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    v1.0.31
    OpenPayerBilling CodesTemporary CodesHCPCS hcpcs-q4122-dermacell-acellular-dermal-matrix-graft-per-cm
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    HCPCS Q4122: Dermacell AWM Porous, Skin Substitute, Per sq cm

    Medicare pays $133 on average nationally for this procedure.

    HCPCS Level II code Q4122 identifies Dermacell / Dermacell AWM porous skin substitute billed per square centimeter as an add-on in conjunction with a primary procedure; the service represents use of an acellular dermal matrix graft for wound or soft-tissue repair, typically supplied and applied in surgical settings such as operating rooms or procedure suites where the graft is placed to support tissue coverage and healing.

    For related coverage guidance, see recent payer policy updates: Truvada (Emtricitabine and Tenofovir Disoproxil Fumarate) for HIV Prevention and Treatment, HIV/AIDS Pharmacologic Prevention and Treatment, Long-Acting Injectable Antiretroviral Agents for HIV.

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is an adult with a full-thickness skin defect or chronic non-healing wound (for example, a large traumatic soft-tissue loss, post-oncologic excision defect, or a chronic diabetic foot ulcer) requiring placement of an acellular dermal matrix graft. The procedure uses Q4122 Dermacell (porous) as an add-on billed per square centimeter in conjunction with a primary wound reconstruction or coverage procedure. Workflow: preoperative assessment in clinic with wound measurement and debridement planning; operative debridement and preparation of the wound bed under appropriate anesthesia in an operating room or procedure suite; application of the Dermacell allograft sized to wound dimensions and secured to surrounding tissue; adjunctive measures such as negative-pressure wound therapy or split-thickness skin grafting may be performed during the same operative session; postoperative documented dressing changes, wound checks, and rehabilitation. Typical sites of service include the hospital operating room, ambulatory surgery center, or hospital outpatient department, depending on complexity and patient comorbidities. Common clinical reasons for use include reconstruction after skin cancer excision, coverage of exposed tendon or bone, and management of complex infected or ischemic wounds where durable soft-tissue coverage is required.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    11042Debridement, subcutaneous tissue, first 20 sq cm or less;Often performed immediately prior to Q4122 placement to prepare a clean wound bed for grafting.
    15271Application of skin substitute graft, first 100 sq cm or lessMay be used when an engineered skin substitute or adjunctive grafting is applied along with Dermacell during reconstruction.
    15120Split-thickness autograft, trunk, arms, legs; first 100 sq cm or less, includes harvesting and preparationUsed when a split-thickness skin graft is placed over Dermacell as part of definitive coverage.
    13160Secondary closure of surgical wound or dehiscence; trunk, arms, legs; simple or complicatedMay be billed for closure procedures following placement of dermal matrix if appropriate.
    29581Application of negative pressure wound therapy (simple), any size dressingOften used as an adjunct after Dermacell application to promote graft take and wound healing.

    Related Modifiers

    9 rows

    ModifierDescriptionWhen to Use
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…
    82Modifier 82 is appended to a surgical CPT code to indicate that an attending physician acted as an assistant because a qualified resident surgeon was unavailable. In teaching hospitals it documents…- When to use: Append modifier 82 in teaching-hospital settings to indicate a physician served as an assistant surgeon because a qualified resident surgeon was unavailable (includes situations where…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207P00000X
    208800000X
    207L00000X
    208600000X
    261Q00000X
    163WU0100X
    208VP0014X
    152WL0500X

    Related Payer Policy Updates

    Specialty: Infectious Disease1 / 3

    10 rows

    PolicyPayerEffective Date
    Truvada (Emtricitabine and Tenofovir Disoproxil Fumarate) for HIV Prevention and Treatmentpremerabluecrossofwashington2026-10-01
    HIV/AIDS Pharmacologic Prevention and Treatmentpremerabluecrossofwashington2026-10-01
    Long-Acting Injectable Antiretroviral Agents for HIVColorado Rocky Mountain Health Plans2026-10-01
    B-Hemolytic Streptococcus TestingOscar Health2026-10-01
    Human Immunodeficiency Virus (HIV) — Coverage Criteria for Testing and Resistance AssaysOscar Health2026-10-01
    Hepatitis Testing (A, B, C, D) Coverage CriteriaOscar Health2026-10-01
    Lyme Disease Testing Coverage CriteriaOscar Health2026-10-01
    Pathogen Panel TestingOscar Health2026-10-01
    Diagnostic Testing of Common Sexually Transmitted InfectionsOscar Health2026-10-01
    Coronavirus Testing in the Outpatient SettingOscar Health2026-10-01

    Related Codes

    HCPCS-LEVEL-II-Q4139-INJECTABLE-AMNIOMATRIX-BIODMATRIX-1-CC

    HCPCS Q4139: Amniomatrix or Biodmatrix, Injectable, 1 cc

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

    HCPCS Q4256: MLG-complete Skin Graft Material, Per Sq Cm

    HCPCS-LEVEL-II-Q5132-ADALIMUMAB-AFZB-ABRILADA-10MG-INJECTION

    HCPCS Level II Q5132: Injection, adalimumab-afzb (Abrilada), 10 mg

    HCPCS-Q0035-CARDIOKYMOGRAPHY-CARDIAC-MOTION-RECORDING

    HCPCS Level II Q0035: Cardiokymography

    HCPCS-Q0081-INFUSION-THERAPY-NON-CHEMOTHERAPEUTIC-PER-VISIT

    HCPCS Level II Q0081: Infusion Therapy, Non‑Chemotherapeutic, Per Visit

    HCPCS-Q0083-CHEMOTHERAPY-NON-INFUSION-ADMINISTRATION

    HCPCS Q0083: Chemotherapy Administration, Non-Infusion Methods

    HCPCS-Q0084-CHEMOTHERAPY-INFUSION-ADMINISTRATION-PER-VISIT

    HCPCS Q0084: Chemotherapy Infusion Administration, Per Visit

    HCPCS-Q0085-CHEMOTHERAPY-INFUSION-PLUS-OTHER-TECHNIQUES-PER-VISIT

    HCPCS Q0085: Chemotherapy Infusion Plus Other Technique(s), Per Visit

    HCPCS-Q0091-PAP-SMEAR-SPECIMEN-COLLECTION-TRANSPORT

    HCPCS Q0091: Screening Papanicolaou Smear Collection and Transport

    HCPCS-Q0092-PORTABLE-XRAY-EQUIPMENT-SETUP

    HCPCS Q0092: Set-up Portable X-ray Equipment

    Showing 1–10 of 629

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    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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