HCPCS H0001 reports an alcohol and/or drug assessment, used to evaluate substance use and determine treatment needs. It is common in Medicaid substance use disorder programs.
When to use H0001
Use H0001 for a substance use assessment, including administration or review of screening, to establish treatment needs. It is a Medicaid-oriented H-code distinct from CPT diagnostic evaluations.
How to bill it
Report per assessment. Billing conventions and unit definitions vary by state Medicaid program, so confirm the local manual.
Common pitfalls
- Treating H-codes like national CPT standards when states set their own rules.
- Confusing a substance use assessment (H0001) with a behavioral health screening (H0002).
Frequently asked questions
Who uses H0001?
H0001 is most often used by Medicaid substance use disorder programs; commercial payers typically use CPT evaluation codes instead.
Is H0001 time-based?
Not by the national descriptor. Unit and time rules are set by each state Medicaid program, so verify the local billing manual.