Summary & Overview

CPT 0420T: Destruction of >100 Subcutaneous Neurofibromas of Trunk and Extremities

CPT code 0420T denotes destruction of more than 100 subcutaneous neurofibromas of the trunk and extremities using non‑excisional techniques such as laser or electrodesiccation. The code captures a high‑volume lesion destruction service used in patients with extensive cutaneous neurofibromatosis and is relevant for procedural coding, payer coverage decisions, and resource planning for dermatology and surgical outpatient services. Nationally, services for extensive neurofibroma destruction have implications for procedure utilization, facility resource allocation, and reimbursement policy given the procedural complexity and potential need for operative settings.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the code’s clinical context, typical sites of service, and the types of clinical teams likely to perform the procedure. The publication presents benchmark considerations and common billing modifiers associated with procedural and facility reporting, highlights policy and coverage themes that affect payment and prior authorization practices, and explains documentation elements relevant to coding this high-volume lesion destruction service. Data not available in the input for specific associated taxonomies, ICD-10 diagnoses, and related codes is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare0420TCPTneurofibromalesion destructiondermatologyoutpatient surgerylaser therapyelectrodesiccationprocedure coding

Billing Code Overview

CPT code 0420T describes destruction of more than 100 subcutaneous neurofibromas of the trunk and extremities. Neurofibromas are usually benign tumors arising from nerve sheaths; this code covers non-excisional destruction techniques such as laser or electrodesiccation when applied to numerous lesions extending below the skin.

Service Type: Lesion destruction (non-excisional), dermatologic/soft-tissue procedure

Typical Site of Service: Ambulatory surgical center or hospital outpatient department; dermatology or surgical clinic setting

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 34-year-old patient with neurofibromatosis type 1 presents to a dermatology clinic complaining of multiple symptomatic subcutaneous neurofibromas on the trunk and extremities causing pain and functional impairment. After history, physical exam, and review of prior imaging, the dermatologic surgeon schedules an outpatient operative session to destroy greater than 100 subcutaneous neurofibromas of the trunk and extremities using laser ablation and electrosurgical electrodesiccation. The clinical workflow includes preoperative evaluation with informed consent and problem-focused history, marking and photographing lesion distribution, intraoperative lesion destruction under local anesthesia with monitored sedation as needed, hemostasis, and application of wound dressings. Postoperative instructions address wound care, signs of infection, pain control, and follow-up for wound checks and scar management. Documentation includes lesion count, anatomic distribution, technique(s) used, anesthesia, estimated blood loss if applicable, any complications, and whether services were performed bilaterally or in multiple sessions. Typical site of service is an outpatient ambulatory surgery center or hospital outpatient department. Service type: dermatologic surgical destruction of multiple subcutaneous neurofibromas (destruction rather than excision). Typical patient scenario: adult with known neurofibromatosis presenting for removal/destruction of numerous symptomatic subcutaneous neurofibromas of trunk and extremities.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services

Taxonomy Code	Specialty	Notes
207Y00000X	Dermatology	Dermatologic surgeons commonly perform lesion destruction using laser or electrosurgery.
208000000X	General Surgery	General surgeons may treat extensive subcutaneous tumors when dermatologic resources are not available.
2086S0113X	Plastic Surgery	Plastic surgeons manage reconstruction and complex soft-tissue issues after lesion removal or destruction.
207RP1001X	Surgical Dermatology	Physicians with surgical dermatology focus often manage large-volume skin tumor destruction.
365N00000X	Anesthesiology	Anesthesiologists provide monitored anesthesia care or general anesthesia for complex or lengthy procedures.

CPT Code	Description	Relationship to This Procedure
`10060`	Incision and drainage of abscess; simple or single	May be performed if a lesion becomes infected pre- or post-destruction requiring drainage.
`17000`	Destruction of premalignant lesions (e.g., actinic keratoses); first lesion	Different destruction CPT for superficial skin lesions; not used for subcutaneous neurofibromas but conceptually similar techniques.
`14040`	Adjacent tissue transfer or rearrangement, trunk; 30.1 sq cm to 60.0 sq cm	May be necessary when excision (rather than destruction) and soft-tissue reconstruction are required for large defects.
`15734`	Muscle, myocutaneous or fasciocutaneous flap with microvascular anastomosis	Relevant in extensive resections requiring complex reconstruction when excision (not destruction) is performed.
`99499`	Unlisted evaluation and management service	May be used for billing nonstandard preoperative coordination or extended care activities not captured elsewhere.

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