Alopecia Areata — CPB 0423 | AETNA Coverage Update

Aetna modified CPB 0423 for alopecia areata treatment coverage, effective September 26, 2025. Here's what billing teams need to know before claims start hitting.

Aetna, a CVS Health company, updated its alopecia areata coverage policy under CPB 0423 Aetna to refine medical necessity criteria across disease severity tiers. The policy distinguishes between mild alopecia areata (less than 50% scalp hair loss) and extensive alopecia areata (greater than 50%), with different covered treatments for each tier. Intralesional injections billed under CPT 11900 and 11901, plus photochemotherapy under CPT 96912, are the primary procedural codes covered when criteria are met.

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Quick-Reference Table

Field	Detail Copy
Payer	Aetna
Policy	Alopecia Areata — CPB 0423
Policy Code	CPB 0423
Change Type	Modified
Effective Date	September 26, 2025
Impact Level	Medium
Specialties Affected	Dermatology, Allergy/Immunology, Primary Care
Key Action	Audit charge capture for CPT 11900, 11901, and 96912 against the severity-tiered criteria before billing claims after September 26, 2025

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Aetna Alopecia Areata Coverage Criteria and Medical Necessity Requirements 2025

The real issue with the updated Aetna alopecia areata coverage policy is the severity threshold. Aetna draws a hard line at 50% scalp hair loss. That threshold determines which treatments qualify as medically necessary — and billing the wrong tier gets your claim denied.

For mild alopecia areata (less than 50% scalp hair loss), Aetna covers two treatment categories: topical anthralin and glucocorticoids delivered topically or intralesionally. Intralesional glucocorticoid injections billed under CPT 11900 (up to seven lesions) or CPT 11901 (more than seven lesions) fall here. Document the lesion count in the chart — it determines which code you bill.

For extensive alopecia areata (greater than 50% scalp hair loss), the covered options expand. Aetna adds oral glucocorticoids and psoralen photochemotherapy (PUVA) to the mix. Photochemotherapy billed under CPT 96912 — psoralens and ultraviolet A — applies specifically to the extensive tier. Cross-reference CPB 0205 if you're billing PUVA; Aetna's phototherapy policy governs that code separately.

Topical immunotherapy — specifically diphenylcyclopropenone (DPCP/DCP) and squaric acid dibutyl ester (SADBE) — has a narrower path to reimbursement. Aetna considers it medically necessary only for extensive alopecia areata after conventional therapies have failed. "Conventional therapies" means a short course of systemic glucocorticoids, oral baricitinib, or oral ritlecitinib. You need documented failure of at least one of those before topical immunotherapy will clear. The policy lists oral baricitinib and oral ritlecitinib by name but notes there are no specific HCPCS codes assigned to those drugs for this indication — bill under the administration codes that apply.

Prior authorization requirements are not explicitly detailed in CPB 0423, but given the step-therapy structure for topical immunotherapy, expect Aetna to request documentation of prior treatment failure. Get that documentation in order before submitting claims.

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Aetna Alopecia Areata Exclusions and Non-Covered Indications

This is where the policy gets expensive if your team isn't careful. A large portion of the codes in CPB 0423 are listed as not covered for alopecia areata. Aetna classifies many treatments as experimental, investigational, or unproven.

Platelet-rich plasma injections (CPT 0232T, HCPCS P9020) are not covered. Low-level laser therapy (CPT 0552T) is not covered. Acupuncture codes — CPT 97810 through 97814 — are not covered. Photopheresis (CPT 36522), photodynamic therapy (CPT 96567, 96573), and actinotherapy (CPT 96900) are all excluded.

Biologic agents including adalimumab (HCPCS J0139, Q5140), etanercept (J1438), infliximab (J1745), and cyclosporine (J7502, J7515, J7516) are listed in the policy but fall in the non-covered group. Same with methotrexate in all its forms — J8610, J8611, J8612, J9250, J9255, J9260 — and azathioprine (J7500, J7501).

Behavioral and psychological interventions — group psychotherapy (CPT 90853), hypnotherapy (CPT 90880), and the health behavior intervention codes (CPT 96156, 96158, 96159, 96164, 96165, 96167, 96168, 96170, 96171) — are also excluded under this policy.

If your dermatology practice has been billing any of these under alopecia areata diagnoses, review those claims now. A claim denial on a biologic or PRP injection for alopecia areata isn't a gray area under this policy — it's a flat no.

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Coverage Indications at a Glance

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Aetna Alopecia Areata Billing Guidelines and Action Items 2025

The effective date of September 26, 2025 means this policy is already live. If you haven't audited your charge capture, do it now.

Copy Action Items

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CPT, HCPCS, and ICD-10 Codes for Alopecia Areata Under CPB 0423

Covered CPT Codes (When Selection Criteria Are Met)

Code	Type	Description Copy
11900	CPT	Injection, intralesional; up to and including seven lesions
11901	CPT	More than seven lesions
96912	CPT	Photochemotherapy; psoralens and ultraviolet A (PUVA)

CPT Codes Related to the Policy (Administration Codes)

These codes appear in CPB 0423 in relation to drug administration and are relevant for billing glucocorticoid injections and infusions under this policy.

Not Covered / Experimental CPT Codes

Covered HCPCS Codes (Glucocorticoid Injections — When Criteria Are Met)

Not Covered / Experimental HCPCS Codes

Key ICD-10-CM Diagnosis Codes

The policy data for CPB 0423 does not list specific ICD-10-CM codes. Use the appropriate alopecia areata diagnosis codes from your encoder — confirm with your coding team that the diagnosis aligns with the documented severity tier before billing.

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