Radiation Treatment for Selected Nononcologic Indications — CPB 0551 | AETNA Coverage Update

TL;DR: Aetna modified CPB 0551 covering radiation treatment for nononcologic indications, effective February 27, 2026. Billing teams managing CPT codes 77401–77417, 77436–77439, 77767–77772, and 77778 need to confirm criteria alignment before submitting claims for keloids, heterotopic ossification, pterygium, Ledderhose disease, and osteoarthritis.

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Field	Detail
Payer	Aetna
Policy	Radiation Treatment for Selected Nononcologic Indications — CPB 0551
Policy Code	CPB 0551
Change Type	Modified
Effective Date	2026-02-27
Impact Level	Medium-High
Specialties Affected	Radiation oncology, orthopedic surgery, ophthalmology, dermatology, podiatry
Key Action	Audit active claims and charge capture for all covered indications against updated medical necessity criteria before February 27, 2026

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Aetna Nononcologic Radiation Treatment Coverage Criteria and Medical Necessity Requirements 2026

The Aetna nononcologic radiation treatment coverage policy under CPB 0551 covers five distinct indications — but each one carries its own hard criteria. Getting one criterion wrong means a claim denial. The real issue here is that this isn't a single policy — it's five mini-policies bundled under one bulletin. Your billing team needs to treat each indication separately.

Keloids

Aetna covers low-dose or high-dose radiation — superficial or interstitial — as adjunctive therapy following keloid excision. The timing requirement is strict: treatment must begin within seven days of surgery. The underlying keloid removal must also meet medical necessity criteria under CPB 0031.

Relevant codes here include CPT 77401–77417 for radiation treatment delivery and 77767–77772 for remote afterloading high dose rate radionuclide skin surface brachytherapy. ICD-10 code L91.0 (hypertrophic scar/keloid) links this diagnosis to coverage. Missing that seven-day window will cost you reimbursement — document the surgical date clearly on every claim.

Heterotopic Ossification Prevention

Aetna covers radiation therapy to prevent heterotopic ossification (HO) in high-risk patients. This is prevention, not treatment — and Aetna defines "high-risk" very specifically. The patient must have at least one of the following: previous HO, ankylosing spondylitis (M08.1, M45.0–M45.9), diffuse idiopathic skeletal hyperostosis, spinal stenosis (M48.0–M48.8), unlimited hip motion preoperatively, or a head injury (S06.0x0A–S06.9x9S).

Three of those six risk factors have ICD-10 codes mapped in this policy: ankylosing spondylitis (M08.1, M45.0–M45.9), spinal stenosis (M48.0–M48.8), and head injury (S06.0x0A–S06.9x9S). Diffuse idiopathic skeletal hyperostosis, previous HO, and unlimited hip motion preoperatively do not have codes mapped in the source policy. Use the right code for the specific documented risk factor. A generic "at risk for HO" note in the chart won't support medical necessity — the specific risk factor needs to be documented and coded.

Ledderhose Disease (Plantar Fibromatosis)

Radiation therapy for Ledderhose disease — coded M72.2 — is covered only after conventional treatments have failed. Aetna specifies that conventional treatments must have failed, citing tamoxifen, verapamil, and steroid injections as examples. Document all failed therapies — the policy uses "e.g.," so the list is illustrative, not exhaustive.

Document each failed therapy in the record, including the duration of treatment and why it was discontinued. Skipping that documentation sets up a clean claim denial. If your facility is seeing Ledderhose cases for radiation without that paper trail, fix it now — before the effective date of February 27, 2026.

Pterygium

Beta irradiation for pterygium is covered to prevent primary or recurrent occurrence — but only when the condition cannot be managed medically. CPT 77401 covers beta irradiation delivery in this context. This is a narrower coverage path than the other indications.

Note: CPB 0551 does not specify prior authorization requirements. Verify PA requirements separately with the applicable plan, as this is standard practice for radiation therapy regardless of indication.

Osteoarthritis — The Most Complex Criteria

This is where CPB 0551 billing gets complicated. Radiation therapy for osteoarthritis (M15.0–M19.93) is covered, but four criteria must all be met simultaneously:

All four criteria must be met and documented. Criterion four alone is a significant documentation burden. You need an orthopedic surgery consult note — not just a referral — that explicitly states the member is a joint replacement candidate but is medically inoperable. Without that note, Aetna has grounds for denial. If your practice doesn't already have a documentation template for this pathway, build one.

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Aetna Nononcologic Radiation Exclusions and Non-Covered Indications

Two indications are explicitly experimental, investigational, or unproven under this coverage policy. These are not gray areas. Aetna will not reimburse claims for these indications.

TRASER device for nasal telangiectasias (ICD-10 I78.1): The Total Reflection Amplification of Spontaneous Emission Radiation device is not covered. Aetna's position is that effectiveness has not been established. CPT codes 77373 and 77435 — stereotactic body radiation therapy delivery and management — are listed as not covered for indications in this bulletin.

Ablative radiotherapy for cardiac arrhythmias (ICD-10 I49.1–I49.9): Aetna classifies this as experimental. This is a growing treatment modality in cardiology, but Aetna's coverage policy hasn't moved with it. If your organization has been billing ablative RT for arrhythmia under CPT 77373 or 77435, those claims are going to get denied. Stop billing it to Aetna without an approved clinical trial authorization or appeals strategy in place.

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Coverage Indications at a Glance

Note: CPB 0551 maps all 28 covered CPT codes to a single group — "covered when selection criteria are met." The policy does not assign specific CPT codes by indication. Confirm which codes apply to your specific case based on the treatment modality used.

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Aetna Nononcologic Radiation Billing Guidelines and Action Items 2026

Copy Action Items

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CPT, HCPCS, and ICD-10 Codes for Nononcologic Radiation Treatment Under CPB 0551

Covered CPT Codes (When Selection Criteria Are Met)

Not Covered / Experimental CPT Codes

Code	Type	Description	Reason Copy
77373	CPT	Stereotactic body radiation therapy, treatment delivery, per fraction to 1 or more lesions	Not covered for indications listed in CPB 0551
77435	CPT	Stereotactic body radiation therapy, treatment management, per treatment course, to 1 or more lesions	Not covered for indications listed in CPB 0551

Key ICD-10-CM Diagnosis Codes

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