How a Billing Team Reads Your Coverage
When our medical billing department runs a verification of benefits, we ask the insurer six specific questions in this order: is the level of care covered, what is the medical-necessity criterion the plan applies, what authorization is required (and how long does it take), what is the in-network rate, what is the patient's deductible status today, and what is the patient's out-of-pocket maximum. The answers compose the dollar range that appears in this calculator. Two patients with nominally identical insurance often produce different VOB results because their plan year is at different stages and their authorization standards differ — for example, ASAM Criteria versus Milliman Care Guidelines yield different decisions on the same clinical presentation.
The Six Levels of Care, by Billable Code
Cost ranges below reflect 2024–2025 paid amounts on commercial claims, audited against Medicare-equivalent benchmarks. Your facility's contracted rate may differ.
- Medical detox (HCPCS H0010, 5–7 days): $4,000–$12,000 sticker. ASAM Level 4-WM. Most plans cover after deductible; Medicaid usually full coverage with minimal copay.
- Residential (HCPCS H0019, 30 days): $15,000–$38,000 sticker. ASAM Level 3.5–3.7. In-network commercial: deductible plus 20–30% coinsurance to OOP max. Prior authorization required.
- Partial hospitalization (CPT 0913 / H0035, 20 days): $7,000–$18,000 sticker. ASAM Level 2.5. Parity-protected; commercial coverage comparable to medical PHP.
- Intensive outpatient (HCPCS H0015, 8 weeks): $3,500–$9,000 sticker. ASAM Level 2.1. Cost-effective and evidence-supported for moderate SUD.
- Standard outpatient (CPT 90832/90834/90837): $2,000–$6,000 sticker. ASAM Level 1. Most plans cover after copay.
- MAT (HCPCS J0571–J0575 buprenorphine, J1230 methadone): $1,500–$4,000 sticker for medication plus monthly E/M visits. Coverage varies; Medicaid coverage of all three FDA-approved agents has been universal since 2025.
Why Two Identical Plans Pay Different Amounts
A common confusion: two patients on the same insurer's plan, with the same employer, walking into the same residential facility, end up with different bills. The billing logic is mostly procedural. Patient A entered in February with a $3,500 deductible unmet; the facility billed $20,000; the insurer paid $13,500 after deductible and 30% coinsurance, with patient A owing $6,500. Patient B entered in October, after meeting the deductible from earlier medical care; the same $20,000 bill produced $14,000 paid by insurance and $6,000 owing — but with deductible already absorbed elsewhere, the net stack across the year is roughly $2,500 less. Patient C entered with a non-quantitative treatment-limit denial that took two weeks to appeal; the appeal was successful and full coverage applied, but patient C's admission was delayed.
Parity Rule 2024 — What Changed for Billing Teams
Practically speaking, the 2024 Mental Health Parity and Addiction Equity Act final rule shifted the documentation burden onto insurers. Before, our team filed appeals citing "comparable coverage" arguments and won perhaps a quarter of the time. Now, insurers must produce the comparative analysis themselves — and several of the largest plans have proactively loosened authorization standards on substance-use admissions to avoid the documentation friction. The win rate on appeals has roughly doubled since the rule took effect; the time to authorization on initial requests has shortened by about a third. None of this is uniform; some plans remain restrictive, and the appeals process still takes 7–14 days for residential.
Costs Outside the Calculator's Scope
- Continuing pharmacy after discharge. A typical post-residential medication regimen — naltrexone or buprenorphine, an SSRI, occasionally a sleep aid — runs $40–$200/month in copays for twelve months on commercial plans.
- Sober-living rent. Recovery housing post-residential ranges $600–$1,500/month, typically not covered by insurance. ASAM data identifies stable housing as the strongest aftercare outcome predictor.
- Out-of-network laboratory. Toxicology and metabolic panels are routinely billed by third-party labs whose network status differs from the facility's. Surprise bills here run hundreds to low thousands.
- Family travel and missed work. Federal FMLA protects the job; state short-term disability replaces partial wages where available (CA, NY, NJ, RI, others). Elsewhere, families cover the gap.
- Telehealth follow-up. Many programs continue therapy via telehealth for 90 days post-discharge. Insurance coverage for telehealth substance-use care is now broadly comparable to in-person, but copays apply per session.
Practical Steps Before Admission
- Request a written verification of benefits. The verbal estimate from intake is not binding; the written VOB is the document the billing team will rely on if a charge is disputed later.
- Ask the facility whether your specific plan is contracted. "Accepts" your insurance is not the same as "in-network." A contracted facility has agreed to a specific rate; an out-of-network facility bills retail.
- Confirm authorization length. Initial residential authorizations average 7–14 days; the facility's UR team handles continued-stay reviews. Ask how the program responds if the insurer denies a continued-stay request.
- Check Medicaid eligibility separately. ACA-expansion thresholds covered 138% of federal poverty level by 2025. For a single adult earning under roughly $20,000, Medicaid often pays for the same treatment a commercial plan partially covers.
- Use HSA or FSA dollars. Substance-use treatment qualifies under IRS Publication 502. Pretax dollars reduce the effective price by your marginal tax rate.
- Save the parity rule citation. If a residential request is denied citing "outpatient sufficient," reference the 2024 final rule and request the insurer's non-quantitative-treatment-limit comparative analysis. Major treatment centers' UR teams will help draft the appeal.
- Ask about scholarship beds at non-profit programs. Many alumni-funded programs run quietly; admissions counselors will disclose them when asked directly.
Sources & Methodology
- Centers for Medicare and Medicaid Services. HCPCS Level II code set, 2024–2025 update. cms.gov
- American Society of Addiction Medicine. ASAM Criteria, 4th edition. Levels of care and continued-stay criteria.
- Agency for Healthcare Research and Quality. Medical Expenditure Panel Survey, 2024 release.
- Departments of Labor, Treasury, and Health and Human Services. 2024 Final Rule on the Mental Health Parity and Addiction Equity Act.
- SAMHSA. Treatment Improvement Protocol 63: Medications for Opioid Use Disorder.
- Kaiser Family Foundation. Employer Health Benefits Survey, 2025: deductibles, OOP maximums, mental-health utilization data.
This calculator approximates a reasonable out-of-pocket range. Final dollar amounts depend on your specific plan and facility. A live verification of benefits before admission supersedes any estimate produced here. Last updated April 2026. Sources: CMS HCPCS, ASAM 4e, MEPS 2024, SAMHSA TIP 63, KFF Employer Survey 2025. See our editorial policy.