Q4355 Abiomend xplus Membrane HCPCS Reimbursement | OpenPayer

Summary & Overview

HCPCS Q4355: Abiomend xplus Membrane, Per Square Centimeter

HCPCS Level II code Q4355 identifies the Abiomend xplus membrane and Abiomend xplus hydromembrane, billed per square centimeter as an add-on in addition to a primary surgical procedure. This code matters nationally as biologic membranes are commonly used across multiple surgical specialties—such as reconstructive, oral/maxillofacial, and soft-tissue repair—to support healing and reduce complications when native tissues are insufficient. Accurate use of an add-on HCPCS code like Q4355 affects clinical documentation, claims processing, and appropriate payment for materials provided during surgery.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for membrane use, payer coverage considerations, and the types of benchmarks typically examined for add-on biologic supply codes. The publication outlines common billing practices for per-square-centimeter add-on codes, clarifies where this service is typically performed (operating room or procedure suite), and highlights areas where policy updates or payer-specific edits can affect reimbursement. Data not available in the input will be noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareQ4355HCPCS Level IIabiomendbiologic membranesurgical adjunctadd-on codeper square centimeteroperative supplywound regeneration

Billing Code Overview

HCPCS Level II code Q4355 describes the use of Abiomend xplus membrane and Abiomend xplus hydromembrane, billed per square centimeter as an add-on, listed separately in addition to the primary procedure. The code represents a biologic membrane product used to support tissue repair and regeneration during surgical procedures.

Service Type: Surgical adjunct / biologic membrane placement

Typical Site of Service: Operating room or procedure suite, where surgical wound management or reconstructive procedures are performed.

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult with a full-thickness or complex soft-tissue defect of the lower extremity (e.g., chronic non-healing ulcer after traumatic debridement or surgical excision of infected tissue) requiring placement of an adjunctive biologic wound matrix. The membrane product Q4355 (Abiomend xplus membrane / hydromembrane) is billed per square centimeter as an add-on material used in addition to a primary wound or reconstructive procedure.

Clinical workflow:

The patient presents to an outpatient wound clinic or hospital operating room for evaluation of a chronic or complex wound.
Wound bed preparation is performed including debridement of nonviable tissue, irrigation, and control of infection; sharp debridement and harvesting of local tissue may occur under local, regional, or general anesthesia.
After achieving a clean, well-vascularized bed, the surgeon measures the defect and applies the Q4355 membrane to provide a biologic scaffold and moisture control. The membrane is secured as indicated and covered with appropriate dressings.
The procedure is typically billed in conjunction with a primary CPT code for debridement, grafting, or soft-tissue reconstruction; Q4355 is an add-on supply code reported per square centimeter.
Typical sites of service include outpatient wound care centers, hospital operating rooms, and ambulatory surgical centers. Patients often require follow-up visits for dressing changes and evaluation of integration and healing of the membrane.

Coding Specifications

HCPCS Level II Q4333: Ardeograft Per Square Centimeter, Add-On

HCPCS-Q4336-ARTACENT-PER-SQUARE-CENTIMETER-ADD-ON

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

HCPCS-Q5006-INPATIENT-HOSPICE-CARE

HCPCS Level II Q5006: Hospice Care in Inpatient Hospice Facility

HCPCS-Q4161-BIO-CONNEKT-WOUND-MATRIX-PER-SQCM

HCPCS Q4161: Bio-connekt Wound Matrix, Per Square Centimeter

HCPCS-Q4236-CAREPATCH-PER-SQ-CM-WOUND-CARE-ADD-ON

HCPCS Q4236: Carepatch, per Square Centimeter (Add-on Supply)

HCPCS-Q4265-NEOSTIM-PER-SQ-CM-ADD-ON

HCPCS Level II Q4265: Neostim per Square Centimeter, Add-On

HCPCS-Q5140-ADALIMUMAB-FKJP-BIOSIMILAR-INJECTION-1MG

HCPCS Q5140: Injection, adalimumab-fkjp, biosimilar, 1 mg

HCPCS-Q4183-SURGIGRAFT-PER-SQ-CM-ADD-ON

HCPCS Q4183: Surgigraft, per square centimeter (add-on)

HCPCS-Q1004-NEW-TECHNOLOGY-INTRAOCULAR-LENS-CATEGORY-4

HCPCS Q1004: New-Technology Intraocular Lens, Category 4

HCPCS-Q4281-BARRERA-DRESSING-PER-SQUARE-CENTIMETER

HCPCS Level II Q4281: Barrera dressing, per square centimeter

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Modifier	Description	When to Use
`00`	No modifier — standard service	Use when no special circumstances apply and payer requires no modifier.
`22`	Increased procedural services	Use when work required is substantially greater than typical for the primary procedure (document increased work).
`23`	Unusual anesthesia — medically contraindicated	Use when procedure performed without usual anesthesia for medical reasons.
`52`	Reduced services	Use when the primary procedure was partially reduced or not completed as planned.
`53`	Discontinued procedure	Use when procedure is terminated due to extenuating circumstances.
`54`	Surgical care only	Use when reporting only the surgical component and postoperative care is by another provider.
`55`	Postoperative management only	Use when reporting only postoperative care by a provider other than the surgeon.
`56`	Preoperative management only	Use when reporting only preoperative evaluation and management.
`62`	Two surgeons	Use when two surgeons work together as primary surgeons performing distinct portions of the procedure.
`78`	Unplanned return to OR by same physician following initial procedure	Use when patient returns to operating room for related procedure during the global period.
`AS`	Ambulatory surgical center (facility)	Use when service is provided in an ambulatory surgical center setting, if required by payer.
`CO`	Cast application (example) — payer-specific	Use when payer requires reporting of a cast-related modifier in conjunction with the procedure; follow payer rules.
`QX`	Assistant surgeon – searchable CPT modifier for non-physician assistant	Use when a qualified non-physician assistant at surgery performs assisting duties and payer allows.
`QY`	Service furnished by a physician assistant under physician supervision	Use when a physician assistant provides the service under required supervision.

Taxonomy Code	Specialty	Notes
207X00000X	General Surgery	Commonly performs debridement and placement of biologic membranes for complex wounds.
2080P0001X	Plastic Surgery	Performs reconstructive procedures and soft-tissue grafting using biologic membranes.
2086S0123X	Wound Care (Surgical) / Advanced Wound Care	Specialists in complex wound management who apply biologic matrices in clinic or OR.
208D00000X	Podiatry (Surgery)	Frequently manages lower-extremity diabetic foot wounds requiring biologic membrane application.
207L00000X	Vascular Surgery	Manages ischemic limb wounds where biologic membranes may be used after revascularization and debridement.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`L97.421`	Non-pressure chronic ulcer of right calf with necrosis of muscle	Chronic lower-extremity ulcers commonly require debridement and biologic membranes to promote healing.
`L97.422`	Non-pressure chronic ulcer of left calf with necrosis of muscle	Bilateral or contralateral chronic ulcers may be treated similarly with adjunctive membranes.
`L97.329`	Non-pressure chronic ulcer of left ankle with unspecified severity	Ulcers of the ankle often need biologic matrices after debridement to support granulation.
`E11.621`	Type 2 diabetes mellitus with foot ulcer	Diabetic foot ulcers are frequent indications for biologic membranes to support wound closure.
`S81.001A`	Unspecified open wound, right knee, initial encounter	Traumatic open wounds that require reconstruction or scaffolding may use `Q4355` as an adjunct.
`T79.A11A`	Burn of unspecified degree of right lower leg, initial encounter	Partial- and full-thickness burns may be managed with biologic membranes to facilitate healing.
`I96`	Gangrene, not elsewhere classified	After debridement of gangrenous tissue, biologic membranes can be used to aid soft-tissue reconstruction.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`11042`	Debridement, subcutaneous tissue (eg, muscle, tendon), without skin grafting; first 20 sq cm or less	Often performed prior to placement of `Q4355` to prepare the wound bed for biologic membrane application.
`11043`	Debridement, muscle and/or fascia, first 20 sq cm or less	Used when deeper debridement is required before applying the membrane in complex wounds.
`15271`	Application of skin substitute graft to trunk, arms, legs; first 100 sq cm or less	Used when a skin substitute graft is applied in conjunction with or after membrane placement; complementary reconstructive step.
`15999`	Unlisted procedure, soft tissue	Occasionally used for novel or unlisted adjunctive soft-tissue procedures performed with membrane placement when no specific code exists.
`97597`	Debridement (eg, high pressure waterjet, sharp) with topical therapy; first 20 sq cm	Outpatient wound clinic debridement and application of topical therapies may precede membrane placement in clinic-based workflows.

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