Mental Health Parity Act · All major plans · 2026

Rehab Coverage by Insurance Provider

Under the Mental Health Parity and Addiction Equity Act (MHPAEA), insurance must cover substance use treatment at parity with medical care. Select your provider below to find in-network centers.

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Coverage at a glance

Major providers covered

290M+

Members across plans

MHPAEA

Federal parity law

8-35%

Typical cost share

Aetna

BlueCross BlueShield

Cigna

UnitedHealthcare

Humana

Anthem

Kaiser Permanente

TRICARE / VA

Medicaid

Medicare

Compare 10 Rehab Insurance Providers Side-by-Side

All 10 providers cover medically necessary rehab under MHPAEA. The real differences are in deductibles, cost-share, out-of-pocket maximum, and which plan types your employer offers. Here's a side-by-side of what to expect before you call member services.

Provider	Members	Deductible	Cost-share	OOP max	Verify
Aetna CVS Health	22+ million	$500-7,500	20-30%	$6,000-$18,000 per family (varies by plan)	1-855-272-4004
BlueCross BlueShield 36 independent BCBS companies	107+ million	$500-8,500	20-40%	$5,000-$17,000 per individual depending on state plan	varies by state
Cigna Cigna Corporation	17+ million	$500-7,500	20-30%	$6,500-$17,400 per individual (varies by plan)	1-800-244-6224
UnitedHealthcare UnitedHealth Group	50+ million	$500-8,000	20-40%	$4,500-$17,400 per individual, with significant plan variation	1-800-842-6329
Humana Humana Inc.	17+ million	$500-7,500	20-30%	$3,500-$8,300 per individual on Medicare Advantage; higher on commercial plans	1-800-457-4708
Anthem Elevance Health	48+ million	$500-8,000	20-40%	$5,000-$17,400 per individual depending on state plan	1-888-650-4047
Kaiser Permanente Kaiser Foundation	12+ million	$500-6,000	15-30%	$3,500-$9,100 per individual — lowest in the industry on average	1-800-464-4000
TRICARE / VA U.S. Department of Defense / VA	9.6+ million	$0-300	$0-150 per admission	$1,200 active duty family / $4,000 retirees (annual catastrophic cap)	1-877-TRICARE
Medicaid State-administered (federal matching funds)	85+ million	$0 for most	$0-20 nominal	Nominal — most Medicaid members pay no cost-share for SUD	varies by state
Medicare Centers for Medicare & Medicaid Services	65+ million	$240-1,632	20%	No cap on Original Medicare; $4,900-$8,850 on Medicare Advantage (2026)	1-800-MEDICARE

Ranges reflect typical commercial plans; your specific employer group or marketplace plan may vary. For Medicaid, cost-share is nominal or $0 in most states. Medicare cost-share varies by Part (A/B/D) and Medigap supplement. Last updated April 2026.

Coverage by Level of Care — Which Plans Need Prior Authorization?

Every plan here covers all six levels of care under MHPAEA. The variable is prior authorization — whether your plan requires clinical approval before you're admitted. Skipping a required prior auth is the single most common reason claims get denied.

Provider	Detox	Inpatient	PHP	IOP	Outpatient	MAT
Aetna	Pre-auth	Pre-auth	Pre-auth	Covered, no PA	Covered, no PA	Covered, no PA
BlueCross BlueShield	Pre-auth	Pre-auth	Varies by plan	Covered, no PA	Covered, no PA	Covered, no PA
Cigna	Pre-auth	Pre-auth	Pre-auth	Covered, no PA	Covered, no PA	Covered, no PA
UnitedHealthcare	Pre-auth	Pre-auth	Pre-auth	Covered, no PA	Covered, no PA	Covered, no PA
Humana	Pre-auth	Pre-auth	Pre-auth	Covered, no PA	Covered, no PA	Covered, no PA
Anthem	Pre-auth	Pre-auth	Pre-auth	Covered, no PA	Covered, no PA	Covered, no PA
Kaiser Permanente	Referral	Referral	Referral	Referral	Referral	Referral
TRICARE / VA	Pre-auth	Pre-auth	Pre-auth	Covered, no PA	Covered, no PA	Covered, no PA
Medicaid	Varies by state	Varies by state	Varies by state	Varies by state	Covered, no PA	Covered, no PA
Medicare	Covered, no PA	Covered, no PA	Covered, no PA	Covered, no PA	Covered, no PA	Covered, no PA

Legend: Covered, no PA Pre-auth required Referral needed Varies by state Varies by plan

Pre-auth — your rehab facility must obtain clinical approval from your insurer before admission. Most inpatient rehabs handle this for you during intake, but confirm before arriving.

Referral (Kaiser) — care flows through your Kaiser primary care provider, who refers you into Kaiser's addiction medicine and recovery services.

Varies by state (Medicaid) — each state Medicaid program sets its own prior-auth rules. Residential also depends on IMD waiver status (40+ states have waivers as of 2026).

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Quick answer: is rehab really covered?

Yes — by federal law. The Mental Health Parity and Addiction Equity Act (MHPAEA), passed in 2008 and expanded under the 2010 ACA, requires any group health plan covering 50+ employees and any ACA marketplace plan to cover SUD treatment at parity with medical/surgical care¹. This includes all 10 providers above plus Medicaid (all 50 states) and Medicare (Parts A, B, D). Parity means: same deductibles, same day limits, same prior-auth rules as you'd face for cancer or heart disease. Employers with < 50 employees are exempt — check your plan document.

What "parity" actually means for your plan

MHPAEA parity is more specific than "covered." It prohibits insurers from applying quantitative treatment limits (QTLs) or non-quantitative treatment limits (NQTLs) to SUD that are stricter than medical/surgical care²:

Insurer CANNOT

✗ Cap SUD visits lower than medical visits
✗ Require higher copays for SUD
✗ Require stricter pre-authorization for SUD
✗ Use narrower provider networks for SUD
✗ Exclude medically necessary SUD care

Insurer CAN

• Require pre-authorization (if same rule applies to surgery)
• Deny non-medically-necessary care
• Require in-network use on HMO plans
• Use evidence-based utilization review
• Terminate coverage for non-payment of premium

Red flag: if your insurer denied SUD care but approves similar-intensity medical care (e.g., approves 14-day cardiac rehab but denies 14-day SUD rehab with same clinical criteria), that's a parity violation. File a complaint with your state insurance commissioner or the federal Center for Consumer Information and Insurance Oversight (CCIIO).

In-network vs out-of-network: the 3-10× cost difference

The single biggest determinant of your out-of-pocket cost is in-network status. A 30-day residential stay that costs you $3,000 in-network can cost $25,000+ out-of-network on the same plan. Here's the breakdown:

Plan type	In-network out-of-pocket	Out-of-network	Notes
HMO	Deductible + 10-20% coinsurance	100% (no OON coverage)	Emergency only
EPO	Deductible + 15-25% coinsurance	100% (no OON coverage)	Emergency only
PPO	Deductible + 20-30%	Higher deductible + 40-50%	Out-of-network available at higher cost
POS	Deductible + 20%	Deductible + 40%	Requires PCP referral for both

Action: always call the facility AND your insurer to confirm in-network status before admission. Out-of-network billing disputes are the #1 reason patients end up with $50k+ bills post-treatment. Use our cost calculator to estimate your specific plan's out-of-pocket.

How insurance verification actually works

Insurance verification = behavioral health department calls your insurer for "benefits breakdown." Most facilities and helplines do this in under 15 minutes. Here's what they confirm:

1

Policy details

Your member ID, effective dates, policy type (HMO/PPO/EPO), employer or individual plan
2

Deductible status

Annual deductible amount AND how much you've already met this calendar year
3

Coinsurance rate

Your % share after deductible (typically 10–40%)
4

Out-of-pocket maximum

Annual cap on your total cost (reached = insurance pays 100%)
5

In-network status of facility

Is the specific facility contracted with your plan
6

Pre-authorization requirements

Whether approval is needed before admission (usually yes for inpatient)
7

Days/sessions authorized initially

How many days insurance will pay before re-review
8

Medical necessity criteria

What clinical threshold your chart needs to meet

Key tip: always request written verification (Verification of Benefits / VOB letter) before admission. Phone verbal confirmations can be disputed later. Our helpline provides written VOB at no cost.

Common insurance denials — and how to appeal

~30% of initial SUD treatment claims are denied³. Most denials are reversible on appeal — knowing the reason lets you fight it:

"Not medically necessary"

Most common denial. Fix: request your insurer's specific medical necessity criteria (e.g., ASAM criteria), have your clinician document why you meet them, submit peer-to-peer review request. Success rate on appeal: 50-70%.

"Lower level of care appropriate"

Insurer wants you at IOP not residential. Fix: document why outpatient failed or isn't safe (risky home environment, withdrawal risk, relapse history). Submit ASAM Dimension 6 assessment.

"Out of network"

If no in-network facility has appropriate capacity or specialty, request "in-network exception" based on access standard. Usually granted for pregnant women, dual diagnosis, specific specialties.

"Parity violation"

If denial is stricter than for comparable medical care, cite MHPAEA. File complaint with state DOI or federal CCIIO. Many insurers settle quickly to avoid parity investigation.

Appeal timelines: ACA plans allow internal appeal within 180 days and external review within 4 months after internal denial. Urgent appeals (for imminent treatment) must be decided within 72 hours. Don't miss these windows.

Related tools & guides

Tool

Rehab Cost Calculator

Estimate exact out-of-pocket for your insurance + program combo.

Tool

Do I Need Rehab? DSM-5 Quiz

Self-assessment to determine severity and recommended level of care.

Finance

No Insurance? 8 Ways to Pay

Medicaid, block grants, sliding scale, scholarships — full breakdown.

Frequently asked questions about insurance & rehab

Does insurance cover all 30 days of residential rehab?

Not automatically. Insurers authorize in chunks (7, 14, or 21 days initially), then require concurrent review to approve additional days. Coverage continues as long as medical necessity is documented. Most 30-day programs get full authorization in 2-3 review cycles.

What if I need to go out-of-state for treatment?

Most PPO and POS plans cover out-of-state, subject to network status. HMO plans typically don't unless emergency or in-network exception granted. If you're going out-of-state for specialty care not available locally (e.g., pregnancy-specific), request an in-network exception upfront.

Can insurance cover multiple rehab stays in a year?

Yes, if medically necessary. Some plans have lifetime limits on residential (e.g., 60–90 days total), but MHPAEA prohibits SUD-only limits if medical care has no similar limit. Post-MHPAEA plans rarely have these caps.

Does insurance cover MAT (buprenorphine, methadone)?

Yes. MAT is covered under medical benefits (not just pharmacy) under MHPAEA. Most plans cover both medication and office visits. 2018 SUPPORT Act prohibits most prior authorization for MAT in Medicaid.

Does using insurance affect my privacy at work?

No. 42 CFR Part 2 prohibits SUD treatment records from being shared with employers without your written consent — stricter than HIPAA. Your HR department sees only that you used "medical services," not specifics.

Can my employer fire me for using insurance for rehab?

No. FMLA and ADA protect people taking medical leave for addiction treatment. See our FMLA and rehab guide for specifics.

Do I need a referral from my primary doctor?

Depends on plan type. HMO and POS usually require PCP referral. PPO and EPO generally do not. You can always self-refer to SAMHSA's helpline or our helpline — we verify insurance without referral.

Does insurance cover luxury rehabs?

Insurance reimburses at its contracted rate regardless of the facility's list price. If a luxury facility charges $80k and insurance pays $20k contracted rate, you pay the $60k difference (or the facility writes it off). Ask the facility what insurance actually reimburses vs list price.

What if I can't afford my deductible?

Options: (1) Facility payment plan, (2) HSA/FSA, (3) Medicaid if eligible (starts with $0 deductible), (4) Sliding scale if uninsured, (5) Cash rate negotiation, (6) SAMHSA block grants. Read our 8-option guide.

How do I know if a facility is in-network?

Call the facility's admissions AND your insurer separately. Both must confirm. Don't rely on outdated website lists — networks change monthly. For certainty, request written in-network verification before admission.

Sources & references

Mental Health Parity and Addiction Equity Act (MHPAEA) — 29 USC §1185a. cms.gov.
DOL Parity Implementation FAQs — guidance on QTLs and NQTLs. dol.gov/ebsa.
AHIP & SAMHSA analysis — insurance claim denial rates in SUD care.
ASAM Criteria for Treatment Placement. asam.org.
KFF Health Insurance Report 2024 — employer plan cost-sharing benchmarks. kff.org.
HHS CCIIO — Center for Consumer Information and Insurance Oversight. cms.gov/cciio.
42 CFR Part 2 — SUD patient records confidentiality. samhsa.gov.
SUPPORT Act (Public Law 115-271) — 2018 MAT reforms.

Coverage details vary by specific plan. Always verify with your insurer and the facility before admission. Last updated April 2026. Sources: MHPAEA (CMS), KFF Health Tracking, ASAM criteria. See our editorial policy.