CPT 90791 vs 90792 — 2026 Billing Guide

90791 — Psychiatric Diagnostic Evaluation (Non-Medical)

• Non-physician clinicians (LCSW, LMFT, LPC, psychologist)
• Non-medical assessment
• 60-90 minute session typical
• Once per patient per provider (per episode of care)

90792 — Psychiatric Diagnostic Evaluation with Medical Services

• Physicians + PMHNPs only
• Includes medical component + rx evaluation
• 60-90 minute session
• Higher reimbursement than 90791

Common Denial Reasons

1. Wrong provider type billing wrong code
2. Repeat 90791 without medical necessity (typically not covered)
3. Missing evaluation documentation
4. Wrong place of service

Mental Health Billing

– KD, Revenant Care