Kisor v. Shulkin , 869 F.3d 1360 ( 2017 )


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  •   United States Court of Appeals
    for the Federal Circuit
    ______________________
    JAMES L. KISOR,
    Claimant-Appellant
    v.
    DAVID J. SHULKIN, SECRETARY OF VETERANS
    AFFAIRS,
    Respondent-Appellee
    ______________________
    2016-1929
    ______________________
    Appeal from the United States Court of Appeals for
    Veterans Claims in No. 14-2811, Judge Alan G. Lance, Sr.
    ______________________
    Decided: September 7, 2017
    ______________________
    KENNETH M. CARPENTER, Law Offices of Carpenter
    Chartered, Topeka, KS, argued for claimant-appellant.
    IGOR HELMAN, Commercial Litigation Branch, Civil
    Division, United States Department of Justice, Washing-
    ton, DC, argued for respondent-appellee. Also represent-
    ed by BENJAMIN C. MIZER, ROBERT E. KIRSCHMAN, JR.,
    MARTIN F. HOCKEY, JR.; Y. KEN LEE, SAMANTHA ANN
    SYVERSON, United States Department of Veterans Affairs,
    Washington, DC.
    ______________________
    2                                          KISOR   v. SHULKIN
    Before REYNA, SCHALL, and WALLACH, Circuit Judges.
    SCHALL, Circuit Judge.
    James L. Kisor, a veteran, appeals the January 27,
    2016 decision of the United States Court of Appeals for
    Veterans Claims (“Veterans Court”) in Kisor v. McDonald,
    No. 14-2811, 
    2016 WL 337517
    (Vet. App. Jan. 27, 2016).
    In that decision, the Veterans Court affirmed the April
    29, 2014 decision of the Board of Veterans’ Appeals
    (“Board”) denying Mr. Kisor entitlement to an effective
    date earlier than June 5, 2006, for the grant of service
    connection for his post-traumatic stress disorder
    (“PTSD”). Kisor, 
    2016 WL 337517
    , at *1. We affirm.
    BACKGROUND
    I.
    The pertinent facts are as follows: Mr. Kisor served
    on active duty in the Marine Corps from 1962 to 1966. 
    Id. In December
    of 1982, he filed an initial claim for disabil-
    ity compensation benefits for PTSD with the Department
    of Veterans Affairs (“VA”) Regional Office (“RO”) in Port-
    land, Oregon. 
    Id. Subsequently, in
    connection with that
    claim, the RO received a February 1983 letter from David
    E. Collier, a counselor at the Portland Vet Center.
    J.A. 17. In his letter, Mr. Collier stated: “[I]nvolvement
    in group and individual counseling identified . . . concerns
    that Mr. Kisor had towards depression, suicidal thoughts,
    and social withdraw[a]l. This symptomatic pattern has
    been associated with the diagnosis of Post-Traumatic
    Stress Disorder (DSM III 309.81).” 
    Id. In March
    of 1983, the RO obtained a psychiatric ex-
    amination for Mr. Kisor. In his report, the examiner
    noted that Mr. Kisor had served in Vietnam; that he had
    KISOR   v. SHULKIN                                          3
    participated in “Operation Harvest Moon” 1; that he was
    on a search operation when his company came under
    attack; that he reported several contacts with snipers and
    occasional mortar rounds fired into his base of operation;
    and that he “was involved in one major ambush which
    resulted in 13 deaths in a large company.” J.A. 19–20.
    The examiner did not diagnose Mr. Kisor as suffering
    from PTSD, however. Rather, it was the examiner’s
    “distinct impression” that Mr. Kisor suffered from “a
    personality disorder as opposed to PTSD.” J.A. 21. The
    examiner diagnosed Mr. Kisor with intermittent explosive
    disorder and atypical personality disorder. 
    Id. Such conditions
    cannot be a basis for service connection. See 38
    C.F.R. § 4.127. 2 Given the lack of a current diagnosis of
    PTSD, the RO denied Mr. Kisor’s claim in May of 1983.
    J.A. 23. The RO decision became final after Mr. Kisor
    initiated, but then failed to perfect, an appeal. Kisor,
    
    2016 WL 337517
    , at *1.
    II.
    On June 5, 2006, Mr. Kisor submitted a request to re-
    open his previously denied claim for service connection for
    PTSD. J.A. 25. While his request was pending, he pre-
    sented evidence to the RO. This evidence included a July
    20, 2007 report of a psychiatric evaluation diagnosing
    PTSD. See J.A. 100–11. It also included a copy of
    Mr. Kisor’s Department of Defense Form 214, a Combat
    1     Operation Harvest Moon was a military engage-
    ment against the Viet Cong during the Vietnam War.
    See, e.g., J.A. 20, 95, 101.
    2     Under § 4.127, “[i]ntellectual disability (intellec-
    tual developmental disorder) and personality disorders
    are not diseases or injuries for compensation purposes,
    and . . . disability resulting from them may not be service-
    connected.”
    4                                         KISOR   v. SHULKIN
    History, Expeditions, and Awards Record documenting
    his participation in Operation Harvest Moon, and a copy
    of the February 1983 letter from the Portland Vet Center.
    See J.A. 16–17, 27–28. In September of 2007, a VA exam-
    iner diagnosed Mr. Kisor with PTSD. J.A. 115. The RO
    subsequently made a Formal Finding of Information
    Required to Document the Claimed Stressor based on
    Mr. Kisor’s statements, his service medical records (which
    verified his service in Vietnam with the 2nd Battalion,
    7th Marines), and a daily log from his unit, which detailed
    the combat events Mr. Kisor had described in connection
    with his claim. J.A. 30.
    In due course, the RO issued a rating decision reopen-
    ing Mr. Kisor’s previously denied claim. The decision
    granted Mr. Kisor service connection for PTSD and as-
    signed a 50 percent disability rating, effective June 5,
    2006. 3 Kisor, 
    2016 WL 337517
    , at *1. According to the
    3    Pursuant to 38 C.F.R. § 3.156(a), a claim may be
    reopened on the submission of “new and material” evi-
    dence. The regulation defines “new” evidence as “existing
    evidence not previously submitted to agency decisionmak-
    ers.” 38 C.F.R. § 3.156(a). It defines “material” evidence
    as “existing evidence that, by itself or when considered
    with previous evidence of record, relates to an unestab-
    lished fact necessary to substantiate the claim.” 
    Id. If a
    previously denied claim (such as Mr. Kisor’s PTSD claim)
    is later reopened and granted based on the submission of
    new and material evidence, the effective date of benefits
    is the date that the claimant filed the application to
    reopen or the date entitlement arose, whichever is later.
    See 38 U.S.C. § 5110(a); 38 C.F.R. § 3.400(q)(2). In this
    case, under the new and material evidence approach, the
    effective date for benefits would be June 5, 2006—the
    date of Mr. Kisor’s request to reopen his claim. J.A. 25.
    KISOR   v. SHULKIN                                        5
    decision, the rating was based upon evidence that includ-
    ed the July 2007 psychiatric evaluation report diagnosing
    PTSD, the September 2007 VA examination, and the
    Formal Finding of Information Required to Document the
    Claimed Stressor. J.A. 32–33. The RO explained that
    service connection was warranted because the VA exami-
    nation showed that Mr. Kisor was diagnosed with PTSD
    due to experiences that occurred in Vietnam and because
    the record showed that he was “a combat veteran (Combat
    Action Ribbon recipient).” J.A. 33.
    In November of 2007, Mr. Kisor filed a Notice of Disa-
    greement. In it, he challenged both the 50 percent disa-
    bility rating and the effective date assigned by the RO.
    Kisor, 
    2016 WL 337517
    , at *1. Subsequently, in March of
    2009, the RO issued a decision increasing Mr. Kisor’s
    schedular rating to 70 percent. In addition, the RO
    granted a 100 percent rating on an extraschedular basis,
    effective June 5, 2006. 4 J.A. 41–45. In January of 2010,
    the RO issued a Statement of the Case denying entitle-
    ment to an earlier effective date for the grant of service
    connection for PTSD. See J.A. 53–65.
    4    The VA evaluates a veteran’s disability level by
    using diagnostic codes in the rating schedule of title 38 of
    the Code of Federal Regulations. See 38 C.F.R. § 3.321(a);
    see generally 38 C.F.R. §§ 4.40–4.150 (rating schedule).
    The evaluation reflects a veteran’s base, “schedular”
    rating. See Thun v. Peake, 
    22 Vet. App. 111
    , 114 (2008).
    In exceptional cases, where the schedular rating is inade-
    quate, the veteran is eligible for a higher, “extraschedu-
    lar” disability rating. See 38 C.F.R. § 3.321(b)(1); 
    Thun, 22 Vet. App. at 114
    –15.
    6                                           KISOR   v. SHULKIN
    III.
    Mr. Kisor appealed to the Board. Before the Board,
    he contended that he was entitled to an effective date
    earlier than June 5, 2006 for the grant of service connec-
    tion for PTSD. Specifically, he argued that the proper
    effective date for his claim was the date of his initial claim
    for disability compensation that was denied in May of
    1983. See J.A. 47–48. In support, Mr. Kisor alleged clear
    and unmistakable error (CUE) in the May 1983 rating
    decision; he also alleged various duty-to-assist failures on
    the part of the VA. See J.A. 47–48, 84–87.
    The Board rejected these arguments. It ruled that the
    duty to assist had not been violated, that Mr. Kisor had
    failed to establish CUE, and that the RO’s May 1983
    rating decision became final when Mr. Kisor failed to
    perfect his appeal of the decision. See J.A. 85–88. The
    Board found no reason to upset the finality of the May
    1983 decision because “[t]he remedy available to the
    Veteran was to appeal,” but he did not do so. J.A. 86.
    The Board, however, raised “another way to challenge
    the May 1983 rating decision” that had not been advanced
    by Mr. Kisor. J.A. 88. That way turned on whether
    Mr. Kisor was eligible for an earlier effective date for his
    service connection under the regulation set forth at 38
    C.F.R. § 3.156(c). In contrast to 38 C.F.R. § 3.156(a),
    which only permits claims to be reopened on the submis-
    sion of “new and material” evidence, § 3.156(c) allows
    claims to be reconsidered if certain conditions are met.
    See 38 C.F.R. § 3.156(c)(1) (noting that § 3.156(c) applies
    “notwithstanding paragraph (a)”).
    Subsection 3.156(c) includes two parts relevant to this
    appeal. First, paragraph (c)(1) defines the circumstances
    under which the VA must reconsider a veteran’s claim for
    benefits based on newly-associated service department
    records:
    KISOR   v. SHULKIN                                          7
    [A]t any time after VA issues a decision on a
    claim, if VA receives or associates with the claims
    file relevant official service department records
    that existed and had not been associated with the
    claims file when VA first decided the claim, VA
    will reconsider the claim . . . .
    38 C.F.R. § 3.156(c)(1). Second, paragraph (c)(3) estab-
    lishes the effective date for any benefits granted as a
    result of reconsideration under paragraph (c)(1):
    An award made based all or in part on the records
    identified by paragraph (c)(1) of this section is ef-
    fective on the date entitlement arose or the date
    the VA received the previously decided claim,
    whichever is later, . . . .
    38 C.F.R. § 3.156(c)(3).
    Section 3.156(c) thus provides for an effective date for
    claims that are reconsidered that is different from the
    effective date for claims that are reopened. As we pointed
    out in Blubaugh v. McDonald, “[i]n contrast to the general
    rule, § 3.156(c) requires the VA to reconsider a veteran’s
    claim when relevant service department records are
    newly associated with the veteran’s claims file, whether
    or not they are ‘new and material’ under § 3.156(a).” 
    773 F.3d 1310
    , 1313 (Fed. Cir. 2014) (citing New and Material
    Evidence, 70 Fed. Reg. 35,388, 35,388 (June 20, 2005)).
    “In other words,” we observed, “§ 3.156(c) serves to place a
    veteran in the position he would have been in had the VA
    considered the relevant service department record before
    the disposition of his earlier claim.” 
    Id. Applying the
    regulation, the Board considered wheth-
    er the material Mr. Kisor submitted in connection with
    his June 2006 request to reopen warranted reconsidera-
    8                                         KISOR   v. SHULKIN
    tion of his claim. 5 If it did, then Mr. Kisor would have
    been eligible for an effective date of December of 1982 for
    his disability benefits, “the date the VA received the
    previously decided claim.” 38 C.F.R. § 3.156(c)(3).
    After reviewing the evidence, the Board denied
    Mr. Kisor entitlement to an effective date earlier than
    June 5, 2006. J.A. 91. The Board found that the VA did
    receive service department records documenting
    Mr. Kisor’s participation in Operation Harvest Moon after
    the May 1983 rating decision. J.A. 89–90. The Board
    concluded, though, that the records were not “relevant”
    for purposes of § 3.156(c)(1). J.A. 90. The Board ex-
    plained that the 1983 rating decision denied service
    connection because there was no diagnosis of PTSD, and
    because service connection can be granted only if there is
    a current disability. 6 
    Id. (citing Brammer
    v. Derwinski, 
    3 Vet. App. 223
    (1992)). The Board stated that “relevant
    evidence, whether service department records or other-
    wise, received after the rating decision would suggest or
    better yet establish that the Veteran has PTSD as a
    current disability.” 
    Id. The Board
    noted that Mr. Kisor’s
    “service personnel records and the daily log skip this
    antecedent to address the next service connection re-
    5   The newly-submitted material related to
    Mr. Kisor’s Marine Corps service in Vietnam, including
    his participation in Operation Harvest Moon. J.A. 94–97.
    These records had not been part of Mr. Kisor’s claims file
    in May of 1983 when the RO first denied his claim.
    6   Service connection for PTSD requires (1) a medi-
    cal diagnosis of the condition, (2) a medically established
    link between current symptoms and an in-service stress-
    or, and (3) credible evidence showing that the in-service
    stressor occurred.     See 38 C.F.R. § 3.304(f); Golz v.
    Shinseki, 
    590 F.3d 1317
    , 1321–22 (Fed. Cir. 2010).
    KISOR   v. SHULKIN                                         9
    quirement of a traumatic event during service.” 
    Id. Finally, the
    Board concluded with the observation that
    the records at issue were not “outcome determinative” and
    “not relevant to the decision in May 1983 because the
    basis of the denial was that a diagnosis of PTSD was not
    warranted, not a dispute as to whether or not the Veteran
    engaged in combat with the enemy during service.”
    J.A. 90–91.
    Mr. Kisor appealed the Board’s decision to the Veter-
    ans Court. There, he argued that the Board had “failed to
    consider and apply the provisions of 38 C.F.R. § 3.156(c).” 7
    Kisor, 
    2016 WL 337517
    , at *1. The court rejected the
    argument. The court noted that Mr. Kisor did not argue
    that the service department records presented after the
    May 1983 rating decision contained a diagnosis of PTSD,
    the absence of such a diagnosis having been the basis for
    the RO’s 1983 rating decision. 
    Id. at *2.
    The Veterans
    Court stated that it was “not persuaded that the Board
    incorrectly applied § 3.156.” 
    Id. at *3.
    Accordingly, it
    held that Mr. Kisor had “failed to demonstrate error in
    the Board’s findings that an effective date earlier than
    June 5, 2006, is not warranted for the grant of service
    7   Mr. Kisor’s appeal to the Veterans Court focused
    solely on the Board’s purported misinterpretation of 38
    C.F.R. § 3.156(c)(1). Mr. Kisor did not pursue his CUE or
    duty-to-assist claims before the Veterans Court, and he
    has not raised them before us. We therefore consider
    them waived. See, e.g., Emenaker v. Peake, 
    551 F.3d 1332
    , 1337 (Fed. Cir. 2008) (considering an argument
    waived on appeal when it was not timely presented to the
    Veterans Court); SmithKline Beecham Corp. v. Apotex
    Corp., 
    439 F.3d 1312
    , 1319 (Fed. Cir. 2006) (“[A]rguments
    not raised in the opening brief are waived.”).
    10                                           KISOR   v. SHULKIN
    connection for PTSD.” 
    Id. Mr. Kisor
    timely appealed the
    Veterans Court’s decision.
    DISCUSSION
    I.
    Section 7292 of title 38 of the United States Code
    grants us jurisdiction over decisions of the Veterans
    Court. Section 7292 provides that we “‘shall decide all
    relevant questions of law’ arising from appeals from
    decisions of the Veterans Court, but, ‘[e]xcept to the
    extent that an appeal . . . presents a constitutional issue,
    [we] may not review (A) a challenge to a factual determi-
    nation, or (B) a challenge to a law or regulation as applied
    to the facts of a particular case.’” Sneed v. McDonald, 
    819 F.3d 1347
    , 1350–51 (Fed. Cir. 2016) (quoting 38 U.S.C.
    § 7292(d)(1)–(2)).
    As discussed more fully below, on appeal Mr. Kisor
    argues that the Veterans Court misinterpreted 38 C.F.R.
    § 3.156(c)(1). An argument that the Veterans Court
    misinterpreted a regulation falls within our jurisdiction.
    See 38 U.S.C. § 7292(c) (granting this court “exclusive
    jurisdiction to review and decide any challenge to the
    validity of any . . . regulation or any interpretation there-
    of” by the Veterans Court); Spicer v. Shinseki, 
    752 F.3d 1367
    , 1369 (Fed. Cir. 2014); Githens v. Shinseki, 
    676 F.3d 1368
    , 1371 (Fed. Cir. 2012).
    We must set aside an interpretation of a regulation
    that we find to be:
    (A) arbitrary, capricious, an abuse of discretion, or
    otherwise not in accordance with law;
    (B) contrary to constitutional right, power, privi-
    lege, or immunity;
    (C) in excess of statutory jurisdiction, authority,
    or limitations, or in violation of a statutory right;
    or
    KISOR   v. SHULKIN                                         11
    (D) without observance of procedure required by
    law.
    38 U.S.C. § 7292(d)(1)(A)–(D); Sursely v. Peake, 
    551 F.3d 1351
    , 1354 (Fed. Cir. 2009).
    II.
    Mr. Kisor contends that, in affirming the decision of
    the Board, the Veterans Court erred in its interpretation
    of 38 C.F.R. § 3.156(c)(1). 8 As seen, the regulation pro-
    8      Mr. Kisor never argued before the Veterans Court
    that the Board misinterpreted the term “relevant” in
    § 3.156(c).      See J.A. 117–29 (Opening Brief), 155–65
    (Reply Brief). Instead, as noted, he argued that the Board
    “failed to consider and apply the provisions
    of . . . § 3.156(c).” J.A. 123; see J.A. 128 (raising “a ques-
    tion of regulatory interpretation” regarding whether “the
    use of the phrase ‘that existed’ [in § 3.156(c)(1)] mean[s]
    that the relevant official service department records must
    have existed when the VA first decided the claim”).
    Mr. Kisor’s failure to challenge the Board’s interpretation
    of “relevant” before the Veterans Court could constitute
    waiver. See 
    Emenaker, 551 F.3d at 1337
    (“In order to
    present a legal issue in a veteran’s appeal, the appellant
    ordinarily must raise the issue properly before the Veter-
    ans Court . . . .”). The Board did determine, however, that
    the “service department records received . . . were not
    relevant.” J.A. 79; see J.A. 91 (stating that “those docu-
    ments were not relevant to the [VA’s] decision” denying
    his 1982 claim); see also J.A. 147 (VA Response Brief
    before the Veterans Court explaining that the Board
    determined that the service records were not relevant).
    And at oral argument before us, the government aban-
    doned its contention that Mr. Kisor had waived his argu-
    ment regarding the interpretation of § 3.156(c)(1). Oral
    12                                         KISOR   v. SHULKIN
    vides that the VA will “reconsider” a claim if it “receives
    or associates with the claims file relevant official service
    department records that existed and had not been associ-
    ated with the claims file when VA first decided the claim.”
    38 C.F.R. § 3.156(c)(1) (emphasis added). Mr. Kisor states
    that the VA should have reconsidered his claim under the
    regulation and thus afforded him the favorable effective
    date treatment that the regulation provides. He argues
    that the Veterans Court, like the Board, “mistakenly
    interpreted the term ‘relevant’ as used in 38 C.F.R.
    § 3.156(c)(1) as related only to service department records
    that countered the basis of the prior denial.” Appellant’s
    Br. 5.     In making this argument, he points to
    § 3.156(c)(1)(i), which provides in part that service de-
    partment records “include, but are not limited to: . . .
    [s]ervice records that are related to a claimed in-service
    event, injury, or disease, regardless of whether such
    records mention the veteran by name, as long as the other
    requirements of [subsection] (c) of this section are met.” 9
    Appellant’s Br. 8–9. Stating that nothing in the regula-
    tion “says that the service records must relate to the
    reason for the last denial,” Mr. Kisor urges that a service
    department record is relevant if it has “any tendency to
    make the existence of any fact that is of consequence to the
    determination of the action more probable or less probable
    than it would be without the evidence.” Appellant’s
    Argument at 18:47–21:30 (No. 16-1929), http://
    oralarguments.cafc.uscourts.gov/default.aspx?fl=
    2016-1929.mp3. Accordingly, we decline to find waiver
    here. See Singleton v. Wulff, 
    428 U.S. 106
    , 121 (1976)
    (stating that waiver is an issue “left primarily to the
    discretion of the courts of appeals”).
    9   There is no dispute that the personnel records at
    issue in this case are “service records” within the meaning
    of 38 C.F.R. § 3.156(c)(1)(i).
    KISOR   v. SHULKIN                                      13
    Br. 9–10 (quoting Counts v. Brown, 
    6 Vet. App. 473
    , 476
    (1994)).   According to Mr. Kisor, the newly-provided
    service department records demonstrate that he was
    subjected to the trauma of combat, thereby establishing
    his exposure to an in-service stressor. 
    Id. at 10–13.
        The government responds that the Veterans Court
    and the Board did not misinterpret § 3.156(c)(1). The
    government takes the position that whether a service
    department record is relevant depends upon the particu-
    lar claim and the other evidence of record. Appellee’s
    Br. 14. Thus, the government posits, “if a record is one
    that the VA had no obligation to consider because it would
    not have mattered in light of the other evidence, then it
    cannot trigger reconsideration.” 
    Id. at 15.
        Turning to the case at hand, the government states
    that the records based upon which Mr. Kisor seeks recon-
    sideration under § 3.156(c)(1) address only the issue of
    whether there was an in-service stressor, not the requisite
    medical diagnosis of PTSD. 
    Id. at 17.
    The government
    states: “The issue of an in-service stressor was never
    disputed in the 1983 claim; in fact, the examiner noted
    that Mr. Kisor participated in Operation Harvest Moon
    and ‘was involved in one major ambush which resulted in
    13 deaths in a large company.’” 
    Id. (citing J.A.
    19–20).
    Accordingly, the government argues that none of the
    service department records at issue were relevant under
    the regulation because they related to the existence of an
    in-service stressor, which was not in dispute, rather than
    to a diagnosis of PTSD, the absence of which was the
    basis for the RO’s denial of Mr. Kisor’s claim in 1983. 
    Id. at 17–18.
        Finally, the government urges us to reject Mr. Kisor’s
    argument that the Veterans Court and the Board con-
    strued the regulation too narrowly because they inter-
    preted relevance as “related only to records that
    countered the basis of the prior denial.” 
    Id. at 18
    (citing
    14                                         KISOR   v. SHULKIN
    Appellant’s Br. 5). The government contends that neither
    tribunal required that the evidence relate to the basis for
    the prior denial in all cases. 
    Id. at 18
    –19. Rather, the
    evidence simply has to be “relevant.” The government
    concludes that “[i]t just so happened that in the present
    case, evidence related to the in-service stressor could not
    be relevant without a medical diagnosis for PTSD at the
    time of the previous claim.” 
    Id. at 19.
                                III.
    For the following reasons, we hold that the Veterans
    Court did not misinterpret § 3.156(c)(1). We therefore
    affirm the court’s decision affirming the Board’s decision
    denying Mr. Kisor entitlement to an effective date earlier
    than June 5, 2006, for the grant of service connection for
    PTSD.
    At the heart of this appeal is Mr. Kisor’s challenge to
    the VA’s interpretation of the term “relevant” in 38 C.F.R.
    § 3.156(c)(1). 10 As a general rule, we defer to an agency’s
    interpretation of its own regulation “as long as the regula-
    tion is ambiguous and the agency’s interpretation is
    neither plainly erroneous nor inconsistent with the regu-
    lation.” Gose v. U.S. Postal Serv., 
    451 F.3d 831
    , 836 (Fed.
    Cir. 2006) (citing Gonzales v. Oregon, 
    546 U.S. 243
    (2006);
    Christensen v. Harris Cty., 
    529 U.S. 576
    , 588 (2000);
    Bowles v. Seminole Rock & Sand Co., 
    325 U.S. 410
    , 413–
    14 (1945)); see also Long Island Care at Home, Ltd. v.
    10 The Board interpreted 38 C.F.R. § 3.156(c)(1)
    when it ruled that Mr. Kisor’s service department records
    were not “relevant” under that subsection. See J.A 90–91.
    Because the Board is part of the VA, see 38 U.S.C.
    § 7101(a); Henderson ex rel. Henderson v. Shinseki, 
    562 U.S. 428
    , 431 (2011), the Board’s interpretation of the
    regulation is deemed to be the agency’s interpretation.
    KISOR   v. SHULKIN                                       15
    Coke, 
    551 U.S. 158
    , 171 (2007) (“[A]n agency’s interpreta-
    tion of its own regulations is controlling unless plainly
    erroneous or inconsistent with the regulations being
    interpreted.” (internal quotation marks omitted) (quoting
    Auer v. Robbins, 
    519 U.S. 452
    , 461 (1997))).
    We hold that § 3.156(c)(1) is ambiguous as to the
    meaning of the term “relevant.” In our view, the regula-
    tion is vague as to the scope of the word, and canons of
    construction do not reveal its meaning. See 
    Gose, 451 F.3d at 839
    (ruling that a regulatory phrase is ambiguous
    when “the regulation is vague as to the scope of the
    phrase”); Cathedral Candle Co. v. Int’l Trade Comm’n,
    
    400 F.3d 1352
    , 1362 (Fed. Cir. 2005) (holding a statute
    ambiguous when “traditional tools of statutory construc-
    tion” did not resolve the construction dispute). Signifi-
    cantly, § 3.156(c)(1) does not specify whether “relevant”
    records are those casting doubt on the agency’s prior
    rating decision, those relating to the veteran’s claim more
    broadly, or some other standard. This uncertainty in
    application suggests that the regulation is ambiguous.
    See, e.g., Abbott Labs. v. United States, 
    573 F.3d 1327
    ,
    1331 (Fed. Cir. 2009) (holding the regulatory term “affect”
    was ambiguous when the regulation did not specify the
    types of effects falling within its scope).
    The varying, alternative definitions of the word “rele-
    vant” offered by the parties further underscore
    § 3.156(c)(1)’s ambiguity. See Nat’l R.R. Passenger Corp.
    v. Bos. & Me. Corp., 
    503 U.S. 407
    , 418 (1992) (“The exist-
    ence of alternative dictionary definitions . . . , each mak-
    ing some sense under the statute, itself indicates that the
    statute is open to interpretation.”); Hymas v. United
    States, 
    810 F.3d 1312
    , 1320–21 (Fed. Cir. 2016). In his
    briefs, Mr. Kisor defines “relevant” in a way mirroring the
    federal rules of evidence. Compare Appellant’s Br. 9–10
    (defining “relevant” as “any tendency to make the exist-
    ence of any fact that is of consequence to the determina-
    tion of the action more [or less] probable” (emphasis
    16                                         KISOR   v. SHULKIN
    omitted)), with Fed. R. Evid. 401(a)–(b) (defining “rele-
    vant” as “any tendency to make a fact more or less proba-
    ble” when the “fact is of consequence in determining the
    action”). Mr. Kisor thus posits that his personnel records
    are “relevant” because they speak to the presence of an in-
    service stressor, one of the requirements of compensation
    for an alleged service-connected injury. See 38 C.F.R.
    § 3.304(f).
    The government, in contrast, collects various compet-
    ing definitions from case law, legal dictionaries, and legal
    treatises. See Appellee’s Br. 14–15 (defining “relevant”
    as, inter alia, “bearing upon or properly applying to the
    matter at hand,” and “[l]ogically connected and tending to
    prove or disprove a matter in issue” (emphasis added)
    (citing Forshey v. Principi, 
    284 F.3d 1335
    , 1351 (Fed. Cir.
    2002) (en banc); Relevant, BLACK’S LAW DICTIONARY (10th
    ed. 2014))). These definitions support the government’s
    argument that, in this case, Mr. Kisor’s personnel records
    were not “relevant” because they addressed the matter of
    an in-service stressor, which was not “in issue,” rather
    than the issue of whether he suffered from PTSD, which
    was “in issue.” Both parties insist that the plain regula-
    tory language supports their case, and neither party’s
    position strikes us as unreasonable. We thus conclude
    that the term “relevant” in § 3.156(c)(1) is ambiguous. See
    Viraj Grp. v. United States, 
    476 F.3d 1349
    , 1355–56 (Fed.
    Cir. 2007) (ruling that a “regulation is ambiguous on its
    face” when competing definitions for a disputed term
    “seem reasonable”); Info. Tech. & Applications Corp. v.
    United States, 
    316 F.3d 1312
    , 1320–21 (Fed. Cir. 2003).
    Because § 3.156(c)(1) is ambiguous, the only remain-
    ing question is whether the Board’s interpretation of the
    regulation is “plainly erroneous or inconsistent” with the
    VA’s regulatory framework. Long 
    Island, 551 U.S. at 171
    .
    As seen, the Board reasoned that Mr. Kisor’s supple-
    mental personnel records were not relevant because they
    contained information that (1) was already known,
    KISOR   v. SHULKIN                                      17
    acknowledged, and undisputed in the RO’s 1983 decision,
    and (2) did not purport to affect the outcome of that
    decision. J.A. 90–91. The Board’s ruling was thus based
    upon the proposition that, as used in § 3.156(c)(1), “rele-
    vant” means noncumulative and pertinent to the matter
    at issue in the case. The Board’s interpretation does not
    strike us as either plainly erroneous or inconsistent with
    the VA’s regulatory framework.
    In this case, the records Mr. Kisor submitted to the
    RO in 2006 detailing his participation in Operation Har-
    vest Moon were superfluous to the information already
    existing in his file. Indeed, in 1983 the VA examiner
    expressly recounted how Mr. Kisor experienced “one
    major ambush which resulted in 13 deaths in a large
    company,” and that “[t]his occurred during Operation
    Harvest Moon.” J.A. 19–20 (emphasis added). In addi-
    tion, Mr. Kisor’s personnel records submitted in 2006 are
    not probative here because they do not purport to remedy
    the defects of his 1982 PTSD claim. The RO denied
    Mr. Kisor’s PTSD claim because the requisite diagnosis of
    PTSD was lacking. J.A. 21–23; see 38 C.F.R. § 3.304(f)
    (requiring a diagnosis of PTSD to establish service con-
    nection); Young v. McDonald, 
    766 F.3d 1348
    , 1354 (Fed.
    Cir. 2014) (“[T]he VA has long required a medical diagno-
    sis of PTSD to establish service connection.”). Mr. Kisor
    does not urge that the 2006 records provide that diagno-
    sis. See Appellant’s Br. 5–6. Instead, the records show
    that Mr. Kisor was exposed to an in-service stressor—a
    wholly separate element for establishing service connec-
    tion that, critically, was never at issue in the case. J.A.
    19–20. Because Mr. Kisor’s 2006 records did not remedy
    the defects of his 1982 claim and contained facts that
    were never in question, we see no plain error in the
    Board’s conclusion that the records were not “relevant” for
    purposes of § 3.156(c)(1). See 
    Blubaugh, 773 F.3d at 1314
    (reasoning that § 3.156(c) did not apply when service
    records “did not remedy [the] defects” of a prior rating
    18                                         KISOR   v. SHULKIN
    decision and contained facts that “were never in ques-
    tion”).
    Finally, as noted, Mr. Kisor argues that the Board
    and Veterans Court construed § 3.156(c)(1) too narrowly,
    by interpreting “relevant” records to be “records that
    countered the basis of the prior denial [of benefits].”
    Appellant’s Br. 5. We do not agree with this reading of
    the Board’s or the Veterans Court’s decision. Nothing in
    either tribunal’s interpretation of § 3.156(c)(1) strikes us
    as requiring, across the board, that relevant records must
    relate to the basis of a prior denial. Rather, we under-
    stand the Board and Veterans Court as finding only that,
    on the facts and record of this case, Mr. Kisor’s later-
    submitted materials were not relevant to determination of
    his claim. See Kisor, 
    2016 WL 337517
    , at *2–3.
    CONCLUSION
    For the foregoing reasons, we see no error in the
    Board’s interpretation of § 3.156(c)(1) or in the Veterans
    Court’s affirmance of the Board’s interpretation. See
    Kisor, 
    2016 WL 337517
    , at *2. The decision of the Veter-
    ans Court affirming the Board’s decision denying
    Mr. Kisor entitlement to an effective date earlier than
    June 5, 2006 for service connection for PTSD is therefore
    affirmed.
    AFFIRMED
    COSTS
    No costs.