Psychiatric evaluation ICD-10 billing requires pairing the correct CPT codes for psychiatric evaluation — primarily CPT 90791 (diagnostic evaluation without medical services) or CPT 90792 (with medical services) — with accurate ICD-10 codes such as F32.9 (major depressive disorder), F41.1 (generalized anxiety disorder), or F20.9 (schizophrenia). Proper psychiatric documentation requirements, payer-specific mental health billing guidelines, […]