Codes

F43.10 is the ICD-10 code for PTSD, unspecified. Learn when to use it over F43.11 or F43.12, documentation tips, and how to avoid denials in psychiatry billing.

Z87.893 is the new ICD-10-CM code for personal history of gender detransition, effective October 1, 2026. See when to report it and how it fits with F64.A.

F31.9 is the ICD-10 code for bipolar disorder, unspecified. Learn when to use it, how it pairs with psychiatry CPT codes, and how to avoid denials.

CPT code 90785 reports interactive complexity in psychotherapy. Learn the four qualifying factors, compatible codes, and the documentation that prevents denials.

CPT 90791 billing guidelines for psychiatric evaluations. 2026 reimbursement rates, documentation rules, 90791 vs 90792, and how to avoid common denials.

F32.9 is the ICD-10 code for major depressive disorder, single episode, unspecified. Learn Excludes1 rules, CPT pairings, and how to prevent 2026 denials.

Bill CPT 96127 for brief emotional and behavioral assessments like the PHQ-9 and GAD-7. Learn unit limits, modifiers 25 and 59, and documentation rules.

Bill CPT 90847 for family psychotherapy with the patient present. Learn 90846 vs 90847, the time rule, same-day billing with 90837, and documentation.

Bill CPT 90837 the right way. Learn the 53-minute rule, documentation requirements, 2026 reimbursement, telehealth modifier 95, and how to avoid audits.

Bill CPT 90836 for a 45-minute psychotherapy add-on to an E/M service. Learn the add-on rule, 90833 vs 90836, eligible prescribers, and documentation.