CPT® Code 90792

Last Updated: February 2026 | Verified for 2026 AMA, CPT & CMS Guidance (as reflected in sources below)

Quick Reference:

• What 90792 means: A comprehensive psychiatric diagnostic evaluation that includes medical services (i.e., a diagnostic interview plus medically-oriented assessment/decision-making). Use 90792 when the evaluation includes medical components that go beyond a non-medical diagnostic assessment.
• 90792 vs 90791: CPT 90791 is the psychiatric diagnostic evaluation without medical services, while 90792 includes medical services. Selecting the correct code depends on whether medical services are performed as part of the diagnostic evaluation.
• Who can bill 90792: 90792 is for clinicians who can provide the medical portion of the evaluation (e.g., prescribing/medical assessment when applicable). Non-prescribing clinicians typically report 90791.
• Frequency and repeat evaluations: Medicare guidance commonly treats 90791/90792 as diagnostic evaluations generally performed once at the onset of an illness/suspected illness, with repeat reporting limited to situations such as a significant break in care or medically necessary re-evaluation contexts described by CMS/MAC guidance.
• Same-day billing limits: MAC guidance commonly discourages or disallows billing 90791/90792 on the same day as an E/M visit for the same patient by the same provider because the diagnostic evaluation is a standalone service category in Medicare/MAC policy discussions.
• Telehealth: Medicare telehealth policy resources identify psychiatric diagnostic evaluations (including 90792) as covered telebehavioral health services when requirements are met. CPT 90792 is widely used for initial psychiatric evaluations when the diagnostic work includes medical services.

*Compliance risk usually comes from a few recurring problems: *

• selecting 90792 when the record does not demonstrate the medical-services portion,
• repeating 90792 too frequently without documentation of why a new diagnostic evaluation is medically necessary, and
• billing it concurrently with services that payer policy treats as overlapping or not separately payable in the same session. This 2026 guide is written to be payer-realistic: it focuses on what Medicare and Medicare Administrative Contractor (MAC) guidance tends to scrutinize (documentation, frequency, and correct code family selection).

1. Definition & Procedure Scope

CPT 90792 is used for a psychiatric diagnostic evaluation that includes medical services. In practice, it is typically the comprehensive initial psychiatric assessment performed by a clinician providing medical assessment and/or medical decision-making as part of the diagnostic process. The CPT descriptor is summarized in coding references such as AAPC’s Codify listing for 90792.

A compliant 90792 note generally demonstrates two intertwined elements:

• Psychiatric diagnostic evaluation components: history and presenting concerns, prior psychiatric history, psychosocial context, risk assessment, and a documented mental status examination leading to diagnostic impressions and an initial treatment plan.
• Medical services integrated into the evaluation: clinically relevant medical assessment and documentation consistent with the provider’s scope, such as medication review with medically oriented decisions, assessment of medical contributors, and other medical service elements reflected in payer guidance distinguishing 90792 from 90791. Importantly, 90792 is the diagnostic evaluation code; it is not psychotherapy and not a standard office/outpatient E/M code. CMS coverage articles describing psychiatric diagnostic evaluation and psychotherapy services provide context for how these services are categorized and reviewed in Medicare policy.

Practical compliance boundary: If the record reads like a non-medical diagnostic interview (psychosocial history + MSE + diagnosis) with no clear medical-services component, auditors and payers can treat 90792 as unsupported and expect 90791 logic instead. Conversely, if the service is documented and billed as an E/M visit, it must meet the requirements of that E/M code family. Medicare guidance acknowledges circumstances where a clinician may bill either 90792 or an E/M code when a psychiatric diagnostic evaluation includes medical assessment; the chart must support whichever pathway is chosen.

2. 90792 vs 90791: Choosing the Correct Diagnostic Evaluation Code

The most important coding decision in this family is whether the diagnostic evaluation includes medical services. CPT 90791 is the psychiatric diagnostic evaluation without medical services, while CPT 90792 includes medical services. AAPC’s Codify listings for 90791 and 90792 reflect this distinction.

Medicare contractor guidance also describes the difference in similar terms, emphasizing that 90791 is the psychiatric diagnostic evaluation without medical services and 90792 is the psychiatric diagnostic evaluation with medical services.

2.1 A payer-realistic selection rule

• Use 90791 when the evaluation is diagnostic and comprehensive but does not include medical services as part of the service performed (for example, a diagnostic evaluation performed by a non-prescribing clinician where the medical-services element is not provided).
• Use 90792 when the diagnostic evaluation includes the medical-services component performed by a qualified clinician and documented as part of the diagnostic evaluation. In day-to-day billing, the highest-yield compliance mistake is “automatic” 90792 use for all new intakes in a psychiatry clinic without documenting what made the service medically distinct from 90791. Payers evaluate the record, not the clinic’s typical workflow.

3. What Counts as “Medical Services” in 90792

The phrase “with medical services” is the differentiator, and it needs to be evident in the documentation. Medicare and MAC policy discussions for psychiatric diagnostic evaluations focus on whether the clinician performed a diagnostic evaluation that includes medical assessment and clinical decision-making appropriate for the code billed.

In practice, the medical-services component is commonly reflected through documentation such as:

• Medication-related medical assessment: evaluation of current/past psychotropic medications (and relevant non-psychiatric meds), clinically meaningful side-effect assessment, interaction concerns, adherence issues, and medically oriented medication decisions in the assessment/plan.
• Medical history and relevant review: documentation of relevant medical comorbidities and medical contributors to psychiatric symptoms (e.g., sleep disorders, thyroid disease, substance-related medical issues), as appropriate to the case.
• Medically oriented risk assessment: safety evaluation (e.g., suicide/self-harm risk) is psychiatric, but may incorporate medical considerations such as intoxication risk, withdrawal risk, medication toxicity risk, or medically relevant monitoring plans when indicated.
• Medical orders or coordination: ordering or reviewing medically relevant tests when clinically appropriate, or documenting medical referrals/coordination that are part of the diagnostic evaluation and medical decision-making. The key is not to force a “physical exam” into every evaluation, but to ensure that the record demonstrates the medically oriented services that distinguish 90792 from a non-medical diagnostic evaluation. Medicare policy materials addressing psychiatric diagnostic evaluation and psychiatry/psychology services provide the compliance context for these distinctions.

Documentation principle: “Medical services” should be visible in the note as discrete clinical work. If the only difference between your 90791 and 90792 notes is the code you selected, the service is vulnerable in audit.

4. Where 90792 Is Used: Outpatient, Inpatient Context, and Telehealth

4.1 Outpatient settings (office/clinic/community mental health)

The most common setting for 90792 is outpatient psychiatric intake where diagnostic evaluation includes medical services. Medicare coverage articles and MAC guidance address psychiatric diagnostic evaluation as part of outpatient mental health services and clarify how these codes are evaluated and reported.

4.2 Inpatient context (avoid mismatched code families)

Coding rules differ substantially in inpatient hospital settings because initial hospital care is typically billed under inpatient E/M codes rather than outpatient psychiatric diagnostic evaluation codes. However, Medicare policy discussions recognize that a psychiatric diagnostic re-evaluation can be appropriate in some contexts, and CMS/MAC guidance describes circumstances under which a repeat diagnostic evaluation may be justified (for example, in the context of a new episode of care or significant change).

The operational rule is to avoid “defaulting” to 90792 for inpatient admission work unless payer guidance and the clinical record clearly support that the billed service is a psychiatric diagnostic evaluation service consistent with the code definition and the payer’s billing rules for the setting.

4.3 Telehealth (Medicare telebehavioral billing context)

Federal telehealth billing guidance for behavioral health identifies psychiatric diagnostic evaluation codes, including 90792, as telebehavioral services under Medicare when telehealth requirements are met. Telehealth.HHS.gov’s telebehavioral billing guidance explicitly lists 90792 as a telebehavioral billing service code.

Telehealth does not change the documentation requirement: the record must still support that the service was a psychiatric diagnostic evaluation with medical services. In addition, telehealth claims must follow payer rules for telehealth modality, patient location rules where applicable, and claim formatting rules required by the payer (for example, those described in telebehavioral billing guidance).

Telehealth audit tip: If you deliver 90792 via telehealth, make sure your documentation clearly reflects (1) the diagnostic evaluation components, (2) the medical-services component, and (3) telehealth-specific documentation elements required by your payer (e.g., method of communication, consent where required, and any payer-specific documentation expectations described in policy).

5. Medicare/MAC Billing Rules: Frequency, Same-Day Services, and Common Denials

Medicare policy articles and MAC guidance are the most practical references for how 90792 is paid and how it is denied. CMS coverage articles addressing psychiatric diagnostic evaluation and psychiatry/psychology services discuss how diagnostic evaluations are used and how often they are expected.

5.1 Frequency expectations and repeat reporting

Medicare guidance commonly characterizes psychiatric diagnostic evaluation (90791/90792) as a service that is typically performed once at the onset of illness or suspected illness, with repeat evaluations limited to specific situations (for example, a significant break in treatment or other medically justified reasons described in policy). CMS and MAC materials provide the operational framework for these frequency expectations.

• Per-day expectations: MAC guidance often indicates reporting once per day for these diagnostic evaluation codes, and repeats on the same date are generally not expected unless payer policy explicitly allows and the record clearly supports a separate, distinct diagnostic evaluation service.
• Per-episode expectations: A repeat diagnostic evaluation should be supported by a chart narrative explaining why a new diagnostic evaluation is medically necessary (e.g., a new episode of care, significant clinical change, or other circumstances recognized in policy).

5.2 Same-day services and concurrency pitfalls

A common denial pathway occurs when 90792 is billed alongside services that a payer treats as overlapping with or not separately payable with the diagnostic evaluation. MAC guidance for mental health services provides practical cautions around same-day billing logic (for example, discouraging the use of 90792 on the same day as an E/M service by the same provider).

Another vulnerability is mixing diagnostic evaluation and psychotherapy claims in ways that payer policy treats as duplicative in a single session. CMS coverage articles addressing psychiatric diagnostic evaluation and psychotherapy services provide the framework payers use to evaluate the distinctness of services billed on the same date.

5.3 When E/M codes may be used instead

CMS guidance recognizes that when a psychiatric diagnostic evaluation includes medical assessment, a physician or non-physician practitioner may use CPT 90792 or an E/M code as appropriate to describe the service performed, as addressed in Medicare policy discussion for psychiatry/psychology services. The compliance requirement is that the documentation must support the code chosen (diagnostic evaluation vs E/M structure).

High-yield denial trigger: Billing 90792 as a default “new patient intake” code while also billing an office/outpatient E/M for the same provider/patient/date is a predictable trigger for denial or recoupment unless payer policy clearly allows both and documentation supports distinct, separately identifiable services. MAC guidance is a common reference point for how Medicare contractors view these overlaps.

6. Documentation Standards (Audit-Defensible)

Documentation is the core compliance control for 90792. CMS and MAC policy materials for psychiatric diagnostic evaluation and psychiatry/psychology services emphasize that services must be reasonable and necessary and supported by the medical record.

6.1 Minimum documentation elements (practical checklist)

• Patient identifiers and date of service: clearly identify the patient and the evaluation date; ensure the note is signed with credentials consistent with payer requirements.
• Chief complaint / reason for evaluation: referral question, presenting symptoms, functional impairment, and why a diagnostic evaluation is needed now.
• Biopsychosocial history: psychiatric history, trauma and psychosocial context where relevant, substance use history, medical history relevant to psychiatric presentation, family history, and treatment history.
• Mental status examination: document clinically relevant MSE elements supporting diagnostic formulation and risk assessment.
• Risk assessment: suicide/self-harm, violence risk, grave disability where relevant, and protective factors. Document what was assessed and clinical conclusions.
• Diagnosis and formulation: diagnostic impressions with supporting clinical reasoning and differential diagnosis when appropriate.
• Treatment plan: recommended interventions, follow-up plan, referrals, and safety planning when indicated.
• Medical-services component (the differentiator): documentation of medically oriented evaluation and decision-making that supports billing 90792 rather than 90791. This may include medication assessment/decisions, medically relevant review, and other medical-service elements as applicable to the case and provider scope.

6.2 Time documentation (best practice, not the code definition)

CPT 90792 is not typically treated as a time-threshold code in the way psychotherapy time codes are. Nonetheless, documenting total time can help support the overall complexity and comprehensiveness of the evaluation, and MAC guidance sometimes discusses the value of clear documentation of what was done.

If the service was delivered via telehealth, include telehealth documentation elements consistent with payer guidance (for example, those described in federal telebehavioral billing guidance).

6.3 Medical necessity: align the story, diagnosis, and plan

The ICD-10 diagnosis(es) should align with the presenting symptoms, assessment findings, and the treatment plan. CMS policy materials for psychiatry/psychology services and psychiatric diagnostic evaluation provide the framework payers use for determining whether services are reasonable and necessary.

Audit-proofing principle: For 90792, the payer should be able to answer three questions from your note alone: (1) Why was a psychiatric diagnostic evaluation medically necessary now? (2) What diagnostic conclusions were reached and what is the plan? (3) What medical-services work was performed that supports 90792 rather than 90791?

7. Real-World Scenarios and Coding Logic

Scenario 1: New outpatient intake with medication initiation

Setting: Outpatient clinic.

Service: Comprehensive diagnostic evaluation with psychiatric history, MSE, risk assessment, diagnostic formulation, and a medically oriented medication decision documented in the plan.

Coding logic: Report 90792 when the record supports the diagnostic evaluation and the medical-services component. The documentation should reflect the medically oriented services that differentiate 90792 from 90791.

Compliance tip: Make the medical-services element explicit (e.g., medication assessment/decision, medically relevant review) rather than implicit.

Scenario 2: Diagnostic evaluation by a non-prescribing clinician

Setting: Community mental health center.

Service: Diagnostic psychiatric evaluation including psychosocial history, MSE, diagnosis, and treatment recommendations but without medical services.

Coding logic: Report 90791 (without medical services).

Common error avoided: Billing 90792 when the service performed and documented is consistent with a non-medical diagnostic evaluation.

Scenario 3: Repeat diagnostic evaluation request within a short interval

Setting: Outpatient follow-up after a recent intake.

Service: A second “intake-style” evaluation shortly after a prior 90792 with no clear break in care or documented clinical reason for a new diagnostic evaluation.

Coding logic: This pattern is vulnerable because Medicare policy discussions generally treat diagnostic evaluations as once-at-onset services, with repeats limited to situations described in policy (e.g., significant break in care or other medically necessary contexts).

Compliance tip: If a repeat diagnostic evaluation is medically necessary, document why it is a new diagnostic evaluation rather than routine follow-up care.

Scenario 4: Telehealth psychiatric diagnostic evaluation with medical services

Setting: Telehealth (video) intake.

Service: Psychiatric diagnostic evaluation with documented medical-services component and telehealth documentation elements.

Coding logic: 90792 may be billed when telehealth requirements are met and the documentation supports the service. Federal telebehavioral billing guidance identifies 90792 as a telebehavioral billing service code under Medicare telehealth policy resources.

Documentation tip: Include modality and any payer-required telehealth elements, and ensure the medical-services component is documented clearly.