HCPCS Code H0006: Alcohol and/or Drug Services

Key takeaways

HCPCS Code H0006 (Alcohol and/or Drug Services; Case Management) is a Medicaid billing code for SUD case management services.

H0006 is not covered by Medicare. It applies almost exclusively to Medicaid and certain commercial payers.

Documentation must include an individualized care plan, assessment notes, progress notes, and referral records. Missing any element is the leading cause of claim denial.

Pabau helps behavioral health practices track H0006 documentation requirements and keep records organized for audits.

HCPCS Code H0006 (Alcohol and/or Drug Services; Case Management) is a Medicaid billing code for care coordination delivered to individuals with substance use disorders. Specifically, it covers assessment, individualized care planning, referral management, and ongoing monitoring, not direct counseling or therapy.

In practice, state Medicaid programs apply the code differently, and documentation requirements are the most common source of denied claims. First, this guide covers the official code definition, covered services, eligible providers, and Medicaid payer policies. It also covers 2025 reimbursement context, documentation requirements, common billing errors, and how H0006 compares with adjacent H-series codes.

HCPCS Code H0006: Definition and code details

HCPCS Code H0006 is a Level II HCPCS code maintained by the Centers for Medicare and Medicaid Services (CMS). Specifically, it reports alcohol and/or drug services related to case management. It sits within the H-series of HCPCS Level II codes, which in turn covers alcohol and drug abuse treatment services for Medicaid programs.

Ultimately, the code covers the coordination function, not the direct clinical treatment itself. A provider billing H0006 is documenting that they organized, monitored, and linked a client to services. In other words, they are not documenting that they delivered counseling or therapy in that session.

What services does H0006 cover?

Case management under H0006 encompasses the full lifecycle of coordinating care for individuals with substance use disorders. Accordingly, the covered activities align with the CMS SUD services framework and are confirmed across multiple Medicaid billing manuals.

• Comprehensive assessment: Evaluating the client’s SUD severity, co-occurring conditions, housing, and support system to identify service needs.
• Individualized care plan development: Creating a written plan specifying treatment goals, service types, providers responsible, and timelines.
• Service coordination: Arranging and linking the client to appropriate treatment, housing, employment, medical, and social services.
• Referral management: Documenting referrals made to internal and external providers, including follow-up to confirm the client connected with those services.
• Monitoring and follow-up: Tracking the client’s progress, reassessing needs, and updating the care plan as circumstances change.
• Crisis coordination: Assisting with crisis response by connecting the client to emergency or intensive services when needed.

H0006 does not cover direct clinical counseling, group therapy, or medical detoxification. Those services use separate codes, such as H0004 for behavioral health counseling or H0005 for group counseling. As a result, billing H0006 for what is actually a counseling session is among the most frequent denial triggers.

Who can bill HCPCS Code H0006?

In practice, provider eligibility for H0006 varies by state Medicaid policy. In fact, there is no single federal standard for which license type qualifies. That said, most state programs recognize a consistent set of provider categories.

• Licensed clinical social workers (LCSW): Widely eligible across state Medicaid programs for SUD case management.
• Licensed professional counselors (LPC) and licensed mental health counselors (LMHC): Eligible in most states, sometimes with supervision requirements.
• Certified addiction counselors and case managers: Many states accept nationally certified addiction specialists (CADC, CCJP, NAADAC-recognized credentials).
• SUD treatment organizations: Medicaid-enrolled behavioral health agencies, outpatient treatment programs (OTP), and residential treatment facilities often bill H0006 under the organization’s provider number.
• Care coordinators under agency supervision: Some states allow non-licensed staff to perform and bill case management activities under a licensed clinician’s supervision. In turn, this depends on state Medicaid rules.

Always verify credentialing requirements with your specific state Medicaid agency. Indeed, billing H0006 under a provider type not recognized by your state’s program is a fast path to denial and potential recoupment. In addition. For that reason.

Solid practice management software for medical teams means every miscellaneous code carries the notes a payer will ask for.

Medicaid coverage and payer policies for H0006

H0006 is a Medicaid code. However, Medicare does not cover it. This distinction matters because practices that serve dual-eligible clients (enrolled in both Medicare and Medicaid) must bill case management through Medicaid for SUD services specifically.

Medicare exclusion

Traditional Medicare (Parts A and B) does not reimburse H-series behavioral health codes, including H0006. Some Medicare Advantage (Part C) plans may cover SUD case management through supplemental benefits, but this is plan-specific and requires pre-authorization verification. Therefore, never submit H0006 to traditional Medicare fee-for-service without confirming coverage first.

State Medicaid variation

Coverage terms, unit definitions, and prior authorization requirements differ substantially by state. Some states bundle SUD case management into a broader behavioral health carve-out managed by a specialty MCO. By contrast, others reimburse H0006 directly through their fee-for-service Medicaid program. Either way, check your state Medicaid agency’s behavioral health billing manual before submitting claims.

SAMHSA’s Treatment Improvement Protocols and federal confidentiality rules under 42 CFR Part 2 add another layer of complexity specific to SUD billing. Unlike standard HIPAA rules, 42 CFR Part 2 restricts sharing SUD treatment records without explicit patient consent, even between providers in the same system. As a result, this affects how case managers document referrals and coordinate care for billing purposes.

H0006 reimbursement rates and fee schedule 2025

H0006 reimbursement rates vary significantly by state Medicaid program. Unlike CPT codes with a published national Medicare Physician Fee Schedule, HCPCS H-series codes do not have a federal fee schedule. Instead, each state sets its own rates. Meanwhile, use the Physician Fee Schedule lookup for Medicare context and consult your state Medicaid billing manual for the applicable rate.

Because rates are state-driven, practices serving clients across state lines face the added complexity of tracking multiple fee schedules. To manage this.

Documentation requirements for H0006

Missing documentation is the primary reason H0006 claims are denied or recouped on audit. Specifically, state Medicaid auditors expect to find a specific set of elements in every client record for each billed unit. In fact, the absence of even one element can invalidate an entire claim.

• Comprehensive assessment: A dated assessment documents the client’s SUD diagnosis, functional status, social determinants, and identified needs. It must be completed before or at the time case management begins.
• Individualized care plan: A written plan signed by the case manager, and often by the client, sets out measurable goals and planned services. It also names responsible providers and a review schedule.
• Progress notes for each billed unit: A note for every session describing activities performed, duration, who was contacted, and the client’s response or status.
• Referral records: Documentation of referrals made, including the receiving provider, date of referral, and evidence of follow-up to confirm the client connected with the service.
• Supervisor signature (where required): Some states require a licensed supervisor to co-sign notes when unlicensed staff deliver case management services.
• Client consent and 42 CFR Part 2 authorization: Separate written consent is required before disclosing SUD records to any third party, including referral providers. However, standard HIPAA authorizations are not sufficient for SUD records.

Pabau’s digital forms and compliance management tools help behavioral health practices capture and store these required elements at the point of care. As a result, this reduces the missing documentation that leads to denials.

Common billing errors and how to avoid them

H0006 claim denials cluster around a predictable set of errors. Fortunately, most can be prevented with the right documentation habits and a clear understanding of where this code’s scope ends.

The 42 CFR Part 2 consent issue is frequently overlooked by practices transitioning from general behavioral health to SUD-specific case management. Indeed, standard HIPAA authorizations do not cover SUD records. Separate written consent must be obtained and documented for any record sharing, including with referral providers. Importantly, this is federal law, not a state variation.

H0006 vs related HCPCS codes

Selecting the right code from the H-series requires understanding where each one’s scope begins and ends. In practice, upcoding (billing a higher-intensity code than the service warrants) and under-coding both create problems. Related codes such as H0022 cover intervention services rather than ongoing coordination. For reference, this table shows the most commonly confused adjacent codes.

The most common source of confusion is H0006 versus T1016. T1016 is a general case management code used across multiple service types and billed in 15-minute units in most states. By contrast, H0006 is SUD-specific. Some state Medicaid programs use one code or the other exclusively, while others use both for different service categories. Either way, consult the AAPC HCPCS code lookup and your state’s behavioral health billing manual to determine which applies in your jurisdiction.

How practice management software supports H0006 billing

Code reference pages tell you what H0006 means. However, they do not help you bill it correctly across hundreds of client records without documentation errors or unit-limit mistakes. Instead.

Pabau’s practice management platform gives SUD treatment providers a structured way to handle the documentation requirements that H0006 demands. Additionally. Key capabilities relevant to H0006 billing include:

• Digital intake and care plan templates: Customizable forms capture assessment data and care plan elements in a structured format. As a result, this format maps directly to Medicaid audit requirements, and every required field must be completed before the form can be saved.
• Progress note standardization: Note templates can be configured to require duration, activity type, and contact details before a note can be saved. This eliminates incomplete notes at the point of entry rather than at audit.
• Documentation and audit-readiness support: Pabau helps practices organize H0006 documentation so missing elements are caught before a claim goes out, not after a denial.
• Compliance documentation storage: 42 CFR Part 2 consent forms and HIPAA authorizations can be stored alongside client records. Audit trails show when consent was obtained and by whom.
• Billing workflow automation: Automated alerts can flag when a client’s authorized unit count is approaching the state-imposed limit. In turn, this prevents inadvertent over-billing before a claim is submitted.

This software itself does not guarantee Medicaid compliance. Instead, clinical judgment and state-specific policy knowledge are still required. What it does is remove the friction that causes preventable billing errors. In practice, behavioral health practices that use a standardized documentation approach and structured form workflows significantly reduce the likelihood of missing required elements at audit. The practice management software also applies HIPAA-aligned security controls to keep records protected.

Related HCPCS codes

• HCPCS code H0032 — Mental Health Service Plan Development by Non-Physician
• HCPCS code H0007 — Crisis intervention billing and denial fixes
• HCPCS code H0010 — Sub-Acute Detoxification
• HCPCS code H0013 — Alcohol and drug services acute detox

Simplify H0006 documentation and compliance tracking

Pabau helps behavioral health practices capture and store H0006 documentation, including care plans, progress notes, and consent records, in one place.

Book a demo

Conclusion

H0006 claim denials are rarely about the code itself. Instead, they come from missing documentation, wrong provider type, billing to the wrong payer, or confusing case management with direct clinical services. Fortunately, each of those is preventable with the right workflows in place.

Pabau’s behavioral health practice management tools help SUD treatment providers capture the care plan, progress note, and consent documentation that Medicaid auditors look for. This documentation lives inside the clinical workflow rather than being added as a compliance afterthought. To see how Pabau handles behavioral health billing documentation, book a demo.

Continue your research

Need to bill for SUD intervention services instead of ongoing case management? HCPCS code H0022 explains how intervention billing differs from H0006 coordination.

Treating clients in a long-term residential SUD program? HCPCS code H0019 covers the billing rules for long-term residential behavioral health services.

Want a template for documenting compliance incidents? This incident report form gives behavioral health practices a structured way to log adverse events.

Frequently asked questions