The 90791 code is used for psychiatric diagnostic evaluations without medical services. It was created in 2013, along with 90792, to replace the former psychiatric diagnostic evaluation codes 90801 and 90802.
According to the CPT manual, 90791 is an “integrated biopsychosocial assessment, including history, mental status, and recommendations.” The manual goes on to say that the evaluation may include “communication with family or other sources and review and ordering of diagnostic studies.”
In general, the code can be used by psychiatrists, clinical psychologists, licensed professional counselors, licensed clinical social workers, and licensed marriage and family therapists. However, when billing to Medicare and Medicaid, certain states may not allow reimbursement for non-psychiatrists, so be sure to check your state’s laws first.
Comparing 90791 and 90792
There’s one major difference between 90791 and 90792: the use of medical services.
Whereas both codes are used for psychiatric diagnostic evaluations, 90791 can’t include medical services and 90792 can. Medical services may consist of any medical activity, such as writing prescriptions, performing physical exams, and modifying psychiatric treatment.
You can bill 90791 and 90792 in conjunction with theinteractive complexity code (90785), but can't bill both codeson the same day as psychotherapy or E/M (evaluation and management) service performed by the same individual for the same patient.
Billing 90791 with 90792
You can bill 90791 and 90792 on the same day if:
The 90791 assessment is completed by a clinician (like a social worker) and a 90792 assessment is completed by a psychiatrist
It aligns with the payer policy
If you bill both codes on the same day, though, it’s possible the payer will question why two clinicians did an initial evaluation and may not be willing to reimburse for both codes.
To possibly get around this, you could have the clinician bill for 90791 and the psychiatrist bill using the E/M consult codes (99241-99245). You could also have the psychiatrist use the initial hospital care E/M codes (99221-99225), which would cover both the consult and initial psychiatric evaluation, but that requires the patient being admitted to the inpatient psychiatric service.
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* The content of this post is intended to serve as general advice and information. It is not to be taken as legal advice and may not account for all rules and regulations in every jurisdiction. For legal advice, please contact an attorney.