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No. 9374600
United States Court of Appeals for the Ninth Circuit
Robert Kamp v. Kilolo Kijakazi
No. 9374600 · Decided February 10, 2023
No. 9374600·Ninth Circuit · 2023·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
February 10, 2023
Citation
No. 9374600
Disposition
See opinion text.
Full Opinion
NOT FOR PUBLICATION FILED
UNITED STATES COURT OF APPEALS FEB 10 2023
MOLLY C. DWYER, CLERK
U.S. COURT OF APPEALS
FOR THE NINTH CIRCUIT
ROBERT DAVID KAMP, No. 21-35934
Plaintiff-Appellant, D.C. No. 6:20-cv-00847-MK
v.
MEMORANDUM*
KILOLO KIJAKAZI, Acting Commissioner
of Social Security,
Defendant-Appellee.
Appeal from the United States District Court
for the District of Oregon
Mustafa T. Kasubhai, Magistrate Judge, Presiding
Submitted November 8, 2022**
Portland, Oregon
Before: CLIFTON and BUMATAY, Circuit Judges, and BAKER,*** International
Trade Judge.
Dissent by Judge BUMATAY.
Plaintiff Robert Kamp appeals the district court’s order affirming an
*
This disposition is not appropriate for publication and is not precedent
except as provided by Ninth Circuit Rule 36-3.
**
The panel unanimously concludes this case is suitable for decision
without oral argument. See Fed. R. App. P. 34(a)(2).
***
The Honorable M. Miller Baker, Judge for the United States Court of
International Trade, sitting by designation.
Administrative Law Judge’s (“ALJ”) denial of Social Security disability benefits.
We have jurisdiction under 28 U.S.C. § 1291. We reverse and remand.
Kamp suffers from multiple mental disorders. His disability claim is
complicated by a history of stimulant abuse and continued medicinal marijuana
use.
In denying his claim, the ALJ rejected opinion evidence from Kamp’s
medical providers for allegedly failing to evaluate the impact of his substance use
on his symptoms. The ALJ initially determined that Kamp met Listing 12.03 for
schizophrenia and other psychotic disorders with substance abuse at step three of
the sequential evaluation. In the second round, however, she concluded that his
substance abuse was material to the disability finding, and without it, he could not
meet the Listing. She ultimately determined that he was not disabled, and the
district court affirmed.
We review a district court’s decision de novo and uphold an ALJ’s disability
determination “unless it is either not supported by substantial evidence or is based
upon legal error.” Woods v. Kijakazi, 32 F.4th 785, 788 (9th Cir. 2022).
I. Medical Opinion Evidence
Substantial evidence does not support the ALJ’s rejection of the medical
providers’ opinions for their failure to consider the impact of Kamp’s substance
use on his symptoms. The ALJ’s rejection of the providers’ opinions impacted the
2 21-35934
Listing analysis and residual functioning capacity determination in step three, as
well as the vocational hypotheticals in step five.
The medical source statement forms instructed the providers to “not include
any limitations which you believe the individual has as a result of his or her
alcoholism or drug addiction, if any. In other words, do not include limitations
which would go away if the individual stopped using drugs or alcohol.” There is no
evidence to suggest that the providers did not follow the instructions.1 On the
contrary, Kamp’s therapist wrote in an explanatory letter attached to her form that
Kamp “has been clean and sober for almost two years. The severity of his illness
while clean indicates that it is not related to substance use.” Therefore, these forms
reflected the providers’ observations of Kamp’s limitations without substances.
Additionally, treatment records show that the providers repeatedly assessed
whether his symptoms were due to substance use and determined that they were
not. There is thus no evidence, let alone substantial evidence, to support the ALJ’s
conclusion that the providers failed to consider his non-substance-related
symptoms—in fact, they did just that.
II. Materiality of Substance Use
Substantial evidence does not support the ALJ’s finding that Kamp’s history
1
Because the ALJ failed to acknowledge the instruction, we cannot assess how it
affected the ALJ’s assessment of the therapist’s analysis.
3 21-35934
of stimulant abuse and continued medicinal marijuana use was material to the
disability finding at step three.
Claimants will not be considered “disabled” for the purpose of awarding
benefits if their “drug addiction or alcoholism” (“DAA”) is a contributing factor
material to the disability determination. 42 U.S.C. §§ 423(d)(2)(C), 1382c(a)(3)(J);
SSR 13-2p(a), 2013 WL 621536 at *2.2 The key issue in evaluating whether DAA
is material is whether claimants would still be found disabled if they stopped using
substances. 20 C.F.R. §§ 404.1535(b)(1), 416.935(b)(1); SSR 13-2p(2), 2013 WL
621536 at *4.
Here, the ALJ determined at the third step of the sequential evaluation that
Kamp met Listing 12.03 with substance abuse, but he would not meet the Listing if
he stopped using. In other words, the ALJ found that his substance use was
material to the disability finding.
However, substantial evidence does not support the ALJ’s conclusion. No
medical professional involved in this case—not even the state consultants3—
2
SSRs “do not carry the force of law, but they are binding on ALJs nonetheless,”
and “[t]hey reflect the official interpretation of the SSA and are entitled to some
deference as long as they are consistent with the Social Security Act and
regulations.” Molina v. Astrue, 674 F.3d 1104, 1114 (9th Cir. 2012).
3
In determining that Kamp was not disabled in 2017, the state consultants did not
review other medical source opinions. On remand, the persuasiveness of the
consultants’ opinions must be considered in light of their limited review and
medical evidence from Kamp’s providers.
4 21-35934
opined that Kamp’s substance use was material. Rather, his providers considered
his stimulant use disorder “in remission” after March 2017 and documented his
completion of substance abuse treatment.
Kamp continued to use marijuana medicinally with his providers’
permission.4 While his psychiatrist noted that marijuana use “may perpetuate [his]
symptoms to some extent,” the same psychiatrist diagnosed him with
schizophrenia/schizoaffective disorder,5 which necessarily entails ruling out
substances as a cause of the symptoms of psychosis.6 American Psychiatric
Association, Diagnostic and Statistical Manual of Mental Disorders 99, 105 (5th
ed. 2022) (“DSM-5”). The psychiatrist later explained in his medical source
statement that Kamp had the highest degree of impairment in all but one functional
category without substance use.
4
The dissent does not acknowledge that Kamp’s marijuana use was medicinal. The
fact that, as the dissent notes, certain providers expressed concern about his
marijuana use, Dissent at 1, does not resolve the conflict between the doctors’
approaches.
5
Kamp’s psychiatrist lists both schizophrenia and schizoaffective disorder
diagnoses. While these disorders are mutually exclusive, see American Psychiatric
Association, Diagnostic and Statistical Manual of Mental Disorders 99 (5th ed.
2022), we list both because we are not equipped to determine which diagnosis is
more proper.
6
If substances cannot be the cause of the symptoms of psychosis, then the dissent’s
emphasis that “Kamp admitted that he used marijuana every day,” Dissent at 1,
cannot be relevant.
5 21-35934
In concluding that evidence of Kamp’s substance use precludes a disability
finding, the dissent ignores the required materiality analysis. See Dissent at 1–2.
Both the Social Security Act and Social Security Ruling 13-2p, which governs the
Social Security Administration’s (“SSA”) review when there is evidence of DAA,
preclude a disability finding only when a claimant’s substance use is a contributing
factor material to the determination. 42 U.S.C. §§ 423(d)(2)(C), 1382c(a)(3)(J);
SSR 13-2p(a), 2013 WL 621536 at *2. Evidence of substance use does not in itself
establish materiality.7 See SSR 13-2p(8)(b), 2013 WL 621536 at *10. Rather,
materiality is shown through evidence “establish[ing] that a claimant with a co-
occurring mental disorder(s) would not be disabled in the absence of DAA.”8 Id. at
(7)(b), 2013 WL 621536 at *9. No such evidence is present in the record.
On the contrary, the evidence demonstrates that Kamp’s providers
determined he suffered from schizophrenia/schizoaffective disorder without
substance use. For example, one provider explained that his “diagnoses have been
7
Indeed, the SSA requires that, to be considered DAA, and thereby trigger a
materiality analysis, a claimant’s substance use must first meet the definition of a
“Substance Use Disorder” in the DSM-5. SSR 13-2p(1)(a)(i), 8(b)(ii), 2013 WL
621536 at *3, 10.
8
Unlike physical impairment cases, the SSA does not permit ALJs “to rely
exclusively on medical expertise and the nature of a claimant’s mental disorder” to
establish materiality in cases involving mental disorders because there is no
“research data” that can “predict reliably that any given claimant’s co-occurring
mental disorder would improve, or the extent to which it would improve, if the
claimant were to stop using drugs.” SSR 13-2p(7)(a)–(b), 2013 WL 621536 at *9.
6 21-35934
complicated by a history of stimulant use. In order to obtain the most accurate
clinical picture it was important to differentiate between symptoms due to
substance use and symptoms due to mental illness. [He] has maintained his
sobriety from stimulants for approximately the past year and continues to
experience symptoms consistent with a psychotic disorder.” Further, another
provider observed that “[t]his is a complex client presentation, [Kamp] likely has a
psychotic disorder. Psychotic symptoms have increased, despite the fact that [he]
continues to be clean from methamphetamine use for almost 1 year. Does not
appear to be a drug induced psychosis.” Thus, while the record evidences a history
of stimulant use disorder now in remission and continued medicinal marijuana use,
it does not support the conclusion that his substance use was material to the
disability determination.
Remand for further proceedings, as opposed to remand with instructions to
award benefits, is warranted here for further consideration and development of
evidence. See Treichler v. Comm’r of Soc. Sec. Admin., 775 F.3d 1090, 1101 (9th
Cir. 2014). For the foregoing reasons, we reverse the district court’s order
affirming the denial of benefits and remand to the district court with instructions to
remand to the ALJ for further proceedings consistent with this disposition.
REVERSED and REMANDED for further proceedings.
7 21-35934
FILED
FEB 10 2023
Kamp v. Kijakazi, No. 21-35934
BUMATAY, Circuit Judge, dissenting: MOLLY C. DWYER, CLERK
U.S. COURT OF APPEALS
Our duty is to uphold an administrative law judge’s findings if they are
supported by substantial evidence. Substantial evidence is a low bar that requires
only evidence that “a reasonable mind might accept as adequate to support a
conclusion.” Molina v. Astrue, 674 F.3d 1104, 1110 (9th Cir. 2012). And a claimant
bears the burden of proving that drug or alcohol addiction is not a contributing factor
material to his disability. Parra v. Astrue, 481 F.3d 742, 748 (9th Cir. 2007).
Because the majority improperly disregards the ALJ’s determination that Robert
Kamp’s drug use was material to his impairments, I respectfully dissent.
Based on the record here, we should have deferred to the ALJ’s finding that
Kamp’s drug abuse was a “contributing factor material” to his disability. See 20
C.F.R. §§ 404.1535, 416.935. The record shows that Kamp used marijuana, bath
salts, and methamphetamines during his disability period. Indeed, Kamp admitted
that he used marijuana every day. This was despite repeated warnings from his
medical providers that his chronic drug use exacerbated his psychiatric disorders.
As one mental health provider found, Kamp’s depression had been “increasing since
[he] increased THC use” and she recommended that Kamp discontinue smoking
marijuana. Kamp himself reported that his marijuana use made his symptoms worse.
Kamp’s mother also testified that his problems began after he started using
methamphetamines, bath salts, and other substances. Meanwhile, Kamp’s
1
symptoms improved when he stopped using stimulants, and they improved still
further when he was prescribed a new psychotropic medication. If any question was
left on this issue, it’s uncontested that Kamp went to the emergency room for “acute
methamphetamine abuse” during the disability period. This is more than enough
evidence to support the ALJ’s determination that Kamp’s drug use was material to
his disability.
To overrule this mountain of evidence, the majority plays both factfinder and
doctor. First, the majority casts aside the ALJ’s and other providers’ concerns about
Kamp’s marijuana use and instead condones the everyday use as “medicinal.” Maj.
Dec. 5. n.4. But the ALJ made no finding that Kamp’s marijuana use was under the
care of a physician. There’s no prescription for marijuana in the record at all—let
alone for Kamp’s excessive use. In any case, the abuse of any drug—prescribed or
not—can serve as a contributing factor material to disability under the regulations.
See SSR 13-2p, Evaluating Cases Involving Drug Addiction and Alcoholism, 2013
WL 621536, at *3.
Second, the majority offers its medical opinion that marijuana use must be
“necessarily . . . rul[ed] out” as a cause for psychosis for those who suffer from
schizophrenia. Maj. Dec. 5. The majority goes so far to suggest marijuana use
cannot even “be relevant” to the analysis. Id. at n.6. While we can all read the DSM-
5, that doesn’t mean we are qualified to make such medical diagnoses.
2
Third, the majority improperly concludes there’s no evidence of the
materiality of the Kamp’s drug abuse, despite acknowledging that there was a
“conflict between the doctors’ approaches” to his marijuana use. Maj. Dec. 5 n.4.
To be sure, as the majority points out, there is contrary evidence in the record—some
examiners thought Kamp’s schizophrenia outweighed his drug use. But it is the
ALJ—not us—that gets to resolve these conflicts.
Finally, the majority inappropriately rebalances the ALJ’s weighing of
psychiatrist Dr. Marc Williams’ and social worker Sarah Haefele’s medical
statement forms. While the forms instructed the providers not to consider his
substance use in assessing Kamp, Dr. Williams concluded that Kamp had the highest
level of impairments even though he also said that Kamp’s marijuana use “may
perpetuate” his mental impairments. Haefele claimed that Kamp was “clean and
sober” for two years—a finding that was just factually wrong. The ALJ also noted
that these two providers’ opinions were contradicted by the record. For example,
they both believed that Kamp did not have the ability to use public transportation.
But Kamp reported that he traveled to the Social Security Office on his own and that
he took public transportation. The ALJ was thus entitled to discount Williams’ and
Haefele’s opinions based on these discrepancies.
Given our limited role in administrative decisions, I would have affirmed here.
3
Plain English Summary
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS FEB 10 2023 MOLLY C.
Key Points
01NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS FEB 10 2023 MOLLY C.
02COURT OF APPEALS FOR THE NINTH CIRCUIT ROBERT DAVID KAMP, No.
03MEMORANDUM* KILOLO KIJAKAZI, Acting Commissioner of Social Security, Defendant-Appellee.
04Kasubhai, Magistrate Judge, Presiding Submitted November 8, 2022** Portland, Oregon Before: CLIFTON and BUMATAY, Circuit Judges, and BAKER,*** International Trade Judge.
Frequently Asked Questions
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS FEB 10 2023 MOLLY C.
FlawCheck shows no negative treatment for Robert Kamp v. Kilolo Kijakazi in the current circuit citation data.
This case was decided on February 10, 2023.
Use the citation No. 9374600 and verify it against the official reporter before filing.