Does Aetna Cover Inpatient Rehab in California?

What Aetna Covers for Inpatient Rehab

Aetna commercial PPO plans typically cover medical detox, residential inpatient treatment (30, 60, or 90 days), partial hospitalization (PHP), and intensive outpatient (IOP). Aetna uses Aetna Behavioral Health for utilization review and authorization decisions. In-network residential facilities in the LA area have direct contracts with Aetna and produce the cleanest placement path. Out-of-network placements are possible; under SB 855, if a network provider within a reasonable distance can't provide timely care, the insurer must arrange out-of-network care at in-network out-of-pocket costs (California Department of Insurance).

Typical Aetna Out-of-Pocket for 30-Day Inpatient

It varies by plan design. Your cost depends on your deductible, coinsurance, and out-of-pocket maximum; once you reach the out-of-pocket maximum for the plan year, covered in-network care generally costs you nothing more. A placement advisor can give you real numbers for your policy in one call.

Aetna Denial Appeals

Aetna denials are appealable. Under federal rules, you must file an internal appeal within 180 days (6 months) of receiving notice that your claim was denied (HealthCare.gov), and you can then seek external independent medical review (IMR) through the California Department of Managed Health Care or Department of Insurance. Under regulations announced in July 2025, a reviewer who makes an adverse benefit determination on SUD benefits must be a board-certified addiction specialist physician, so ask who reviewed your denial.

How Aetna Placement Works in Practice

Step 1: Placement advisor calls Aetna Behavioral Health with member ID and confirms active PPO coverage plus benefits for inpatient SUD treatment. Step 2: Advisor identifies in-network facilities in the caller's preferred LA region. Step 3: Facility's admissions team submits a pre-authorization request to Aetna. Step 4: Authorization received, admission scheduled. Timing depends on the insurer's review and bed availability.

Last reviewed: October 29, 2026