CPT Code 90792: 2026 Billing and Documentation Guide. What Is CPT Code 90792?

CPT code 90792 reports a psychiatric diagnostic evaluation with medical services. It combines a comprehensive psychiatric assessment with clinically indicated medical evaluation, such as medication assessment, physical examination elements, or diagnostic testing.

Physicians and nonphysician practitioners with prescribing authority (NP, PA, CNS) may report this code when the documented encounter supports its requirements. Accurate billing depends on medical necessity, provider eligibility, appropriate diagnosis coding, and compliance with payer restrictions. This guide explains CPT 90792 documentation, frequency, modifiers, reimbursement, and differences from related psychiatric codes.

Medical Services Included in CPT 90792

CPT 90792 covers a psychiatric diagnostic evaluation that incorporates relevant medical assessment and treatment planning.

The service generally includes:

• Psychiatric and medical history
• Presenting symptoms and mental status examination
• Risk assessment and diagnostic formulation
• Clinically indicated medication evaluation
• Relevant physical examination or diagnostic studies
• Initial treatment planning and follow-up recommendations

Not every encounter requires a physical examination, prescription, or laboratory test. However, documentation must establish that appropriate medical services were performed.

A clinician's prescribing authority alone does not justify reporting 90792.

Eligible Providers and Clinical Documentation

CPT 90792 may be reported by psychiatrists, psychiatric-mental health nurse practitioners (PMHNPs), physician assistants, and other qualified medical professionals when permitted by their scope of practice and payer policies.Clinical psychologists, LCSWs, LPCs, MFTs and MHCs cannot report 90792; they use 90791.

Practices must verify rendering-provider credentials, enrollment, and applicable supervision requirements before submission.

Documentation should establish the medical necessity of the evaluation through:

1. Clinical history: Presenting concerns, psychiatric symptoms, previous treatment, and relevant medical history.
2. Mental status and risk assessment: Findings supporting the clinician's diagnostic decisions.
3. Diagnostic impression: A supported diagnosis or working assessment.
4. Medical services: Medication review, examination findings, diagnostic workup, or other relevant medical activities actually performed.
5. Treatment plan: Recommended interventions, follow-up, referrals, and safety measures when appropriate.

Records must also meet applicable authentication and documentation requirements. A standardized template alone does not establish medical necessity.

Medical Necessity, Diagnosis Coding, and Frequency

CPT 90792 requires a clinically supported psychiatric diagnostic evaluation with medical services. ICD-10-CM diagnosis selection must reflect the documented condition and applicable payer coverage policy.

Medicare Administrative Contractors (MACs) may publish jurisdiction-specific diagnosis lists. For example, CMS Billing and Coding Article A57520 addresses covered diagnoses under its applicable contractor policy; it should not be treated as a nationwide diagnosis list.

CPT 90792 is not time-based. Its descriptor establishes no specific minimum or maximum session duration, although documenting actual time may be appropriate under payer requirements.

The evaluation is generally reported at the beginning of a psychiatric treatment episode. A repeat evaluation may be supported by:

• A significant change in mental status
• Psychiatric hospitalization or readmission
• An extended interruption in treatment
• A new diagnostic question requiring reassessment

Medicare contractor Article A57480 discusses these circumstances, including an approximately six-month treatment interruption. This threshold is contractor-specific rather than a universal billing rule.

Repeat claims require documented medical necessity and compliance with the applicable payer's frequency requirements.

Modifiers, Interactive Complexity, and Same-Day Billing

CPT 90792 does not have a universally required provider-designation modifier under Medicare. State Medicaid programs and commercial insurers may require additional modifiers based on the rendering provider or service circumstances.

Interactive complexity: CPT 90785 is an add-on code, not a modifier. It may be reported with 90792 when qualifying communication difficulties are documented and payer requirements are met. Routine family participation alone does not automatically support this add-on.

Telehealth: Medicare permanently allows behavioral telehealth in the patient's home, and the in-person visit requirement is waived through December 31, 2027. Use POS 10 when the patient is at home (paid at the non-facility rate) and POS 02 when the patient is elsewhere (paid at the facility rate). Audio-only requires modifier 93 and is allowed only when the provider can use video but the patient can't or won't consent to it.

Same-day restrictions: The 2026 CMS NCCI Policy Manual (Chapter XI, Section, rev. 1/1/2026) prohibits separately reporting E/M codes 99202–99215 with psychiatric diagnostic evaluation codes 90791 or 90792. It also restricts separate reporting of these diagnostic evaluations with psychotherapy codes on the same date of service.

Modifiers cannot be used merely to bypass established coding restrictions.

CPT 90792 vs. 90791 and Office E/M Codes

The appropriate code depends on the clinical services performed rather than provider credentials alone.

CPT code	Service	Coding distinction
90791	Psychiatric diagnostic evaluation	Excludes medical E/M services
90792	Psychiatric diagnostic evaluation with medical services	Includes medical evaluation
99202–99205	New-patient office E/M	Selected using applicable MDM or time requirements
99211–99215	Established-patient office E/M	Used for qualifying medical follow-up visits

For example, a psychiatrist completing a comprehensive psychiatric assessment that includes clinically indicated medical evaluation may report 90792.

When the encounter primarily involves ongoing medication management rather than a comprehensive diagnostic evaluation, an appropriate office E/M code may better represent the service.

Both codes should not be reported for the same evaluation.

CPT 90792 Reimbursement and Claim Denial Prevention

CPT 90792 reimbursement depends on the payer, geographic locality, provider category, and place of service.

Medicare payment amounts are available through the CMS Physician Fee Schedule. Eligible nurse practitioners and physician assistants generally receive 85% of the applicable physician fee schedule amount when Medicare's standard NPP payment rules apply.

Medicaid and commercial reimbursement must be verified against current payer fee schedules and provider contracts.

Before submitting CPT 90792 claims, practices should review these potential errors:

• Missing medical component: Confirm that the record describes the medical services supporting 90792.
• Incorrect diagnosis coding: Validate ICD-10-CM selection against clinical documentation and applicable coverage policies.
• Duplicate reporting: Check NCCI restrictions before billing additional E/M or psychotherapy services.
• Unsupported repeat evaluation: Verify frequency limits and document the reason for reassessment.
• Provider or modifier errors: Confirm enrollment, authorization where required, and telehealth reporting instructions.

Addressing these issues before submission helps reduce preventable billing discrepancies and supports accurate payment processing.

BillingFreedom Support for Psychiatric Evaluation Claims

Accurate CPT 90792 reporting requires careful review of medical documentation, provider eligibility, and payer requirements. BillingFreedom's psychiatry billing services support psychiatrists and PMHNPs with coding reviews, claims submission, payment follow-up, and denial management to help maintain efficient revenue cycle operations.

FAQ's

Can a psychologist bill 90792?

No. 90792 requires a provider with medical and prescribing scope.

Can 90792 and 99214 be billed on the same day?

No, not by the same provider.

Is 90792 a time-based code?

No. Its descriptor has no minimum or maximum time.

Can 90792 be billed via telehealth?

Yes. Use POS 10 or 02 and the modifiers the payer requires. 

Official References

• CMS 2026 NCCI Policy Manual, Chapter XI
• CMS Billing and Coding Article A57520
• CMS Psychiatry and Psychology Services, Article A57480
• CMS Medicare Physician Fee Schedule
• CMS Medicare Telehealth Guidance