Can a Psychiatrist Bill 90792 Again for a Returning Patient?

Distinguish a diagnostic evaluation from ongoing medication care

90791 describes a psychiatric diagnostic evaluation without medical services; 90792 includes medical services. Neither is a general label for every long psychiatric appointment. For ongoing medication evaluation and management, review the appropriate E/M pathway and documentation instead of automatically repeating the diagnostic code.

First Coast’s Medicare article A57520 recognizes that a physician or qualified nonphysician practitioner performing a psychiatric diagnostic evaluation with medical assessment may use 90792 or an E/M code. This is local Medicare guidance for its jurisdiction, not a promise that every payer accepts the same approach.

Read the payer’s clock correctly

BCBS Illinois policy CPCP051, effective December 22, 2025, permits 90791/90792 at treatment onset and repeat diagnostic evaluation after an extended break defined as at least six months since the patient was last seen or treated for the psychiatric condition. The reference point is the last treatment, not the previous intake.

That is a specific payer example. Do not treat six months as a national rule, or assume that satisfying a time interval alone establishes the service’s medical necessity. Keep the member’s actual plan, applicable contract and policy version with your review.

A fictional example: the intake is old, the treatment is recent

A psychiatrist evaluates a patient in February, continues medication-management visits through June, and sees the patient again in August. The August appointment is labeled “restart intake.” Counting February to August suggests six months; counting from the last treatment in June gives about two.

For a claim subject to the cited BCBSIL policy, the February date does not satisfy the extended-break test. The clinician must identify and document the actual August service. Staff should not substitute an E/M code solely to make a denial disappear; any corrected claim needs record support and must follow the payer’s process.

Resolve these questions before submission

• What were the prior diagnostic-evaluation dates and the last treatment date?
• Which policy applies to this patient’s plan and date of service?
• Why is another diagnostic evaluation needed now?
• Does the completed record support 90792 or a different service?
• Have same-day edits and any authorization requirements been checked?
• Who will resolve a documentation or code-selection question?

Build a return-visit review into scheduling

A practical scheduling note can flag “returning patient—service review needed” without preselecting the code. Route the clinical question to the psychiatrist and the policy question to billing. Keep the final decision with the claim record so a later payer request does not require reconstructing the history.