MedicaidReimbursementMedium impact
Reimbursement for Comprehensive Substance Abuse Assessment
Maryland Medicaid·MD · Psychiatry, Family Medicine, Internal Medicine·Substance Use Disorder
Effective date
Jun 25, 1999
We identified it
Jun 20, 2026
Summary
Maryland Medicaid establishes reimbursement for Comprehensive Substance Abuse Assessment (CSAA) at $50.00 using procedure code W3901. Providers can bill MCOs or fee-for-service Medicaid for qualifying assessments that meet specific criteria including use of ASI, POSIT, and ASAM tools.
Action Required
Maryland providers treating substance abuse patients should: 1) Verify ADAA certification to provide CSAA services, 2) Update billing systems to include procedure code W3901 for comprehensive substance abuse assessments, 3) Train staff on assessment criteria (ASI for age 20+, POSIT for under 20, ASAM placement criteria), 4) Establish protocols to verify patient eligibility by calling appropriate MCO contact numbers listed in policy before billing, 5) Use HCFA 1500 forms for billing at $50.00 rate.