Does Aetna Cover Drug and Alcohol Rehab?

Aetna Inc., a CVS Health company

Checked against public plan documents on September 25, 2026

Usually yes, and unusually for this question there are published numbers rather than reassurances. State transparency laws require Aetna to report how it decides prior authorisation requests, and its own filings show addiction treatment being approved far more often than medical and surgical requests: in Colorado in 2025, 72 of 79 substance use treatment requests were approved outright. What decides your case is narrower than the company name. Inpatient, residential and partial hospitalisation need approval before admission, the review is scored against The ASAM Criteria, and the most expensive mistake is asking afterwards instead of before.

The short version

Coverage lives in your plan, not your insurer — two people holding Aetna cards can have entirely different benefits
Prior authorisation decides most denials — admission without it is among the most common reasons a claim is refused outright
Network status is per service, not per facility — a centre can be in network for outpatient and out of network for residential
83.4% of US facilities accept Medicaid — and 40% use a sliding fee scale: our count of 10,233 facilities

Six questions that decide your bill

Ask these of member services, and write down the reference number of the call. Every answer below changes what you actually pay.

Has the facility submitted the prior authorisation, and can I start it myself if it has not?
Aetna’s office manual says members can begin the prior authorisation process independently. If the intake coordinator is slow, you are not stuck waiting for them.
Which level of care is being requested: inpatient, residential, partial hospitalisation or intensive outpatient?
Aetna’s behavioural health precertification list names inpatient, residential and PHP. Intensive outpatient does not appear on it, which changes how quickly treatment can start.
Are all the clinical records Aetna asked for actually in the submission?
Aetna warns that missing records may cause a denial, and its Colorado filing shows this is not theoretical: three of the seven substance use denials that year were for incomplete information rather than clinical judgement.
Is this being reviewed before admission, during treatment, or after the fact?
Aetna’s District of Columbia filing puts average decision time at about two days for a routine request before service and under half a day during treatment, against 12 to 42 days for a retrospective review.
If the facility is out of network, has anyone asked for the in-network benefit level?
That request is item seven on Aetna’s own behavioural health precertification list. In the District of Columbia filing, 158 of 190 network deficiency requests were approved.
Which criteria set applies, and can I see the copy used in my determination?
Aetna names The ASAM Criteria Third Edition for substance use, LOCADTR instead of it in New York, and LOCUS or CALOCUS-CASII for mental health. A hard copy of the criteria used can be requested on 1-888-632-3862.
Is my plan insured by Aetna or self-funded by my employer with Aetna administering it?
It changes who decides an appeal. Aetna says an appeal may go to a government agency, to the plan sponsor, or to an external review organisation, depending on the plan.
Has Aetna been notified of an emergency admission within two business days?
The office manual requires notification of all inpatient admissions, including those through the emergency department, within that window.

Diagram of the path from policy to paid claim: benefit, network status, prior authorisation, concurrent review — Four separate gates. A yes at one of them is routinely mistaken for a yes at all four.

Table comparing in-network and out-of-network care on negotiated rates, copays, balance billing, deductibles — Network status is per level of care, not per facility. Confirm it for the specific service, in writing.

Checklist of six questions to ask an insurer, covering benefits, prior authorisation, network status, deductible — Write down the reference number and the name of whoever answered. It matters if the claim is later disputed.

What is the same whoever your insurer is

Three things work identically across every private plan in the US, so they are explained once, in full, on the insurance overview rather than repeated here:

Your plan type changes the rules more than your insurer does — whether you hold an HMO, PPO, EPO or POS decides more about your bill than the name on the card does.
If the claim is denied: what actually works — the internal appeal, then the independent external review, and the deadlines that apply to both.
What federal law requires, and what it does not — what the federal parity law requires of your plan, and the four things it does not do.

Everything else on this page is specific to Aetna.

What Aetna’s own filings show about addiction treatment approvals

Most pages answering this question say coverage varies and leave it there. It does vary, but Aetna is required by several state transparency laws to publish how its prior authorisation decisions actually came out, and it does, as PDFs on its provider site. Those filings are the closest thing to an honest answer that exists. Three of them break the numbers out in a way that is useful if you are facing an admission. Read them as what they are: commercial insured plans, one state at a time, small denominators, and no promise about your case.

What was requested	Approved	Denied
Substance use disorder treatment, Colorado	72	7 (3 of them for incomplete information)
Mental or behavioural health, Colorado	214	14
Medical or surgical, Colorado, for comparison	1 845	407
Chemical dependency, District of Columbia	58	5
Detoxification, District of Columbia	26	1
Chemical dependency partial day hospital, DC	12	1
In-network rate at an out-of-network provider, DC	158	32
Addiction medicine providers, New Jersey	43	2
Substance abuse facilities, New Jersey	30	6
Behavioural health providers, New Jersey	43	10

Substance use disorder treatment, Colorado
Approved
72
Denied
7 (3 of them for incomplete information)
Mental or behavioural health, Colorado
Approved
214
Denied
14
Medical or surgical, Colorado, for comparison
Approved
1 845
Denied
407
Chemical dependency, District of Columbia
Approved
58
Denied
5
Detoxification, District of Columbia
Approved
26
Denied
1
Chemical dependency partial day hospital, DC
Approved
12
Denied
1
In-network rate at an out-of-network provider, DC
Approved
158
Denied
32
Addiction medicine providers, New Jersey
Approved
43
Denied
2
Substance abuse facilities, New Jersey
Approved
30
Denied
6
Behavioural health providers, New Jersey
Approved
43
Denied
10

From Aetna’s published prior authorisation reports: Colorado 2025, District of Columbia 2025 (Aetna Health Inc.), New Jersey 2025 (Aetna Life Insurance Company). Commercial insured plans only, which is mostly employer coverage. Self-funded employer plans are not in these figures.

The comparison that matters is not the approval rate, it is the gap

In the same Colorado filing, 8.9 per cent of substance use requests were denied against 18 per cent of medical and surgical requests. That is worth knowing for two reasons. It is reassuring if you are about to ask, because the picture painted by rehab marketing, in which insurers reflexively refuse addiction treatment, does not match what Aetna reported to its regulator. And it is useful if you are denied, because a denial in a category with a low denial rate is more likely to be about your paperwork than about a policy of refusing this kind of care.

Nearly half the Colorado denials were administrative

Of the seven substance use denials Colorado recorded, three were coded as incomplete information provided and four as not meeting criteria. None were recorded as not a covered benefit. Put differently, the commonest single reason for a refusal in that year was not a clinician disagreeing about severity, it was a submission missing something. Aetna’s own precertification instructions say the same thing from the other side: if you do not send all the medical records we ask for, it may delay our review or cause a denial of coverage. The practical move is unglamorous. Before the request goes in, ask the facility which documents are attached.

Timing changes the outcome more than argument does

The District of Columbia filing records average decision times for 2025: roughly a quarter of a day for an urgent request before service, about two days for a routine one, around a third of a day for a concurrent review while a person is already in treatment, and between 12 and 42 days for a retrospective review depending on the Aetna entity. That last gap is the whole argument for asking first. A retrospective request is not merely slower, it is decided after you have already incurred the cost and lost the chance to choose differently.

What needs approval before you admit, and what does not

Aetna publishes a separate behavioural health precertification list, distinct from the medical one. In its current version, effective 1 August 2024, four things on it concern addiction treatment: inpatient confinements, which the document defines to include stays in a hospital, psychiatric hospital, substance use disorder facility or residential treatment centre; partial hospitalisation programmes; residential treatment centres and facilities, each with their own procedure codes; and coverage at an in-network benefit level for an out-of-network provider or facility unless the services are emergent.

Intensive outpatient does not appear on that list

Read carefully, because the distinction is easy to overstate. Intensive outpatient treatment is absent from Aetna’s behavioural health precertification list, while partial hospitalisation is on it with specific codes. That does not mean intensive outpatient is free, or guaranteed, or outside the plan’s rules: the same document says services that do not need precertification are still subject to the coverage terms of the member’s plan. What it does mean is that the single slowest step in the process, waiting for an authorisation decision before anything can begin, is not built into that level of care by default. For someone who needs to start this week, that is a real difference between two options a facility may present as equivalent.

You can start the request yourself

Aetna’s office manual states that members can begin the prior authorisation process with Aetna independently, and that if the preadmission information is incomplete Aetna contacts the admitting physician for clarification. This is worth knowing because the usual advice, wait for the facility to handle it, assumes the facility is moving. Starting it yourself does not replace the clinical submission, which still has to come from the treating clinician, but it does start the clock and it tells you whether a request exists at all.

Whose plans this list covers, and whose it does not

The behavioural health precertification list applies to Aetna plans, Aetna Medicare plans, and the joint venture plans: Banner|Aetna, Innovation Health, Sutter Health | Aetna and Texas Health Aetna. It does not apply to members in a Traditional Choice or indemnity plan, the Foreign Service Benefit Plan, the Mail Handlers Benefit Plan or the Rural Carrier Benefit Plan. Two state carve-outs sit in the medical list alongside it: precertification programmes do not apply to fully insured members in Indiana, and in Texas precertification does not mean payment for fully insured HMO and PPO members, as that state’s law defines it.

Emergency admissions have a two business day clock

Aetna requires notification of all inpatient admissions, including those that come through the emergency department, within two business days of the admission. If the patient could not provide coverage information at the time, the instruction is to make contact as soon as the coverage is known and to explain the circumstances then rather than later. Someone admitted in a crisis is rarely in a position to track this. It is a reasonable thing for a family member to ask about on the second day.

The out-of-network request most people never make

Item seven on Aetna’s behavioural health precertification list is coverage at an in-network benefit level for an out-of-network provider or facility. It is listed as a service you can request approval for, in the same list as a residential admission. In insurer language this is a network gap or network deficiency request, and the argument behind it is that the plan’s own network does not contain a provider who can deliver the care you need within a reasonable distance and time. Addiction treatment is one of the areas where that argument is most often true, because residential beds and specialist programmes are unevenly distributed.

It is granted more often than people expect

The District of Columbia filing lists network deficiency as its own category: 158 approved against 32 denied for medical necessity, out of 190 requests. That is the third largest category in the whole filing, behind general medical and surgical. Whatever else those numbers mean, they are not the numbers of a request that gets waved away. If the programme that fits is out of network and there is nothing equivalent inside it, the request is worth making, in writing, before admission rather than after the bill.

What the argument has to contain

A gap request is not an appeal to fairness. It has to name the level of care recommended, show that the in-network directory does not contain a provider offering it within a reasonable travel time, and show that someone actually tried: the names called, the dates, and what each said about waiting time or admission criteria. Directories are frequently out of date, and a list of in-network facilities that turned you away or cannot admit for six weeks is the substance of the request. Keep that list as you make the calls, not afterwards from memory.

Which criteria your review is scored against

Aetna’s 2026 office manual lists the criteria its utilisation management staff use, and the list is longer than any single answer suggests. For substance use disorders it names The ASAM Criteria: Treatment for Addictive, Substance-Related, and Co-Occurring Conditions, Third Edition. For mental health levels of care it names LOCUS for adults and CALOCUS-CASII for children and adolescents. Alongside those sit MCG Care Guidelines, Aetna’s own Clinical Policy Bulletins, CMS coverage determinations for Medicare plans, and state-mandated criteria where a state requires a particular set.

New York does not use ASAM

The manual states it directly: the Level of Care for Alcohol and Drug Treatment Referral, LOCADTR, is used in place of The ASAM Criteria for chemical dependency treatment provided in New York. LOCADTR was developed by the New York State Office of Addiction Services and Supports and is mandated for use there. If you are admitting in New York, an assessment written purely in ASAM dimensions is being read against a different instrument, and the treating clinician should know which one before the submission goes in.

The edition is named, and editions differ

Aetna names the third edition of the ASAM criteria. ASAM published a fourth edition for adults in 2023, which reorganised how levels of care are described and how the dimensions are scored. We are not going to tell you which one a particular reviewer opened on a particular day, because we do not know. What we can say is that the manual on Aetna’s own site names the third, that a clinician writing to the fourth may be using language the reviewer is not matching against, and that this is a question worth asking rather than assuming.

You can ask for the criteria used in your own decision

The office manual tells participating physicians they may request a hard copy of the criteria used to make a determination by calling the provider contact centre on 1-888-632-3862, and that the criteria are available at the point of care through the provider portal. This matters for the same reason it matters with any insurer: an appeal is an argument that the criteria were misapplied to the facts of your case, and that argument cannot be constructed against a criteria set you have not read.

If the request is denied

Aetna offers a peer-to-peer review as part of the utilisation review process, before the appeal machinery starts. That is a direct conversation between the treating clinician and an Aetna reviewer, and its timing is set by state, federal, CMS and accreditation requirements rather than by the facility’s convenience. If the denial stands, the member, or a physician acting on the member’s behalf, can appeal through the complaint and appeal process. Where that appeal goes depends on the plan: to a government agency, to the plan sponsor, or to an external utilisation review organisation that uses independent physician reviewers.

Appeals succeed often enough to be worth the effort

New Jersey’s 2025 filing records 144 medical appeals for Aetna Life Insurance Company, of which 45 were approved and 99 denied. Colorado’s records seven appeals in the mental and behavioural health category, three of which were reversed. These are small numbers and they cover all medical categories rather than addiction treatment alone, so treat them as an order of magnitude rather than a forecast. The order of magnitude is roughly one appeal in three succeeding, which is a different proposition from the resigned assumption that appealing is pointless.

Three things to have before the peer-to-peer call

The denial in writing, with the criteria named. The full clinical record already submitted rather than promised. And a clear statement of which level of care is being requested and why the one Aetna would authorise instead is not clinically adequate. That last point is the one most often missed: a denial of residential care is frequently an approval of something less intensive, and the appeal is not an argument that the patient needs treatment, it is an argument about which rung.

Aetna states it does not reward reviewers for denying

The manual says plainly that Aetna does not reward physicians or other individuals who conduct utilisation reviews for issuing denials of coverage or for creating barriers to care, and that financial incentives for utilisation management decision-makers do not encourage denials. We include it because it is a written commitment on the record rather than a marketing line, and because quoting a company its own published standard is a more useful move in a dispute than expressing suspicion.

Which Aetna is on your card, and what it cannot charge you for

Aetna is a brand covering several legal entities, and the prior authorisation filings make the difference visible: Aetna Life Insurance Company and Aetna Health Inc. report separately, with different decision times and different appeal volumes in the same city in the same year. The behavioural health precertification list adds the joint venture plans to that picture, naming Banner|Aetna, Innovation Health, Sutter Health | Aetna and Texas Health Aetna as carrying the same rules. The entity name appears in the small print on the card and in your plan documents, and it is the thing to quote when a phone line tells you it has no record of your plan.

A network facility cannot bill you for its own missed authorisation

Aetna states the rule to its network providers directly: you may not bill or balance bill members when claims are denied for administrative reasons such as lack of referral or authorisation when one was required, or where there is a dispute or payment delay involving a payer. It goes further and says that if a member is incorrectly billed, balance billed or overcharged, the provider is asked to remedy it and refund promptly, and that Aetna may terminate a provider from the network for incorrect balance billing. This is worth knowing on the day the bill arrives, because it will look exactly like a legitimate one.

Insured or self-funded changes who you are arguing with

If your employer buys insurance from Aetna, Aetna carries the risk and state insurance law applies, which is why the transparency filings quoted above exist at all: they cover commercial insured plans. If your employer self-funds and hires Aetna to administer the plan, the employer’s own money pays the claims, and Aetna says an appeal may be directed to the plan sponsor rather than to Aetna or a state agency. Two colleagues can hold cards that look identical and sit on opposite sides of that line. Human resources can tell you which one you have, and it is the first thing to settle if an appeal is going past the first level.

Provider search: Aetna directory. Directories lag behind actual network changes — confirm by phone before you admit.

Common questions

Does Aetna cover residential rehab?

Residential treatment centres and facilities are on Aetna’s behavioural health precertification list, which means the benefit exists and the admission needs approval in advance. In its published Colorado filing for 2025, Aetna approved 72 of 79 substance use treatment requests and recorded none as refused for being outside the benefit.

Does Aetna need prior authorisation for intensive outpatient treatment?

Intensive outpatient does not appear on Aetna’s behavioural health precertification list, while partial hospitalisation does. That is not the same as unconditional coverage: services that need no precertification are still subject to the terms of your plan. Confirm it for your own plan before you rely on it.

How often does Aetna deny addiction treatment?

In Colorado in 2025, Aetna reported 7 denials out of 79 substance use treatment requests, about 9 per cent, against 18 per cent for medical and surgical requests in the same filing. Three of those seven were for incomplete information rather than clinical judgement. The figures cover commercial insured plans in one state.

Will Aetna pay for an out-of-network rehab?

You can request coverage at the in-network benefit level for an out-of-network provider, and Aetna lists that request on its own behavioural health precertification list. In the District of Columbia filing for 2025 there were 190 such requests, of which 158 were approved. The argument has to show that no in-network provider can deliver the level of care you need within a reasonable time and distance.

Which criteria does Aetna use for addiction treatment?

The ASAM Criteria, Third Edition, for substance use disorder levels of care, with LOCADTR used instead for chemical dependency treatment provided in New York. Mental health levels of care use LOCUS for adults and CALOCUS-CASII for ages 6 to 18, alongside MCG Care Guidelines and Aetna’s own Clinical Policy Bulletins.

Can I start the prior authorisation myself?

Yes. Aetna’s office manual states that members can begin the prior authorisation process independently, and that Aetna will contact the admitting physician if the preadmission information is incomplete. The clinical submission still has to come from the treating clinician.

How long does an Aetna decision take?

Its District of Columbia filing for 2025 gives averages of roughly a quarter of a day for an urgent pre-service request, about two days for a routine one, around a third of a day for a concurrent review during treatment, and 12 to 42 days for a retrospective review. That last figure is the reason to ask before admission rather than after.

Is it worth appealing an Aetna denial?

New Jersey’s 2025 filing records 45 of 144 medical appeals approved, and Colorado records three of seven behavioural health appeals reversed. Both are small samples across all categories, but neither supports the assumption that appealing is futile. Ask for a peer-to-peer review first, with the full record already submitted.

What happens if my rehab admission was an emergency?

Aetna requires notification of all inpatient admissions, including those through the emergency department, within two business days. If coverage information was not available at the time, the instruction is to make contact as soon as it is known and explain the circumstances then.

Is my plan insured by Aetna or administered for my employer?

It changes which rules apply and who decides an appeal. An insured plan falls under state insurance law, including the transparency filings quoted on this page. A self-funded plan is paid for by your employer under federal ERISA rules, and Aetna notes that an appeal may be directed to the plan sponsor. Your HR department can tell you which you have.

Questions that do not depend on your insurer — what an employer sees, what you pay before the deductible, what to do when a lower level of care is approved instead — are answered on the insurance overview.

Compare levels of care

Practical guides

Five-step diagram of prior authorisation: clinical assessment, request submitted by the facility, plan review within about 72 hours, decision, then concurrent review — Admission before authorisation is one of the most common reasons a claim is refused outright. Confirm in writing who is submitting it.

Five-step diagram of appealing a denial: written denial, internal appeal within 180 days, peer-to-peer review, independent external review, state insurance regulator — A first denial is not the end of the process. Ask specifically which level of care the plan will authorise instead of the one it refused.

Bar chart of payment types accepted by US addiction treatment facilities: cash 91.6%, private insurance 80.7%, Medicaid 83.4%, Medicare 55.2%, state-financed 54.5%, military 49.6%, sliding scale 40.0%, payment assistance 22.5% — Accepting your insurer is not the same as your plan covering the level of care you need. The two questions have to be asked separately.

Bar chart of how many US treatment facilities offer each level of care: outpatient 85.4%, residential 21.4%, medical detox 19.5%, hospital inpatient 5.9% — Outpatient care is nearly universal; residential and detox are the scarce tiers. That scarcity is part of why they cost what they do and why waits exist.

Bar chart comparing Medicaid acceptance among treatment facilities in the nine largest US states — Where the share is low, the reason is usually how the state runs its programme rather than reluctance among facilities.

Where this sits in the system of care

Addiction treatment is organised into levels of care, and clinicians choose between them using the ASAM criteria (six dimensions covering withdrawal risk, medical and psychiatric conditions, readiness, relapse risk and, decisively, the environment you return to. Facilities are licensed by the state and many hold additional accreditation from bodies such as the Joint Commission or CARF; that status is worth confirming for any specific programme. Percentages below are our count of how many facilities in the federal directory report offering each level of care.

Detox19.5% of facilitiesmedical withdrawal management, 3–7 daysDetox vs rehab
Residential21.4% of facilitieslive on site, 24-hour staffingInpatient vs outpatient
PHP20–30 structured hours a week, sleep at homePHP vs IOP
IOP9–19 hours a week, usually compatible with workPHP vs IOP
Standard outpatient85.4% of facilities1–8 hours a week, the maintenance levelMutual aid options

“Remaining in treatment for an adequate period of time is critical.”
— National Institute on Drug Abuse, Principles of Effective Treatment

Programmes for specific groups

Facilities also report dedicated programming, and the coverage is wider than most people expect, worth asking about before assuming a programme will not fit. From our count: 42.7% run programmes for adolescents, 39.2% for veterans, 38% for pregnant and postpartum women, and 25% provide services in Spanish. Medication for opioid use disorder is available at 59.2% (buprenorphine) and 13.7% (methadone).

Cost and coverage vary by level: residential care is the tier insurers scrutinise most and almost always requires prior authorisation before admission. See what your plan covers and how to pay without insurance. Family involvement is a standard part of most programmes, and aftercare planning ( step-down to a lower level, sober living, relapse prevention) should be discussed before admission, not at discharge. If a mental health condition is also present, ask specifically whether the programme is staffed for co-occurring disorders: 69.5% of facilities in the directory report treating them, but that is a self-reported field worth confirming.

Diagram of the step-down pathway through addiction treatment: detox, residential, partial hospitalisation, intensive outpatient, then outpatient and aftercare — Nobody needs every step. The ladder exists so that support can be reduced as stability improves, not so that everyone starts at the top.

Checklist of the six ASAM assessment dimensions: withdrawal risk, medical conditions, emotional and behavioural conditions, readiness to change, relapse potential, and recovery environment — This is the framework US programmes and insurers actually use. The sixth dimension — what home is like — is the one families most often underestimate.

Checklist of six questions to ask a treatment facility about network status, prior authorisation, all-in cost, medication availability, aftercare and accreditation — How plainly a programme answers these is itself information about how it operates.

Three figures: 69.5% of facilities treat co-occurring disorders, 59.8% offer trauma-informed care, 19.5% run medical detox — Co-occurring capability is self-reported. Ask what it means concretely, which clinicians are on staff, and whether psychiatric medication can be prescribed and reviewed on site.

Table showing when to call 911, 988 or the SAMHSA National Helpline for overdose, immediate danger, suicidal thoughts, severe distress and treatment questions — All three are free and staffed around the clock. 988 is the Suicide & Crisis Lifeline; the SAMHSA National Helpline is 1-800-662-4357.

Sources

How this page was made

Who wrote it:: the Westbrook Recovery editorial team : researchers and writers, not clinicians. No doctor has reviewed this page, and we do not claim otherwise. What that means in practice: we report what public clinical sources say and show you where to read them, rather than offering a clinical opinion of our own.
Checked against:: 11 primary sources listed above: federal agency material and published clinical criteria. Where a figure varies by state, plan or facility, we say so instead of publishing a number that looks authoritative and is not.
Original analysis:: the facility proportions on this page are our own count of SAMHSA’s public directory. The full method is documented , including what we count, what we deliberately do not publish, and an error the approach caught. You can repeat the pull and check the numbers.
Last reviewed:: September 25, 2026. This date changes when the content is actually re-checked, not automatically on every visit.
What this page is not:: a medical recommendation, a diagnosis, or a referral. Decisions about levels of care and medication belong with a clinician who knows your history. We do not operate facilities, take placement fees, or receive payment for sending anyone anywhere.

Other insurers

Deciding on a level of care? Compare PHP and IOP or inpatient and outpatient rehab.

Coverage details change and vary between plans from the same insurer. This page explains how to verify your own benefit: it is not a statement of what your plan covers, and it is not medical or legal advice. If you are in crisis, call or text 988 in the US, or reach the SAMHSA National Helpline at 1-800-662-4357 — free, confidential, 24/7.