Fractional Carbon Dioxide (CO2) Laser Ablation Treatment of Hypertrophic Scars or Keloids for Functional Improvement
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This policy defines Blue Cross Blue Shield - Rhode Island's coverage stance for fractional carbon dioxide (CO2) fractional ablative laser treatment of hypertrophic scars or keloids for functional improvement for Medicare Advantage and Commercial products.
No material clinical or coverage changes in this revision.
Coverage Determination and Criteria
Coverage determination
Coverage determinations for fractional CO2 fractional ablative laser ablation of hypertrophic scars or keloids for functional improvement:
Medicare Advantage stance
Commercial products stance
Use of CPT codes 0479T and 0480T corresponds to fractional ablative laser fenestration of burn and traumatic scars for functional improvement. These codes are listed in this policy as not covered for Medicare Advantage Plans and not medically necessary for Commercial Products.
For Commercial Products, carbon dioxide (CO2) fractional laser ablation treatment of hypertrophic scars or keloids for functional improvement is considered not medically necessary because the evidence is insufficient to determine effects on health outcomes. Corresponding CPT codes 0479T and 0480T are explicitly listed as not medically necessary for Commercial Products.
Procedure Codes and Coding Guidance
| 0479T | Fractional ablative laser fenestration of burn and traumatic scars for functional improvement; first 100 cm2 or part thereof, or 1% of body surface area of infants and children |
| 0480T | Fractional ablative laser fenestration of burn and traumatic scars for functional improvement; each additional 100 cm2, or each additional 1% of body surface area of infants and children, or part thereof |
Billing, Authorization, and Provider Requirements
Prior authorization — verify benefits
Prior authorization is listed as Not applicable in this policy; however, verify member benefits and coverage per the benefit booklet or subscriber agreement before providing services.
Benefit & eligibility check (operational)
Confirm eligibility and benefit limits for the patient’s plan before scheduling or billing; for member-specific benefits call the provider call center as directed in the policy.
- Refer to the member's Benefit Booklet, Evidence of Coverage or Subscriber Agreement for applicable benefits and eligibility.
- Call the provider call center for member-specific benefit information.
Benefit verification — member documents govern payment
Refer to the member’s Benefit Booklet, Evidence of Coverage or Subscriber Agreement to determine whether services are covered; benefits and eligibility determine payment and supersede this policy.
Not covered / Not medically necessary CPT codes — denial risk
Claims for CPT codes 0479T and 0480T are not covered for Medicare Advantage Plans and are not medically necessary for Commercial products; submitting these codes will trigger denial or noncoverage.
- 0479T — Fractional ablative laser fenestration of burn and traumatic scars for functional improvement; first 100 cm2 or part thereof, or 1% of body surface area of infants and children
- 0480T — Fractional ablative laser fenestration of burn and traumatic scars for functional improvement; each additional 100 cm2, or each additional 1% of body surface area of infants and children, or part thereof
- Do not bill these services under Medicare Advantage (not covered) or Commercial plans (not medically necessary) per this policy.
Clinical Background
Hypertrophic scars and keloids are cutaneous lesions resulting from abnormal wound healing. A hypertrophic scar is a raised lesion that remains within the original injury boundaries and may regress over time, whereas a keloid extends beyond the original injury margins and is often refractory to treatment with a high recurrence rate after excision.
Fractional CO2 ablative laser treatment creates microscopic thermal injuries with epidermal ablation and dermal remodeling aimed at improving scar texture, thickness, and stiffness. The technique has been used for scar management, but available randomized trials and systematic reviews do not provide sufficient, high-certainty evidence demonstrating functional benefit for hypertrophic scars or keloids.
Definitions
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