HCPCS Q4270: Complete Skin Lesion Removal, Per Square Centimeter - OpenPayer

Summary & Overview

HCPCS Q4270: Complete Skin Lesion Removal, Per Square Centimeter

HCPCS Level II code Q4270 represents an add-on billing unit for complete skin lesion excision measured per square centimeter and reported in addition to a primary procedure. As an area-based add-on code, it standardizes reporting for procedures where removal area affects resources and complexity. Nationally, area-based add-ons influence surgical reimbursement consistency and coding transparency across outpatient and office settings.

Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of typical billing contexts, payer coverage considerations, and operational implications for reporting an area-based skin lesion excision add-on. The publication summarizes common modifiers used with area-based add-ons, typical sites of service, and how Q4270 is applied alongside primary excision procedures.

The content covers benchmarks and coding practice topics relevant to billing staff, revenue cycle managers, and clinicians involved in minor surgical procedures. It addresses clinical context for skin lesion excision, documentation elements tied to area measurement, and where to expect variation in payer processing. Data not available in the input is explicitly noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareQ4270HCPCS Level IIskin lesion excisionsurgical add-onprocedure codingambulatory surgeryarea-based billingrevenue cycle

Billing Code Overview

HCPCS Level II code Q4270 describes complete skin lesion removal, billed per square centimeter as an add-on service to be listed separately in addition to the primary procedure. The service type is surgical excision of skin lesions, with billing tied to the treated surface area measured in square centimeters. The typical site of service for this add-on is ambulatory surgical settings, hospital outpatient departments, or physician office procedure rooms, depending on where the primary procedure is performed.

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A patient with a full-thickness skin defect from trauma, surgical excision, or chronic wound requires coverage with a complete skin graft billed per square centimeter. A typical scenario: a 62-year-old male with a large non-healing lower-leg surgical wound after tumor excision is evaluated in the outpatient surgical clinic. The surgeon measures the defect, harvests a split- or full-thickness graft from a donor site, and places a complete skin graft over the recipient bed. The procedure is documented with graft dimensions in square centimeters to support reporting of the add-on HCPCS Level II code Q4270 (complete sl, per square centimeter). The workflow includes preoperative assessment and consent, intraoperative measurement of the grafted area, donor-site management, graft fixation (sutures, staples, or adhesives), dressing application, and scheduled postoperative graft checks and dressing changes. Billing uses Q4270 in addition to the primary procedure code that describes graft harvest or wound debridement; appropriate modifiers are appended as indicated by payer rules and clinical circumstances.

Coding Specifications

Modifier	Description	When to Use
`00`	No modifier — standard reporting	When no special circumstance or modifier applies and the service is billed normally.

HCPCS Q4336: Artacent c per Square Centimeter (Add-on)

HCPCS-LEVEL-II-Q4256-AREA-BASED-PROCEDURAL-ADD-ON-PER-SQ-CM

HCPCS Level II Q4256: Area-Based Procedural Add-On, Per sq cm

HCPCS-Q4437-REVIVAL-AGENT-PER-SQ-CM-ADDON

HCPCS Q4437: Revival Agent Application, Per Square Centimeter

HCPCS-Q4340-SIMPLIGRAFT-PER-SQ-CM-SKIN-SUBSTITUTE-ADD-ON

HCPCS Level II Q4340: Simpligraft per Square Centimeter

HCPCS-Q4384-AXOLOTL-DUALGRAFT-ULTRA-GRAFT-PRODUCT-PER-CM2

HCPCS Q4384: Axolotl Dualgraft Ultra Graft Product, Per cm2

HCPCS-Q4202-KEROXX-OPHTHALMIC-VISCOELASTIC-1CC

HCPCS Level II Q4202: Keroxx (2.5g/cc) 1cc

HCPCS-Q2036-INFLUENZA-VACCINE-FLULAVAL-IM-IN-AGE-3-PLUS

HCPCS Q2036: Influenza Vaccine (Flulaval) IM for Ages 3+

HCPCS-Q4349-MANTLE-DERMAL-MATRIX-PER-SQ-CM

HCPCS Q4349: Mantle Dermal Matrix, Per Square Centimeter

HCPCS-Q4177-FLOWERAMNIOFLO-0-1-CC-BIOLOGIC-DOSE

HCPCS Level II Q4177: Floweramnioflo, 0.1 cc

HCPCS-Q4285-NUDYN-DL-MESH-PER-SQ-CM-ADD-ON

HCPCS Q4285: Nudyn dl Mesh, Per Square Centimeter (Add-on)

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Taxonomy Code	Specialty	Notes
`208100000X`	General Surgery	Most common specialty performing skin grafting for trauma and surgical excision.
`207P00000X`	Plastic Surgery	Frequent provider for complex grafting, reconstruction, and donor-site management.
`2086S0102X`	Dermatology	Performs grafting for cutaneous defects, tumor excision coverage, and chronic wounds.
`208000000X`	Family Medicine	May perform smaller grafts in clinic settings or coordinate care in wound centers.
`261QM0800X`	Podiatry	Performs skin grafting for foot and ankle wounds and diabetic limb salvage when applicable.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`S81.811A`	Laceration without foreign body of right knee, initial encounter	Traumatic soft-tissue loss requiring skin graft coverage of the defect.
`S81.812A`	Laceration without foreign body of left knee, initial encounter	As above for left-sided injuries needing grafting.
`L98.4`	Non-pressure chronic ulcer of skin	Chronic wound that may require debridement and skin grafting for closure.
`C44.419`	Squamous cell carcinoma of skin of unspecified part of trunk, initial encounter	Post-excisional defect after tumor removal that requires skin graft reconstruction.
`E11.621`	Type 2 diabetes mellitus with foot ulcer	Diabetic foot ulcer leading to soft-tissue defects managed with grafting in limb salvage.
`T81.31XA`	Disruption of external operation (surgical) wound, initial encounter	Wound breakdown after prior surgery where grafting may be used to re-establish coverage.
`L89.153`	Pressure ulcer of right lower leg, stage 3	Pressure-related full-thickness skin loss potentially requiring grafting for closure.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`15002`	Surgical preparation or creation of recipient site; first 100 sq cm or less, or initial separation of soft tissue	Often reported for preparation of the recipient wound bed prior to application of a full-thickness skin graft; pairs with area-based graft add-on reporting.
`15271`	Full-thickness skin graft, head, neck, hands, feet, genitalia; up to 20 sq cm	Primary CPT for full-thickness graft harvest and placement in specific anatomic sites; `Q4270` may be used as add-on per square centimeter when payer requires HCPCS area reporting.
`15330`	Split-thickness autograft, face, scalp, eyelids, ears, orbits, nose; up to 25 sq cm	Split-thickness graft codes used when thin grafts are harvested; `Q4270` may supplement area-based billing when applicable.
`97597`	Debridement (selective) of open wound, first 20 sq cm or less	Commonly performed prior to grafting to prepare a healthy vascular bed; performed same day or during earlier wound care visits.
`12001`	Simple repair of superficial wound; 2.5 cm or less	Minor closure or donor-site closure codes may be billed for suture repair of harvest sites alongside grafting procedures.

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