Facial Prostheses, External — CPB 0620 | AETNA Coverage Update

TL;DR: Aetna, a CVS Health company, modified CPB 0620 covering external facial prostheses, effective December 12, 2025. Here's what changes for billing teams.

This update to the Aetna facial prostheses coverage policy affects 11 CPT codes (21076–21088) and 26 HCPCS codes across prosthetic devices, supplies, and ocular components. The policy governs coverage for superficial facial prostheses—nasal, auricular, orbital, mandibular, palatal, and full facial—as well as the adhesives, tapes, and removers used with them. If your practice or billing team submits claims for maxillofacial prosthetics or anaplastology services to Aetna in 2025 or 2026, this policy sets the rules.

Quick-Reference Table

Aetna Facial Prostheses Coverage Criteria and Medical Necessity Requirements 2025

The core medical necessity standard in CPB 0620 is straightforward: Aetna covers a superficial facial prosthesis when there is loss or absence of facial tissue due to disease, trauma, surgery, or a congenital defect.

What stands out here is the explicit carve-out for functional restoration. Aetna covers these prostheses regardless of whether the prosthesis restores function. That's meaningful. It removes a common denial hook—don't let your payer source override it. If you're billing CPT 21088 (facial prosthesis) or CPT 21087 (nasal prosthesis) for a patient who has no functional impairment but does have tissue loss, the medical necessity bar is still met under this policy.

This Aetna facial prostheses coverage policy also explicitly covers the associated supplies: adhesives, adhesive removers, and tape used in conjunction with the prosthesis. That means HCPCS A4364 (adhesive liquid), A4450 (non-waterproof tape), A4452 (waterproof tape), A4455 (adhesive remover or solvent), and A4456 (adhesive remover wipes) are covered supply codes when billed alongside an eligible prosthesis. Don't drop these off your charge sheets—they're billable.

The policy cross-references CPB 0031 (Cosmetic Surgery and Procedures) for the boundary between prosthetic coverage and cosmetic exclusion. If documentation doesn't establish tissue loss from disease, trauma, surgery, or congenital defect, Aetna will treat the claim as cosmetic. That's where claim denial risk lives.

This policy does not mention a prior authorization requirement explicitly, but prior authorization practices vary by Aetna plan and market. Before billing high-cost procedures like CPT 21077 (orbital prosthesis) or CPT 21080 (definitive obturator prosthesis), verify prior auth requirements with the specific Aetna plan. Don't assume the CPB alone tells you what a given commercial plan requires.

Aetna Facial Prostheses Exclusions and Non-Covered Indications

The exclusion list here is short but specific. Aetna does not cover other skin care products related to the prosthesis. This includes cosmetics, skin creams, and cleansers. The policy is direct: these are not medical items.

Two HCPCS codes are explicitly not covered under CPB 0620:

If your team has been bundling these codes into facial prosthetics claims, stop. Both A6250 and A6260 are excluded for indications covered under this CPB. Billing them will generate a denial, and repeated billing of non-covered codes creates a compliance exposure.

The line between covered adhesives (A4364, A4455, A4456) and non-covered skin care products (A6250) may feel subtle to a coder unfamiliar with this policy. The distinction is function: adhesives that physically attach the prosthesis are covered. Skin care products that treat or condition the skin are not. Document accordingly.

Coverage Indications at a Glance

Aetna Facial Prostheses Billing Guidelines and Action Items 2025

1. Audit your charge capture for excluded supply codes before December 12, 2025.
Pull any claims that included A6250 or A6260 alongside facial prosthetics codes. If those are in your charge master or superbill, remove them now. These codes are explicitly excluded under CPB 0620 and will generate denials.

2. Confirm your ICD-10 coding maps to the covered diagnosis set.
The policy supports 12 ICD-10-CM codes. Congenital defects (Q11.1, Q16.0, Q16.9, Q17.8, Q18.8, Q30.1, Q67.0–Q67.4) and acquired absence of eye (Z90.01) are your covered diagnosis anchors. If you're billing for tissue loss from trauma or surgery, confirm your ICD-10 captures the underlying cause—not just a symptom or unrelated finding.

3. Separate your ocular prosthetics workflow from facial prosthetics.
V-series codes (V2623–V2629) for ocular prostheses appear in CPB 0620, but the policy notes that non-orbital ocular prostheses are governed by CPB 0619 (Eye Prosthesis). If your billing team handles both, make sure the right policy governs each claim. Mixing these up creates reimbursement errors that are hard to unwind.

4. Use modifiers KM and KN correctly for replacement prostheses.
Modifier KM applies when a facial prosthesis replacement requires a new impression or moulage. Modifier KN applies when the replacement uses the previous master model. These are not interchangeable. Using the wrong modifier flags the claim for review. Document clearly which scenario applies.

5. Verify prior authorization with the specific Aetna plan before high-cost procedures.
CPB 0620 doesn't specify a prior auth requirement, but individual Aetna plan designs often do. This is especially true for CPT 21077 (orbital prosthesis), CPT 21080 (definitive obturator prosthesis), and CPT 21086 (auricular prosthesis). Call the plan or check the member's authorization requirements before the date of service. One prior auth miss on a high-cost prosthesis is expensive.

6. Keep CPB 0031 in your denial response toolkit.
If Aetna denies a facial prosthesis claim as cosmetic, your appeal path runs through CPB 0031. The functional restoration carve-out in CPB 0620 is your strongest argument: Aetna's own policy says function doesn't have to be restored for coverage to apply. Pull both CPBs when you write that appeal letter.

7. Bill L8049 correctly for prosthesis repairs.
HCPCS L8049 covers repair or modification of a maxillofacial prosthesis, in 15-minute increments, when provided by a nonphysician. If your anaplastologist or prosthetist bills repair time, document the time precisely and bill in increments. Vague repair documentation is a common claim denial trigger.

CPT, HCPCS, and ICD-10 Codes for Facial Prostheses Under CPB 0620

Covered CPT Codes (When Selection Criteria Are Met)

Covered HCPCS Codes (When Selection Criteria Are Met)

Not Covered HCPCS Codes

Key ICD-10-CM Diagnosis Codes