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    v1.0.30
    OpenPayerBilling CodesOther Procedures on the Tongue and Floor of MouthCPT cpt-41599-tongue-floor-of-mouth-procedure-unlisted
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    CPT 41599: Unlisted Procedure on Tongue or Floor of Mouth

    CPT code 41599 is an unlisted procedure code used to report a surgical or procedural service performed on the tongue or floor of the mouth when no specific CPT code exists; the service type is an oral/oropharyngeal surgical procedure typically performed in an outpatient surgical suite, ambulatory surgery center, or hospital operating room and is billed as an unlisted head and neck/oral procedure that requires documentation of the procedure performed, operative report, and supporting clinical indications.

    For related coverage guidance, see recent payer policy updates: Orthopedic Joint Procedures of the Knee for Managed Medicaid (MMC), Health and Recovery Plan (HARP), Child Health Plus (CHP), and Essential Plan (EP) Members, Autologous Chondrocyte Transplantation or Implantation Corporate Medical Policy, Autologous Platelet-Derived Growth Factors (Platelet-Rich Plasma [PRP]).

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 58-year-old male presents to an otolaryngology clinic with a 2-cm indurated lesion on the lateral tongue that is symptomatic and suspicious for malignancy on exam. After biopsy confirms an unusual lesion requiring an excisional procedure not described by a specific CPT, the surgeon schedules an operative procedure on the tongue to excise the lesion with local flap reconstruction. The clinical workflow includes preoperative assessment (history, focused head and neck exam), informed consent, intraoperative excision of the lesion on the tongue, hemostasis and limited reconstruction of the floor of mouth/tongue defect, pathology specimen submission, and postoperative wound care with a follow-up visit.

    Typical site of service

    • Ambulatory surgical center for uncomplicated excision with local reconstruction

    • Hospital outpatient department for larger or complex procedures, or when general anesthesia is required

    Typical service type

    • Surgical: excision/operative procedure involving the tongue or floor of mouth where no specific CPT code applies

    Typical patient scenario

    • Adult with a localized tongue lesion (benign or malignant) requiring removal and repair not described by an existing CPT code, e.g., complex partial glossectomy with local flap, debridement of unusual lesions on the floor of mouth, or atypical reconstructive maneuvers.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    41030Excision of tumor or cyst of floor of mouth; simpleCommonly used for small, well-defined floor-of-mouth lesions; may be used instead of an unlisted code when applicable.
    41120Glossectomy, partial; hemiglossectomyUsed for standard partial glossectomy; unlisted code 41599 applies when excision/reconstruction does not match standard descriptions.
    41125Glossectomy, partial; radical, including hemiglossectomy with radical neck dissectionUsed for radical resections; informs extent when complex resections are performed alongside unlisted tongue procedures.
    21015Excision of benign tumor or cyst of jaw; intraoral approachRelevant when oral cavity lesions require intraoral access and differential coding across sites.
    13131Repair, complex, forehead, cheeks, chin, mouth, neck; 2.5 cm to 7.5 cmUsed for complex repair or flap procedures in the oral region; may be billed for soft tissue reconstruction aspects when anatomy and size align.
    88305

    Related Modifiers

    14 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…
    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…
    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…

    Showing 1–10 of 14

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207X00000X
    207L00000X
    2084P0800X
    2279P3900X
    224ZL0004X
    226300000X
    163WX0106X
    251S00000X

    Related Payer Policy Updates

    Specialty: Orthopedics/Musculoskeletal1 / 3

    10 rows

    PolicyPayerEffective Date
    Orthopedic Joint Procedures of the Knee for Managed Medicaid (MMC), Health and Recovery Plan (HARP), Child Health Plus (CHP), and Essential Plan (EP) Membersuniverahealthcare2027-01-01
    Autologous Chondrocyte Transplantation or Implantation Corporate Medical Policybcbsvermont2026-12-01
    Autologous Platelet-Derived Growth Factors (Platelet-Rich Plasma [PRP])Cigna2026-10-15
    Metatarsophalangeal Joint ReplacementCigna2026-10-15
    Shoulder Arthroplasty (Total, Partial, Reverse, Revision and Resurfacing)univerahealthcare2026-10-15
    Hip Arthroplasty (partial and total hip replacement)univerahealthcare2026-10-15
    Artificial Lumbar Intervertebral Disc (Lumbar Total Disc Arthroplasty)univerahealthcare2026-10-15
    Osteochondral Grafting of the Kneeuniverahealthcare2026-10-15
    Lumbar Fusion (arthrodesis) with decompressionuniverahealthcare2026-10-15
    Metal-on-Metal Total Hip Resurfacinguniverahealthcare2026-10-15

    Related Codes

    CPT-41510-TONGUE-TO-LIP-ADHESION-FOR-ALVEOLAR-RECONSTRUCTION-AIRWAY

    CPT 41510: Tongue-to-Lip Adhesion for Alveolar and Airway Reconstruction

    CPT-41512-TONGUE-BASE-SUTURE-SUSPENSION-RETROLINGUAL-AIRWAY

    CPT 41512: Tongue-Base Suspension to Enlarge Retrolingual Airway

    CPT-41520-LINGUAL-FRENUM-REPAIR-Z-PLASTY

    CPT 41520: Frenuloplasty for Lingual Frenum Deformity

    CPT-41530-RADIOFREQUENCY-ABLATION-TONGUE-BASE-RTVR

    CPT 41530: Radiofrequency Tissue Volume Reduction of Tongue Base

    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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    Level IV surgical pathology, gross and microscopic examination
    Pathology CPT commonly billed for specimen analysis from tongue/floor-of-mouth excisions.