HCPCS code T1006 – Substance abuse family counseling

Key takeaways

T1006 covers family/couple counseling sessions built around one member’s substance use disorder (SUD), not individual therapy for the patient with SUD.

T-codes are Medicaid codes, so Medicare does not reimburse T1006 and commercial payers rarely cover it.

A missing HF modifier and a lapsed SUD treatment plan are the two most common denial triggers.

Provider eligibility, units, prior authorization and rates are all set by each state Medicaid program, so the state billing manual has the final word.

Pabau, the practice management platform we build, validates each claim before submission and keeps prior authorization codes attached to the appointment.

HCPCS code T1006: Definition and official descriptor

HCPCS code T1006 is defined by the Centers for Medicare and Medicaid Services (CMS) as “alcohol and/or substance abuse services, family/couple counseling.” It belongs to the HCPCS Level II T-code series, which CMS assigns to Medicaid and other state and local programs. The session addresses the substance use disorder of an identified family member. General family therapy with no SUD focus does not qualify.

What T1006 covers and what it doesn’t

T1006 applies when the family session treats the substance use disorder of an identified member, as documented in an active SUD treatment plan. The other family members in the room do not need an SUD diagnosis of their own.

In scope

• Family counseling sessions conducted as part of an SUD treatment plan for a Medicaid-enrolled patient
• Sessions where the treating provider is addressing how the family system relates to the patient’s substance use
• Sessions at certified SUD treatment facilities or qualified outpatient behavioral health settings
• Telehealth delivery where the state Medicaid plan permits (see telehealth section below)

Out of scope

• Individual therapy sessions for the person with SUD (bill H0004 or the relevant CPT psychotherapy code instead)
• General family therapy with no SUD nexus in the treatment plan
• Group therapy sessions involving multiple unrelated patients (different code applies)
• Services billed to Medicare or most commercial payers, because T1006 is a Medicaid code

T1006 vs. related HCPCS codes: How to choose

T1006 is often confused with the H-code series, which also covers SUD and behavioral health services under Medicaid. The deciding factor is the therapeutic recipient. T1006 treats the family unit, while H-codes treat the individual or a group.

An individual session for the person with SUD goes on H0004, and a clinician-led group of unrelated patients goes on H0005.

Outside Medicaid, the same family session usually goes on 90847 with the patient present, or 90846 without. The chart below runs both decisions in order.

Upcoding risk sits in one scenario. A family member sits in on what was really an individual session, and the claim goes out as T1006. The session note must confirm the family counseling purpose, name every participant and reference the SUD treatment plan.

Who can bill T1006: Eligible providers and settings

Provider eligibility for T1006 is set by each state Medicaid program. The following types are commonly authorized, though your state may impose additional credentialing or enrollment requirements.

Commonly eligible provider types

• Licensed alcohol and drug counselors (LADC, LCDC) working within a certified SUD program
• Licensed clinical social workers (LCSW) with SUD specialty credentialing
• Licensed professional counselors (LPC) enrolled in the state Medicaid SUD provider network
• Licensed marriage and family therapists (LMFT) where state Medicaid permits

The provider must be enrolled in the state Medicaid program as an SUD service provider. General behavioral health enrollment is not enough. Submitting T1006 under a provider number without SUD program enrollment is a leading cause of denials.

Accepted place of service codes

Accepted POS codes vary by state Medicaid plan. Commonly accepted settings are POS 11 (office) and POS 53 (community mental health center). POS 57 and POS 72 cover non-residential and residential substance abuse treatment facilities. Confirm accepted POS codes against your state’s T1006 billing manual before submitting.

T1006 documentation requirements

Documentation failures account for a large share of T1006 audits and post-payment recoveries. Every session note must support the medical necessity of family counseling within the SUD treatment episode. The treatment plan carries the identified member’s diagnosis, such as F10.20 for uncomplicated alcohol dependence. Structured session templates make it harder to skip a required field at the time of service.

Required documentation elements

• Active SUD treatment plan: Must identify the family member with the SUD diagnosis and the treatment goals. It also states why family counseling is part of treatment
• Session note naming all participants: List every family member present by name and relationship to the patient, because undocumented participants are an audit flag
• Start and stop times: Many state Medicaid programs require time-stamped session documentation even for per-session codes
• Provider credentials and signature: The rendering provider’s license type and NPI must appear on the note, with a supervisor’s co-signature where state law mandates supervision
• Patient consent: Consent to include family members in treatment must be documented, particularly given the additional confidentiality protections under 42 CFR Part 2

42 CFR Part 2 imposes stricter confidentiality requirements on SUD records than standard HIPAA. Your practice’s HIPAA framework needs 42 CFR Part 2 controls added for SUD documentation. That includes written consent before records are disclosed to other providers or payers.

Modifiers used with T1006

Modifiers signal to the payer which program type or delivery method applied to the session. Using the wrong modifier or omitting a required one will trigger an automatic denial in most state Medicaid systems.

HF is the most commonly required modifier for T1006, but its use is not universal. Some state Medicaid programs do not require HF and will reject it when the provider lacks a matching program enrollment. Check modifier requirements against your state Medicaid billing manual rather than appending HF by default.

Prior authorization and payer requirements for T1006

Prior authorization for T1006 depends on the state Medicaid program and, in some cases, the patient’s managed care organization (MCO). Some states authorize a set number of family counseling sessions per treatment episode without a separate PA request. Others require PA for every block of sessions.

• States with open authorization: Some Medicaid programs allow a fixed number of T1006 sessions without prior authorization, commonly 6 to 12 per year. The patient still needs an active SUD treatment plan on file
• MCO-managed Medicaid: Patients in Medicaid managed care are often subject to their MCO’s PA requirements, which may differ from the state fee-for-service rules
• PA initiation: A PA request typically includes the SUD diagnosis codes, the treatment plan and the expected session frequency. It also carries the provider’s rationale for involving the family
• Session limits: PA approvals commonly authorize 4 to 12 sessions per period, with the number set by payer and clinical criteria

Confirm PA requirements with the patient’s own Medicaid plan as well as the state Medicaid agency, because MCO contracts vary. A missing PA is one of the hardest denials to overturn, since the service was delivered before authorization existed.

Common reasons HCPCS code T1006 claims are denied

T1006 denials cluster around a small set of repeatable errors. Track them by claim adjustment reason code (CARC) and remittance advice remark code (RARC) to see which one hits your practice most. Our guide to reading denial codes explains each code family.

How to appeal a denied T1006 claim

When a T1006 claim is denied, read the CARC and RARC on the remittance advice to find the specific reason. A standard medical appeal form keeps the request and its attachments in one packet. Then follow these steps.

1. Identify the denial code: Log the CARC and RARC from the ERA or paper remittance. The code names what the payer rejected, such as a missing modifier, the wrong provider, thin documentation, or a missing authorization.
2. Gather supporting documentation: Pull the signed treatment plan, the session note naming all participants, the provider enrollment confirmation, and any PA approval letters.
3. Prepare a letter of medical necessity: Explain why family counseling was clinically indicated as part of the patient’s SUD treatment episode. Reference the DSM diagnosis, the treatment plan goals, and how the family sessions supported them.
4. Submit within the appeal window: Deadlines are commonly 60 to 90 days for managed care appeals, and some fee-for-service claim windows are shorter. Missing the window makes the denial unappealable, so check your state’s timelines.

Log each corrected claim against its original denial reason. A pattern across several claims usually points to one fix upstream, such as an enrollment record, a modifier rule or a note template.

Reimbursement rates for T1006

T1006 reimbursement is set by each state Medicaid fee schedule. Rates vary widely across states and are updated annually. The figures below are illustrative only, so verify current rates with your state Medicaid agency or fee schedule portal before budgeting.

These ranges are illustrative. Medicare does not reimburse T1006. Commercial payers rarely cover T-codes, though some MCO behavioral health carve-outs include T1006, so verify with the specific plan. Always pull the current rate from your state’s official Medicaid fee schedule portal.

Billing T1006 for telehealth services

Many states now permit T1006 family counseling by telehealth under expanded Medicaid telehealth parity policies. Billing it differs from in-person delivery in four ways.

• Modifier: Append modifier 95 (synchronous telehealth via interactive audio and video), or GT where an older state Medicaid plan still requires it
• Place of service code: Use POS 10 when the patient joins from home, and POS 02 when they join from anywhere else
• Documentation of technology: Some state Medicaid plans require the note to name the platform and confirm it meets minimum security requirements. Audio-only sessions may not qualify in every state
• State parity confirmation: Not every state extends telehealth parity to SUD family counseling, so confirm your state Medicaid plan covers T1006 by telehealth before billing

Telehealth billing errors for T1006 usually involve the wrong POS code (POS 11 instead of POS 02) or a missing telehealth modifier. Both trigger automatic denials that need a corrected claim rather than an appeal. Record the POS and delivery mode when the session is booked, so the claim inherits them.

How Pabau keeps T1006 claims clean before Medicaid sees them

Most SUD programs bill T1006 from three places. The session note sits in the EHR, the authorization number sits in an email, and the claim gets keyed into a clearinghouse portal. Every handoff is a chance to drop a modifier, a participant name or the PA code.

Pabau runs those steps in one record. Each prior authorization is stored as a case, and its code follows the booked session onto the claim. Pabau’s claims software for billing teams opens the claim pre-filled from the invoice and validates it for missing or invalid details. In the US, the claim then goes to Claim.MD.

When a claim comes back rejected, Pabau flags it as needing action and shows the reason. Your team fixes the modifier or the note while the session is still fresh, and payments settle from the ERA file.

Submit clean T1006 claims the first time

Pabau validates each claim before it reaches your clearinghouse and keeps prior authorization codes attached to every booked session. Your billing team corrects errors before Medicaid sees them.

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Conclusion

T1006 pays reliably once three facts are settled before the first session. The payer is state Medicaid, the provider is enrolled as an SUD program, and the family session sits inside an active treatment plan. Get those right and most remaining denials are paperwork you can correct.

Start with your state Medicaid billing manual, then build the HF modifier, the POS rules and the session limits into your note template. The trade-off is a few minutes of setup per program against weeks of appeals later. If you are still learning the wider claim cycle, our guide to medical billing basics covers each stage.

Book a demo to see how Pabau carries the authorization, the note and the modifier onto every T1006 claim.

Continue your research

Billing an individual SUD session instead? HCPCS code H0004 covers the per-15-minute counseling code for the patient with SUD.

Need the CPT route for a non-Medicaid payer? CPT code 90846 explains family psychotherapy billed without the patient present.

Coordinating services rather than counseling? HCPCS code H0006 walks through alcohol and drug case management billing.

Waiting on a Medicaid authorization? The prior authorization process breaks down each step from request to approval.

Want to understand denial management more broadly? Denial management in healthcare breaks down how to build a systematic denial tracking and appeals process.

Frequently asked questions