90801
Here is some guidance I found helpful.
CPT code 90801, Psychiatric diagnostic interview examination:
This procedure is described as the elicitation of a complete history, establishment of tentative diagnosis, and an evaluation of the patientÕs ability and willingness to work to solve the patientÕs mental problem.
Medicare may cover this service only once per patient at the onset of each new illness, suspected illness, or a new episode of an illness.
An evaluation and management (E&M) service may be substituted for he initial interview procedure, including consultation codes (CPT 99241-99263), provided required elements of the E&M service billed are fulfilled. Consultation services require, in addition to the interview and examination, the provision of a written opinion and/or advice. Consultation codes do not include psychiatric treatment.
Using the E&M codes will also allow you to use the prolonged add-on codes when needed You will need to make sure the E&M documentation guidelines are met when determining the level, but it will offer you more flexibility in billing for what actually happened
Melanie