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    v1.0.30
    OpenPayerBilling CodesExcision and Destruction Procedures on the Vestibule of MouthCPT cpt-40818-oral-mucosal-graft-harvest
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    CPT 40818: Oral Vestibular Mucosal Graft Harvest

    Medicare pays $378 on average nationally for this procedure.

    CPT code 40818 describes harvesting mucosa from the oral vestibule for use as a graft at a separate intraoral site; this is an oral mucosal graft procedure (soft tissue grafting) performed typically by an oral maxillofacial surgeon or dentist in an operating room, outpatient surgical suite, or dental clinic and is categorized as a surgical soft-tissue harvesting service.

    For related coverage guidance, see recent payer policy updates: Orthognathic Surgery, Temporomandibular Disorders - Nonsurgical Treatment, Temporomandibular Disorders.

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is a 45-year-old adult presenting to an oral and maxillofacial surgery or otolaryngology clinic with a mucosal defect in the oral cavity or adjacent structures requiring autologous mucosal grafting. Indications include repair of alveolar mucosal defects after tumor excision, closure of oroantral or oronasal fistulae, reconstruction following excision of benign mucosal lesions, augmentation of vestibular depth for prosthetic rehabilitation, or reconstruction after traumatic mucosal loss. Preoperative workup includes history and physical, review of anticoagulation, informed consent, and photographic documentation. In the operating room or procedure suite under local anesthesia with sedation or general anesthesia, the provider harvests a mucosal graft from the vestibule of the mouth (typically buccal mucosa) using sterile technique, controls donor-site hemostasis, and transplants the graft to the recipient site intraorally. Postoperative care includes local wound care, analgesia, antimicrobial coverage as indicated, instructions for diet modification, and follow-up to assess graft take and donor-site healing. Typical sites of service are the hospital operating room, ambulatory surgical center, or an oral surgery procedure room in an outpatient clinic setting.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    21085Reconstruction of maxilla or zygoma with local mucosal flap or graftAlternative or adjunct when larger maxillary mucosal reconstruction is required; may be performed in the same operative session.
    41130Excision of oral mucosa, tumor, lesion; complicatedLesion excision that may create the recipient defect requiring mucosal grafting with 40818.
    40816Vestibuloplasty, requiring mobilization of mucosa and graftingPerformed when vestibular deepening is needed; 40818 may supply autologous mucosa for the graft.
    41015Repair of oral mucosa, complexRecipient-site closure that may use graft harvested under 40818 for definitive repair.
    12051Intermediate repair of wounds (face, ears, eyelids, nose, lips)If external facial wounds require mucosal grafts in complex facial reconstruction, used adjunctively.

    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…
    54Modifier ‑54 (“Surgical care only”) is appended to a CPT surgical procedure when the reporting surgeon performs the intraoperative (surgical) component but does not furnish the preoperative and/or…- Use modifier -54 when the reporting surgeon provided only the intraoperative (surgical) component of a procedure and preoperative and/or postoperative management has been or will be provided by…
    55Modifier –55 indicates the billing provider furnished only postoperative management for a procedure that has a global surgical period. According to AAPC, this modifier is appended to the same CPT…- Use modifier -55 when billing the same CPT surgical code that has a 10- or 90-day global period and you, as a provider other than the original surgeon, furnished ONLY postoperative management (no…
    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…
    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…
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    57CPT® modifier -57 (“Decision for Surgery”) is appended to an Evaluation and Management (E/M) service when that encounter results in the initial decision to perform a major surgery (a procedure with a…- Use modifier 57 when an E/M service provided by the same provider (or same tax ID) on the day of or the day before a major surgical procedure (90‑day global period) results in the initial decision…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207R00000X
    207X00000X
    207P00000X
    207L00000X
    2084P0800X
    246YC3302X
    207WX0200X
    101Y00000X

    Related ICD-10-CM Codes

    22 rows

    ICD-10-CM CodeDescription
    K00.4Disturbances in tooth formation
    K04.7Periapical abscess without sinus
    K11.5Sialolithiasis
    K11.7Disturbances of salivary secretion
    K12.0Recurrent oral aphthae
    K12.1Other forms of stomatitis
    K12.2Cellulitis and abscess of mouth
    K13.0Diseases of lips
    K13.6Irritative hyperplasia of oral mucosa
    L98.0Pyogenic granuloma

    Showing 1–10 of 22

    Related Payer Policy Updates

    Specialty: Dental/Oral & Maxillofacial1 / 2

    10 rows

    PolicyPayerEffective Date
    Orthognathic SurgeryCigna2026-10-15
    Temporomandibular Disorders - Nonsurgical TreatmentCareSource Georgia2026-10-01
    Temporomandibular DisordersAnthem2026-10-01
    Treatment of Temporomandibular Joint DisordersUnitedHealthcare2026-10-01
    IV Moderate Sedation, IV Deep Sedation, and General Anesthesia for Dental ProceduresAmbetter Georgia2026-10-01
    Orthognathic SurgeryPremera Bluecross2026-09-04
    Orthognathic SurgeryPremera Bluecross2026-09-04
    9.02.501 Orthognathic SurgeryPremera Bluecross2026-09-04
    Oral Surgery: Orthodontic Related ProceduresUnitedHealthcare2026-09-01
    Orthognathic SurgeryProvidence Health Plan2026-09-01

    Related Codes

    CPT-40808-ORAL-VESTIBULE-BIOPSY

    CPT 40808: Biopsy, Excision of Vestibule of Mouth

    CPT-40810-EXCISION-ORAL-MUCOSA-SUBMUCOSA-LESION

    CPT 40810: Excision of Lesion of Anterior Oral Mucosa and Submucosa

    CPT-40812-ORAL-MUCOSA-SUBMUCOSA-LESION-EXCISION-SIMPLE-REPAIR

    CPT 40812: Excision of Anterior Oral Mucosa and Submucosa, Simple Repair

    CPT-40814-ORAL-MUCOSA-SUBMUCOSA-EXCISION-COMPLEX-REPAIR

    CPT 40814: Excision of Mucosa and Submucosa with Complex Repair

    CPT-40816-ORAL-MUCOSA-SUBMUCOSA-MUSCLE-EXCISION

    CPT 40816: Excision of Mucosa, Submucosa, and Underlying Muscle of Oral Vestibule

    CPT-40819-FRENULECTOMY-LABIAL-BUCCAL

    CPT 40819: Labial or Buccal Frenectomy

    CPT-40820-ORAL-VESTIBULE-LESION-ERADICATION-NONEXCISIONAL

    CPT 40820: Destruction of Lesion in Oral Vestibule

    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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