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    v1.0.30
    OpenPayerBilling CodesOther Procedures on the LipsCPT cpt-40799-unlisted-procedure-lips
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    CPT 40799: Unlisted Procedure on the Lips

    CPT code 40799 is an unlisted procedure code used to report surgical or procedural services performed on the lips when no specific CPT code exists; this typically covers minor lip excisions, repairs, or lesion removals and is reported as a surgical procedure performed in an outpatient clinic, ambulatory surgical center, or hospital outpatient setting.

    For related coverage guidance, see recent payer policy updates: Destruction of Pre-Malignant Skin Lesions, Onychomycosis diagnostic testing and coverage, Treatment of Capillary Malformations (Port Wine Stains).

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A patient presents to an outpatient ambulatory surgery center or physician office with a lip lesion or deformity requiring a procedure that does not have a specific CPT code. Typical scenarios include excision of an unusual benign or malignant lesion of the lip, complex primary closure of a traumatic lip laceration with atypical anatomy, revision of prior lip surgery when no specific code exists, or limited reconstructive work on the lip following Mohs surgery where standard lip repair codes are not applicable. The workflow begins with evaluation by a dermatologist, plastic surgeon, or oral and maxillofacial surgeon who documents history, lesion characteristics (size, depth, location on upper or lower lip), and discusses risks and alternatives. Preoperative photography and local anesthesia administration are common. The procedure is performed in a procedure room or ambulatory surgery center; documentation should note technique, extent of tissue removal or repair, time, and any unusual difficulty. Postoperative instructions, pathology submission if excision performed, and follow-up arrangements complete the clinical episode. Typical site of service: outpatient ambulatory surgery center, hospital outpatient department, or physician office procedure suite. Service type: surgical procedure of the lip reported with an unlisted procedure code when no specific lip procedure CPT exists.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    12001Simple repair of superficial wounds of face, ears, eyelids, nose, lips; 2.5 cm or lessUsed for straightforward primary closure of small lip lacerations when applicable instead of an unlisted code.
    12011Simple repair of superficial wounds of face, ears, eyelids, nose, lips; 2.6 cm to 5.0 cmAlternative for larger simple lip lacerations that have specific length-based codes.
    14040Adjacent tissue transfer or rearrangement, forehead, cheeks, chin, mouth, neck, axillae, genitalia, trunk and/or extremities; defect 30 sq cm or lessCommon reconstructive technique for lip defects; used when a specific flap or local tissue rearrangement code applies.
    41515Excision, lesion of lip; single lesion, up to 1.0 cmSpecific excision code used when lesion size and location match the descriptor, rather than 40799.
    13131Repair, complex, forehead, cheeks, chin, mouth, neck, axillae, genitalia, hands and/or feet; 1.1 cm to 2.5 cmUsed for complex layered repairs on the lip when a defined code covers the complexity and size.
    88305Level IV surgical pathology, gross and microscopic examinationOften billed by the pathology laboratory when an excised lip lesion is submitted for histopathology; reported by the laboratory using the technical component TC and professional 26 as appropriate.

    Related Modifiers

    13 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…
    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…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    51Modifier –51 (Multiple Procedures) is used when the same provider performs multiple procedures in the same session to identify secondary, non‑exempt procedures and indicate payment reduction logic…- Use modifier -51 when the same provider performs multiple distinct procedures during the same patient encounter: report the highest‑valued procedure first (no modifier) and append -51 to…
    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…
    58Modifier 58 (Staged or related procedure/service by the same physician during the postoperative period) indicates that a subsequent procedure performed by the same provider during the…- Use modifier 58 when the same physician/QHP performs a procedure during the postoperative/global period of an earlier procedure and the subsequent procedure is either planned or anticipated…
    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…
    66Modifier 66 (Surgical Team) is used when three or more surgeons act as primary surgeons on a single, highly complex procedure. The AMA defines it for use when a surgical team — often composed of…- Use modifier 66 when three or more surgeons act as primary surgeons working collaboratively as a surgical team on a single, highly complex or difficult procedure (for example organ…
    73Modifier 73 indicates a facility-level outpatient hospital or ASC procedure that was discontinued after the patient was prepared and taken to the procedure/operating room but before any anesthesia…- When to use: Apply CPT modifier 73 on the FACILITY (outpatient hospital or ASC) claim when the patient has been fully prepared and physically taken into the procedure/operating room but the…

    Showing 1–10 of 13

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207P00000X
    207L00000X
    207Q00000X
    2084P0800X
    207V00000X
    111NX0800X
    363LW0102X
    171100000X

    Related Payer Policy Updates

    Specialty: Dermatology1 / 3

    10 rows

    PolicyPayerEffective Date
    Destruction of Pre-Malignant Skin LesionsAnthem2026-10-01
    Onychomycosis diagnostic testing and coverageOscar Health2026-10-01
    Treatment of Capillary Malformations (Port Wine Stains)universityofutahhealthplans2026-09-28
    AnzupgoCigna2026-09-15
    Zevaskyn Coverage for Recessive Dystrophic Epidermolysis BullosaCigna2026-09-01
    Topical Acne-Non-Retinoid ProductsCigna2026-08-15
    Dermatology - Vtama Drug Quantity Management Policy - Per DaysCigna2026-08-15
    Medical Necessity Guidelines: Acne and Rosacea Medicationsharvard pilgrim health care2026-08-11
    Dermatology - Anzupgo Prior Authorization PolicyCigna2026-08-05
    Light Therapy for Dermatologic Conditionsbcbsvermont2026-08-01

    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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