibromyalgia with possible
    chronic fatigue), we have determined that Mr.
    Dutkewych does not qualify for additional LTD
    benefits from The Standard, and that his claim
    must remain closed.
    (Emphasis added).
    Standard's reliance on and interpretation of the Limited
    Conditions Provision took place before there was any litigation and
    Dutkewych had adequate notice during the administrative process.
    Indeed,     when     Standard      offered        to       pursue    additional
    neuropsychological     testing    during      the      administrative    review
    process, Dutkewych's counsel refused specifically because the
    results of such testing would support the already-imposed Limited
    Conditions Provision, "and, thus, would not change the prior
    determination on Mr. Dutkewych's claim."               This case is a far cry
    from Glista, in which the insurer articulated an entirely new basis
    for the denial of benefits for the first time in litigation.               See
    
    378 F.3d at 129
    .
    III.        Conclusion
    We conclude that Standard's limitation of Dutkewych's
    benefits to 24 months was not arbitrary or capricious given the
    substantial    evidence   in     the     record     that    mental   disorders,
    regardless of their cause, contributed to his disability as of June
    1, 2011.     We affirm the grant of summary judgment in favor of
    Standard.
    So ordered.
    -34-