Summary & Overview
CPT 0479T: Fractional Ablative Laser Fenestration for Burns and Scars
CPT code 0479T represents a fractional ablative laser procedure that creates fenestrations (openings or windows) in burns and traumatic scars. It is reported for the first 100 cm2 in adults or 1 percent of body surface area in infants and children. This technique is used in dermatology and plastic surgery to improve scar texture, pliability, and healing, and is increasingly used as a targeted procedural option for complex scar management.
Key national payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise review of clinical context for the procedure, typical service settings, and practical reporting parameters tied to the code definition. The publication outlines benchmarking considerations, common billing modifiers, and typical payer coverage patterns when available.
The piece aims to clarify when to report CPT code 0479T, what units it represents, and the typical clinical scenarios in which fractional ablative fenestration is applied. Where specific payer coverage details or supporting taxonomies and ICD-10 mappings are not provided in the input, the document notes that data are not available and focuses on the procedural definition, reporting basis, and operational implications for providers and billing teams.
Billing Code Overview
CPT code 0479T describes creation of openings or windows (fenestrations) in burns and traumatic scars using a fractional ablative laser technique. The code is reported for the first 100 cm2 in adults or 1 percent of body surface area (BSA) in infants and children.
Service type: Laser-based scar revision (fractional ablative fenestration)
Typical site of service: Outpatient dermatology or plastic surgery procedural setting, including ambulatory surgery centers and office-based procedural suites where laser wound/scar procedures are performed.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 34-year-old adult patient presents to an outpatient dermatology clinic for treatment of mature burn scars over the anterior chest and upper abdomen resulting from a full-thickness burns sustained 18 months prior. The scars are symptomatic with tightness and restricted movement and are cosmetically concerning. The dermatologist evaluates the extent and documents prior conservative therapies (topical emollients, scar massage, and pressure therapy). After informed consent, the provider performs fractional ablative laser fenestration to create multiple small openings in the scar tissue to promote remodeling. The documented treated surface area is 160 cm2; billing uses 0479T for the first 100 cm2 and additional area is reported per facility policy or with an unlisted/add-on code as applicable. Typical workflow: preprocedure photography and consent, local anesthesia or topical analgesia, sterile preparation, fractional ablative laser fenestration of scarred areas, immediate postprocedure care and instructions, and scheduled follow-up visits for wound care and assessment of scar remodeling.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the work required is substantially greater than typically required (e.g., extensive debridement of rigid scar prior to fenestration). |
52 | Reduced services | Use when the procedure is partially reduced or not completed as planned (e.g., limited treated area due to patient intolerance). |
53 | Discontinued procedure | Use when the procedure is started but terminated due to extenuating circumstances (e.g., patient syncopal event). |
59 | Distinct procedural service | Use when other services performed on the same day are distinct and separate from the laser fenestration (e.g., unrelated surgical procedure). |
62 | Two surgeons | Use when two surgeons work together as primary surgeons performing distinct portions of a complex scar revision including fenestration. |
58 | Staged or related procedure by same physician during postoperative period | Use when fenestration is a planned staged procedure following an initial scar revision. |
76 | Repeat procedure by same physician (note: 76 not listed in input; excluded) | Data not available in the input. |
AS | Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery | Use when an approved non-physician assistant is recorded as assisting during the procedure. |
QK | Medical direction of two, three, or four performers; substantial portion by physician | Use when the reporting physician medically directs multiple qualified individuals performing the procedure. |
QX | CRNA service with medical direction by a physician | Use when a CRNA provides anesthesia services for the procedure under physician medical direction. |
QY | Medical direction of one CRNA by an anesthesiologist | Use when the anesthesiologist medically directs a single CRNA. |
GC | Service performed in part by a resident under direction of teaching physician | Use when the teaching physician documents appropriate presence and participation during a resident-performed procedure. |
PO | Outpatient hospital prior authorization present (note: PO sometimes used for payer-specific codes) | Use when payer requires reporting of prior authorization indicator as specified. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 207P00000X | Dermatology | Dermatologists commonly perform laser scar fenestration and scar remodeling procedures. |
| 207L00000X | Plastic Surgery | Plastic surgeons perform scar revision and adjunctive laser fenestration as part of reconstructive care. |
| 2080P0200X | General Surgery | General surgeons with cosmetic or reconstructive focus may perform scar interventions in some settings. |
| 363LP0800X | Laser Surgery (Dermatologic) | Providers specialized in laser surgery or procedural dermatology perform fractional ablative techniques. |
| 367A00000X | Anesthesiology | Anesthesiologists or CRNAs may be involved when general or monitored anesthesia care is required. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
T31.0 | Burns involving less than 10% of body surface | Partial- or full-thickness burns that healed with scarring potentially treated with laser fenestration to improve flexibility and appearance. |
T31.1 | Burns involving 10-19% of body surface | Larger healed burn areas resulting in scar contracture or hypertrophic scarring amenable to fenestration techniques. |
L90.5 | Scar and fibrous tissue hyperplasia | Describes hypertrophic scars or keloids and scar tissue remodeling targets for fractional ablative laser fenestration. |
S30.0XXA | Contusion of lower back, initial encounter (example traumatic soft tissue injury) | Traumatic soft tissue injuries that heal with scarring; fenestration may be used as part of scar management. |
Q82.9 | Congenital anomaly of skin, unspecified | Some congenital scarring or thickened skin lesions may be treated with fenestration techniques in selected cases. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
17110 | Destruction, extensive, first lesion | May be used for destruction of superficial scar tissue or lesions when fenestration is not appropriate; sometimes performed prior to or instead of laser fenestration for discrete scar elements. |
15777 | Microdermabrasion; per session (note: 15777 is microdermabrasion code) | Performed for superficial scar smoothing and adjunctive resurfacing in staged scar management following fenestration. |
15877 | Revision of hypertrophic scar, complicated | Represents surgical scar revision that may be combined with or staged before fractional ablative fenestration to improve contour. |
97035 | Ultrasound therapy, each 15 minutes (note: physical therapy modality) | Nonoperative adjunctive therapy for scar pliability used in postoperative rehabilitation after laser fenestration. |
99070 | Supplies and materials, unless included in the procedure | Used to bill for special supplies or disposables not included in the laser procedure bundle when allowed by payor policy. |