HCPCS
H0002 — Behavioral health screening to determine eligibility for admission to treatment program
Alcohol and/or drug screenin
Alcohol, drug abuse, and mental-health services
H0001 — Alcohol and/or drug assessment
HCPCS code H0001 is used on U.S. medical bills for alcohol, drug abuse, and mental-health services: Alcohol and/or drug assessment.
- Typical setting: Outpatient or community
- National avg charge (illustrative): Often state-Medicaid priced — check your plan's allowed amount.
- Most-disputed reason: Session-length unit overstated
What it means
What H0001 actually means
Alcohol and/or drug assessment.
The official CMS HCPCS Level II descriptor for this code is shown above. If the description on your bill does not match the service you actually received, that is a reason to ask for the itemized bill and dispute the line.
Common errors with this code
What goes wrong on real bills.
Most bills that look correct still contain at least one of these issues. Up to 49% of medical bills contain errors (CFPB).
- Quantity or units of service that exceed what the medical record supports.
- Duplicate billing on the same date of service.
- Missing or incorrect modifier (e.g., JW for drug waste, RT/LT for sides).
- Session-length unit overstated without supporting documentation.
If you see H0001 on your bill
Three steps before paying.
1. Get the itemized bill. If your statement only shows a summary, request the CPT-level itemized bill before paying. Generate the request language →
2. Cross-check against the EOB. Compare what your insurer's Explanation of Benefits says you owe versus what the hospital is asking. They disagree more often than people think. Read the bill-vs-EOB guide →
3. Run a free Bill Scan. Upload the bill (and EOB if you have it) and BillBusted will flag the most likely issues with this specific code in your specific state. Run free scan →
Related codes
Other codes in this category.
People who land on H0001 often also see these adjacent codes on the same bill.
HCPCS
H0003 — Alcohol and/or drug screening; laboratory analysis of specimens for presence of alcohol and/or drugs
Alcohol and/or drug screenin
HCPCS
H0005 — Alcohol and/or drug services; group counseling by a clinician
Alcohol and/or drug services
HCPCS
H0007 — Alcohol and/or drug services; crisis intervention (outpatient)
Alcohol and/or drug services
Related BillBusted guides
Plain-English reads if you see H0001 on a bill.
H0001 FAQ
Plain-English answers.
What is H0001 used for on a medical bill?
HCPCS code H0001 is used on medical bills for alcohol, drug abuse, and mental-health services: Alcohol and/or drug assessment. Up to 49% of medical bills contain at least one error (CFPB, 2023), and codes in this category most often get flagged for session-length unit overstated. If you see H0001 on your bill, request the itemized statement and compare the units, date of service, and description to your Explanation of Benefits before paying.
How much should H0001 cost?
How much H0001 should cost depends on your payer and region. Up to 49% of medical bills contain at least one error (CFPB, 2023), and pricing for this HCPCS code is set by Medicare fee schedules for Medicare claims and by negotiated allowed amounts for commercial plans. Check the Medicare fee-schedule lookup tool, your insurer's member portal, or run a free BillBusted scan to compare your charge against typical allowed amounts.
Can I dispute a H0001 charge on my medical bill?
Yes, you can dispute a H0001 charge on your medical bill if the units, modifier, date of service, or coverage doesn't match the medical record or your insurance benefits. About 73.7% of patients who actually dispute a medical bill receive a correction (JAMA Health Forum, 2024). Request the itemized bill, compare to your EOB, and use BillBusted's Resolution Pack to draft the dispute letter if needed.
Don't pay H0001 blindly.
The free scan tells you in under 60 seconds whether this charge looks reasonable for your situation.