Crisis Behavioral Health Services Billing Codes

Crisis Services Billing Overview

Crisis behavioral health services cover emergency psychiatric evaluations, mobile crisis team interventions, crisis stabilization units, and 988 Suicide and Crisis Lifeline follow-up. CMS expanded Medicaid coverage for mobile crisis services under the American Rescue Plan Act, providing states with an enhanced federal matching rate (85%) through 2027. Crisis services use a mix of CPT, HCPCS, and revenue codes depending on the setting and payer.

Key Billing Codes

1. 90791 (Psychiatric diagnostic evaluation) — initial crisis assessment. Reimburses $150-$250. No prior auth required for emergency evaluations.
2. H0030 (Behavioral health hotline service) — telephone-based crisis intervention. Reimburses $20-$50 per call under Medicaid.
3. H2011 (Crisis intervention service, per 15 minutes) — mobile crisis team interventions. Reimburses $30-$60 per unit under Medicaid.
4. S9484 (Crisis intervention mental health services, per hour) — crisis stabilization unit stays. Varies by state Medicaid plan.

Payer and Medicaid Rules

Medicaid is the primary payer for crisis services. The enhanced FMAP for mobile crisis services requires states to offer at least one mobile crisis team available 24/7 to qualify. Commercial payers cover emergency psychiatric evaluations (90791) under standard behavioral health benefits. UnitedHealthcare and Anthem cover crisis stabilization as an inpatient-alternative benefit. Medicare Part B covers 90791 without separate authorization for emergency encounters.

Common Denials

CO-50 occurs when the state Medicaid plan has not implemented mobile crisis benefits under the new FMAP provision. CO-16 flags code mismatches between HCPCS crisis codes and CPT evaluation codes. Use the correct code set for your payer. See behavioral health denial appeals and EMTALA billing rules for emergency department encounters.