HCPCS Level II code H0004 denotes behavioral health counseling and therapy billed in 15-minute units and is widely used across outpatient behavioral health settings. This code enables providers to document time-based psychotherapy and counseling services delivered in ambulatory clinics, community mental health centers, and other outpatient environments. Its national relevance stems from the high prevalence of mental health treatment needs and the importance of standardized time-based billing for psychotherapy services.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of payer coverage patterns, common modifier usage, and benchmarking context to understand reimbursement frameworks for time-based behavioral health services. The publication also outlines clinical context for use of the code, typical sites of service, and operational considerations for documenting 15-minute counseling increments.

The content provides a concise reference for billing staff, practice managers, and policy analysts seeking clarity on the role of H0004 in outpatient behavioral health billing. Data not available in the input is noted where applicable, and the focus remains on national-level implications rather than state-specific policy.