27331 CPT® code: payer coverage and prior authorization5 of 5 payer prior-auth lists that name 27331 require prior authorization or set conditions: Blue Cross Blue Shield of Arizona (AZ Blue), Blue Cross and Blue Shield of Texas, HealthSpring, Neighborhood Health Partnership, UnitedHealthcare.
| Payer | Plan | State | Prior auth | Conditions | Since | Source |
|---|---|---|---|---|---|---|
| Blue Cross Blue Shield of Arizona (AZ Blue) | Federal Employee Program (FEP) | AZ | prior auth under conditions | FEP Blue Focus only | Sep 1, 2026 | Federal Employee Program (FEP) Prior Authorization Requirements Code List (Updated 09/01/2026) |
| Blue Cross and Blue Shield of Texas | Texas PA exemption (gold card), outpatient, fully insured | TX | prior auth required | Gold-card exemption available | Jan 1, 2024 | BCBSTX Outpatient Prior Authorization Exemption Clinical Guidelines (max units, PA exempt date range) |
| HealthSpring | Medicare Advantage | All | prior auth required | Jan 1, 2025 | 2026 Q4 Prior Authorization List | |
| Neighborhood Health Partnership | Neighborhood Health Partnership | FL | prior auth under conditions | site of care: outpatient hospital; not in AK, IL, GU, MA, PR, RI, TX, UT, VI, WI | Sep 1, 2026 | Prior authorization requirements for Neighborhood Health Partnership Effective September 1, 2026 |
| UnitedHealthcare | UnitedHealthcare Complete (Individual & Family plans) | All | prior auth under conditions | site of care: outpatient hospital | Sep 1, 2026 | Prior authorization requirements for UnitedHealthcare Complete Effective September 1, 2026 |
27331 appears in 5 coverage policies from Aetna.
| Payer | Policy | Role in policy | Reviewed | Document |
|---|---|---|---|---|
| Aetna | Bone and Tendon Graft Substitutes and Adjuncts (0411) | listed, no stance (range 27301-27499) | Aug 18, 2026 | payer document |
| Aetna | Intraoperative Neurophysiological Monitoring (0697) | not covered (range 27301-27599) | Jun 19, 2026 | payer document |
| Aetna | Nerve Blocks (0863) | listed, no stance (range 27301-27599) | Jul 23, 2026 | payer document |
| Aetna | Remote Ischemic Conditioning (0814) | listed, no stance (range 20000-29999) | Nov 20, 2025 | payer document |
| Aetna | Skin and Soft Tissue Substitutes (0244) | not covered (range 20100-29999) | Jul 29, 2026 | payer document |
Prior authorization required or conditional in WA.
From payers' published prior-auth lists, coverage policies and state Medicaid fee schedules, updated Oct 16, 2026. The role is what the policy's own code table or text says about the code. Not a guarantee of coverage or payment; verify with the payer. CPT® is a registered trademark of the American Medical Association.