HCPCS H0035: Mental Health Partial Hospitalization, Less Than 24 Hours
HCPCS Level II code H0035 designates mental health partial hospitalization services delivered for less than 24 hours and is used to bill structured, intensive outpatient behavioral health treatment. The code is important nationally as partial hospitalization programs serve as a middle-intensity option between outpatient psychotherapy and inpatient admission, supporting care transitions and crisis stabilization. Major national payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will learn what H0035 represents in clinical and billing terms, typical sites of service, and its relationship to related psychotherapy and behavioral health day treatment services. The summary also outlines common clinical contexts where partial hospitalization is used, including stabilization of mood, psychotic, and substance-related disorders that require daily structured treatment without 24-hour inpatient care. Additionally, the publication reviews payer coverage patterns, coding guidance implications, and comparisons to related codes for therapy and day treatment to help billing and compliance teams identify where H0035 fits within a continuum of mental health services.
Data not available in the input for specific national utilization benchmarks and detailed payer reimbursement rates.
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Billing Code Overview
HCPCS Level II code H0035 represents mental health partial hospitalization, treatment, less than 24 hours. This service type denotes structured, intensive mental health treatment provided on a partial hospitalization basis for periods that are shorter than a full 24-hour day program. The typical site of service is a partial hospitalization program (PHP) or outpatient behavioral health facility where patients receive coordinated therapeutic services without full inpatient admission.
National Reimbursement Benchmarks
National commercial reimbursement for HCPCS H0035 centers around BUCA’s average commercial rate of $297.10, with individual payer means varying substantially. Cigna’s mean is the highest at $457.30 while Blue Cross Blue Shield averages $333.30 and Aetna $190.50; UnitedHealth Group is notably lower with a mean of $98.30. This spread highlights meaningful differences in payer willingness to reimburse for this service across the commercial market.
Examining dispersion using the interquartile range (P75 minus P25) reveals where rates are most and least consistent: Aetna’s IQR is $146.00 (P75 $268.00 minus P25 $122.00), Blue Cross Blue Shield’s IQR is $165.40 (P75 $430.30 minus P25 $264.90), BUCA’s IQR is $121.80 (P75 $356.30 minus P25 $234.50), Cigna’s IQR is $0.00 (P75 $426.90 minus P25 $426.90) indicating a tightly clustered set of values, and UnitedHealth Group’s IQR is $46.50 (P75 $78.00 minus P25 $32.50). Thus Blue Cross Blue Shield shows the widest dispersion while Cigna is the tightest.