Substance Abuse Billing Services | SUD & Addiction Treatment RCM

Your IOP claims are getting denied at 20% and your UR team is losing three out of ten concurrent reviews, and you already know neither number is the biller’s fault alone. SUD billing breaks where general medical billing works: case-rate carve-outs, per-diem boundaries, 42 CFR Part 2 consent walls, and payers who treat every level-of-care day as negotiable. Revenant Care runs the full SUD revenue cycle with BH-native staff, concurrent review experience, and US account managers who talk to your clinical team in English your UR director actually uses.

We are not a generalist billing company that added a behavioral health line. We bill SUD, ABA, and mental health exclusively, and we structure our teams around the payer behavior that defines each one.

Levels of Care We Bill

SUD reimbursement collapses when billers treat levels of care interchangeably. We map each LOC to its code set, revenue code, and payer-specific authorization mechanics.

Detox (ASAM 3.7 / 4.0)

Billed as H0010 (sub-acute) or H0011 (acute medically managed), revenue codes 0126 / 0116. Typical per-diem contracts require daily clinical justification. We track authorization day-counts against actual length of stay and flag variances before they become denials.

Residential Treatment (RTC, ASAM 3.5)

H2036 per diem or H0018 when contracted at a bundled rate, revenue code 1002. RTC is where payer LOC downgrades hit hardest. Anthem and UHC routinely step members down to PHP by day 7-10 if clinical notes do not demonstrate continuing medical necessity under ASAM criteria.

Partial Hospitalization (PHP, ASAM 2.5)

H0035 or S0201 depending on contract, revenue code 0912 / 0913. Most PHP contracts require a minimum of 20 hours per week documented. We audit attendance logs against billed units before submission.

Intensive Outpatient (IOP, ASAM 2.1)

H0015 or S9480 per diem, revenue code 0906. IOP denial rates industry-wide sit between 15 and 25 percent, driven mostly by concurrent review losses, group attendance gaps, and documentation that does not match the billed unit count.

Outpatient (OP, ASAM 1.0)

H0004 individual, H0005 group, 90791/90792 for assessments, 90834/90837 for therapy. Commercial payers routinely require separate prior authorization for OP medication management versus therapy. We handle both tracks.

Billing Codes We Work Every Day

This is the code inventory we process across our SUD book. No generalist can match this without rebuilding their training stack.

• H0001 — Alcohol/drug assessment
• H0004 — Individual counseling, per 15 min
• H0005 — Group counseling
• H0015 — IOP, minimum 9 hrs/week
• H2036 — RTC per diem
• S9480 — IOP per diem (commercial)
• T1006 — Family/couple counseling
• T1012 — Skills training / recovery support
• H0020 — Methadone administration (OTP)
• H0048 — Drug screen, non-lab (presumptive)
• G0480-G0483 — Definitive drug testing (lab-based)

We also handle the modifier logic that trips up in-house billers: HF (SA treatment), HG (opioid addiction), U1-U9 (state Medicaid variants), and 95/GT for telehealth IOP and OP sessions.

VOB and Utilization Review Workflow

Verification and UR are where SUD revenue is made or lost. We split the workflow so your clinical team owns clinical judgment and we own the payer-facing production.

What Revenant Care handles: Full VOB within 4 business hours, including in-network vs. out-of-network benefits, deductible remaining, coinsurance, OOP max, session/day limits, and prior auth requirements. Initial authorization submission with ASAM-aligned clinical summary. Concurrent review scheduling and packet assembly. Denial tracking, appeal timelines, and peer-to-peer logistics.

What your team keeps: Clinical decision-making and ASAM determination. Medical director sign-off on peer-to-peer. Final discharge and LOC transition calls.

We do not touch clinical judgment. We pre-assemble the packet so your UR reviewer spends ten minutes on the call, not an hour building it.

Payer Mix We Manage

SUD facilities rarely have clean payer mixes. We are set up for messy ones.

• Commercial: Aetna, Cigna, Anthem BCBS (all Blues plans), UnitedHealthcare / Optum, Magellan, Beacon, Carelon
• Medicaid: Managed Medicaid plans plus state FFS, including Medicaid HCBS waivers for SUD
• Medicare: Part B for OP and methadone bundled payments (G2067-G2075)
• State block grants / SAPT: SABG-funded contracts with state-specific reporting requirements
• Self-pay: Payment plan administration, sliding fee schedules, scholarship accounting

Our US account managers coordinate directly with your admissions team to kill bad-payer admits before they become 90-day AR problems.

Case-Rate vs. Fee-for-Service Contracts

Most SUD contracts are a mix. A single facility might have a case-rate bundled deal with one Blues plan, a per-diem with Cigna, and fee-for-service with Aetna, all running concurrently.

We build the charge master and billing rules to match each contract. Case-rate contracts require episode tracking, readmission windows, and carve-out code identification so you do not leave the separately-billable codes (labs, medical services, detox step-ups) inside the bundle. Fee-for-service contracts need line-item defense and aggressive denial management. We do both, and our revenue cycle management process flags contract drift when a payer starts paying below contracted rate.

Compliance Documentation

SUD compliance is not optional, and it is not the same as general medical compliance.

• The Joint Commission (TJC) BHC accreditation — We align documentation and billing timelines to TJC standards so survey prep does not require a records clean-up sprint
• CARF accreditation — Outcomes reporting and person-served records handled without disrupting billing flow
• State licensure — LOC-specific documentation aligned to state rules (California DHCS, Florida DCF, Texas HHSC, and others)
• 42 CFR Part 2 — Every staff member on your account is trained on Part 2 confidentiality before touching a single claim. Consent forms, redisclosure language, and payer communication are all Part 2 compliant

If your current biller asks “what’s 42 CFR Part 2,” that is your answer about whether they should be billing SUD.

Denial Patterns and How We Appeal

Four denial patterns drive roughly 70 percent of SUD write-offs. Here is how we handle each.

Medical Necessity Denials

Most common on RTC and PHP. Appeal with ASAM-dimension-specific clinical narrative, prior episode history, and failed-lower-LOC documentation. We template the appeal by payer so turnaround is 48 hours, not two weeks.

Concurrent Review / LOC Downgrades

Payer moves a patient from RTC to PHP or PHP to IOP mid-stay. Industry-wide these hit above 30 percent on extended stays. We file expedited appeals within the payer-specific window (often 24-72 hours) and coordinate peer-to-peer before the downgrade lands in the claim.

Authorization Mismatch

Billed units exceed authorized units, or dates of service fall outside the auth window. We catch these pre-submission via a 100 percent auth-match audit on every claim.

Documentation Insufficiency

Group notes missing attendance, individual notes missing time stamps, treatment plan not updated. We send a weekly documentation gap report to your clinical director so the fix is upstream, not a downstream appeal.

Why Revenant Care for SUD Billing

• Behavioral health native. We do not bill orthopedics on Monday and SUD on Tuesday. Every coder, AR rep, and UR coordinator on your account works behavioral health exclusively.
• Concurrent review expertise. Our UR staff have handled thousands of concurrent reviews with Optum, Anthem, Magellan, and Beacon. They know payer-specific trigger language.
• 42 CFR Part 2 trained staff. Full Part 2 training before account assignment, not a checkbox at onboarding.
• US account manager + offshore production. Your AM sits in the US and picks up the phone. Production runs offshore at 40-60 percent lower cost than domestic-only shops. You get responsiveness and margin.
• Focused book. We bill SUD, ABA, and mental health. That is it.

FAQ

Q: Do you bill all levels of SUD care?
Yes. Detox (H0010/H0011), residential (H2036), PHP (H0035/S0201), IOP (H0015/S9480), and outpatient (H0004/H0005) across commercial, Medicaid, and Medicare payers.

Q: Are your staff trained on 42 CFR Part 2?
Yes. Every team member assigned to an SUD account completes 42 CFR Part 2 training before handling any claim. Consent forms, redisclosure protocols, and payer communication follow Part 2 requirements.

Q: Do you handle concurrent utilization reviews?
Yes. We assemble the UR packet, schedule the review, track payer-specific timelines, and coordinate peer-to-peer when needed. Your clinical team owns the clinical decision; we own the production.

Q: How do you handle case-rate vs. fee-for-service contracts?
We configure the charge master per contract. Case-rate contracts are tracked by episode with carve-out codes identified; fee-for-service contracts get line-item defense and denial management.

Q: What is the offshore-onshore split?
Your account manager is US-based and owns client communication, escalations, and payer relationships. Production runs from our offshore team.

Get a Free 30-Day Denial Audit for Your SUD Practice

Send us 30 days of denied claims. We will come back with the denial categories, the dollar exposure, and the specific payer behaviors driving your write-offs. No sales deck, no long discovery call, just the numbers. If the audit is useful, we talk. If not, you keep the report.

Request your 30-day denial audit.

Related services and pages

Revenant Care covers the full specialty stack. If your organization operates multiple service lines, your RCM partner should too.

• Mental Health Billing — Most SUD programs also treat co-occurring mental health — we bill both.
• Physician Group Billing — For MAT-prescribing physician groups and buprenorphine clinics.
• Technology Platform — ASAM level-of-care routing, OON single-case agreement tracking, and UR escalation.
• Provider Credentialing — DEA X-waiver (now removed), SAMHSA OTP certification, and state Medicaid enrollment.
• Revenue Cycle Management — Detox, residential, PHP, IOP, and OTP end-to-end billing.