HCPCS Level II · Alcohol and drug abuse treatment services
H0035Mental health partial hospitalization, treatment, less than 24 hours
✓ Active
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About H0035
H0035 is an HCPCS Level II code in the H series (alcohol and drug abuse treatment services), describing mental health partial hospitalization, treatment, less than 24 hours.
It was added to HCPCS effective 01/01/2003.
Its Medicare coverage code is "I", meaning it is not payable by Medicare (another code or method is used).
Details
- Short description
- Mh partial hosp tx under 24h
- Date added
- 01/01/2003
- Action effective
- 01/01/2003
- BETOS
- Z2
Related H00xx codes
- H0001Alcohol and/or drug assessment
- H0002Behavioral health screening to determine eligibility for admission to treatment program
- H0003Alcohol and/or drug screening; laboratory analysis of specimens for presence of alcohol and/or drugs
- H0004Behavioral health counseling and therapy, per 15 minutes
- H0005Alcohol and/or drug services; group counseling by a clinician
- H0006Alcohol and/or drug services; case management
- H0007Alcohol and/or drug services; crisis intervention (outpatient)
- H0008Alcohol and/or drug services; sub-acute detoxification (hospital inpatient)
- H0009Alcohol and/or drug services; acute detoxification (hospital inpatient)
- H0010Alcohol and/or drug services; sub-acute detoxification (residential addiction program inpatient)
- H0011Alcohol and/or drug services; acute detoxification (residential addiction program inpatient)
- H0012Alcohol and/or drug services; sub-acute detoxification (residential addiction program outpatient)
Common questions about H0035
Is HCPCS H0035 still valid?
- Yes. H0035 is active in the CMS October 2026 HCPCS file.
Does Medicare cover H0035?
- Its coverage code is "I": it is not payable by Medicare (another code or method is used). Check the local coverage determination for your region.