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    v1.0.28
    OpenPayerBilling CodesExcision Procedures on the Foot and ToesCPT cpt-28090-foot-tendon-lesion-excision-synovectomy
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    CPT 28090: Excision Lesion of Tendon/Tendon Sheath with Synovectomy

    Medicare pays $486 on average nationally for this procedure.

    CPT code 28090 describes surgical excision of a lesion involving a tendon, tendon sheath, or capsule of the foot with possible synovectomy to remove inflamed or diseased synovium from the extensor tendon sheath; service type: surgical excision with synovectomy; typical site of service: outpatient surgical suite or hospital operating room for foot/ankle surgery.

    For related coverage guidance, see recent payer policy updates: Shoulder Arthroplasty (Total, Partial, Reverse, Revision and Resurfacing), Hip Arthroplasty (partial and total hip replacement), Artificial Lumbar Intervertebral Disc (Lumbar Total Disc Arthroplasty).

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 54-year-old patient presents to an outpatient orthopedic clinic with progressive dorsal foot pain and swelling localized over the extensor tendons of the forefoot. Conservative management including anti-inflammatory medications, activity modification, orthotics, and a corticosteroid injection provided limited and temporary relief. Physical exam demonstrates focal tenderness and crepitus over the extensor tendon sheath and reduced toe extension strength. Imaging (ultrasound or MRI) shows tenosynovitis with thickened synovium and a discrete inflamed lesion adherent to the extensor tendon sheath. The patient is scheduled for an operative procedure under regional or general anesthesia in an ambulatory surgery center or hospital outpatient department where the surgeon performs excision of the lesion affecting the tendon, tendon sheath, or capsule and a synovectomy of the extensor tendon sheath to remove diseased synovium and relieve pain. Typical workflow includes preoperative evaluation, informed consent documenting the indication and targeted tendon sheath, intraoperative documentation of lesion size and tissues removed, and postoperative instructions for wound care and progressive range-of-motion and strengthening. Billing uses 28090 for the excision with possible modifier additions to indicate laterality, anesthesia or unusual circumstances.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    11042Debridement, subcutaneous tissue (eg, open wound), first 20 sq cm or lessMay be used when significant debridement of inflamed soft tissue is required in addition to synovectomy
    25075Tenolysis; flexor tendons, forearm and/or wrist, single tendonAnalogous tendon-release procedure code for reference; not specific to foot but conceptually related
    20610Arthrocentesis, aspiration and/or injection; major joint or bursa (eg, shoulder, hip, knee joint)Used preoperatively if diagnostic or therapeutic injection into adjacent joint or tendon sheath is performed
    99213Office or other outpatient visit for established patient, typically 15 minutesTypical preoperative or postoperative clinic visit associated with the procedure
    20526Injection, therapeutic, of tendon sheath (eg, tenosynovitis)Diagnostic or therapeutic injection into the tendon sheath that may be performed before deciding on 28090

    Related Modifiers

    10 rows

    ModifierDescriptionWhen to Use
    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…
    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…
    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…
    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…
    24Modifier 24 denotes an unrelated evaluation and management (E/M) service performed by the same physician or qualified healthcare professional during a postoperative global period. Per CPT guidance,…- Use modifier 24 when you report an evaluation and management (E/M) service performed by the same physician or same-specialty group during a procedure’s postoperative global period that is unrelated…
    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…
    79Modifier 79 indicates a surgical procedure performed during the postoperative global period of a prior surgery that is unrelated to the original procedure. Per AMA/CPT and CMS guidance, it is…- Use modifier 79 when the same physician (or same‑specialty physician in the same group) performs a surgical procedure during the postoperative global period of a prior surgery and the new procedure…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207P00000XEmergency Medicine PhysicianAn emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospit…
    207L00000XAnesthesiology PhysicianAn anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
    207K00000XAllergy & Immunology PhysicianAn allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Select…
    208000000XPediatrics PhysicianA pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectru…
    2086S0102XSurgical Critical Care PhysicianA surgeon with expertise in the management of the critically ill and postoperative patient, particularly the trauma victim, who specializes in critica…
    333300000XEmergency Response System CompaniesA supplier of a personal emergency response system (PERS), which is an electronic device that enables a patient to receive emergency assistance when n…
    2083P0500XPreventive Medicine/Occupational Environmental Medicine PhysicianA preventive medicine physician who specializes in preventive medicine/occupational-environmental medicine, which is focused on protecting the populat…
    102X00000XPoetry TherapistA medical or mental health professional who has attained credentials after satisfactorily completing a poetry therapy training program approved by the…

    Related ICD-10-CM Codes

    22 rows

    ICD-10-CM CodeDescription
    M05.871Other rheumatoid arthritis with rheumatoid factor of right ankle and foot
    M06.4Inflammatory polyarthropathy
    M08.871Other juvenile arthritis, right ankle and foot
    M12.571Traumatic arthropathy, right ankle and foot
    M12.572Traumatic arthropathy, left ankle and foot
    M24.571Contracture, right ankle
    M24.572Contracture, left ankle
    M25.571Pain in right ankle and joints of right foot
    M25.572Pain in left ankle and joints of left foot
    M65.4Radial styloid tenosynovitis [de Quervain]

    Showing 1–10 of 22

    Related Payer Policy Updates

    Specialty: Orthopedics/Musculoskeletal1 / 3

    10 rows

    PolicyPayerEffective Date
    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
    Metal-on-Metal Total Hip Resurfacinguniverahealthcare2026-10-15
    Lumbar Fusion (arthrodesis) with decompressionuniverahealthcare2026-10-15
    Sacroiliac Joint Fusion or Stabilizationuniverahealthcare2026-10-15
    Percutaneous Vertebroplasty/Mechanical Vertebral Augmentation and Percutaneous Sacroplastyuniverahealthcare2026-10-15
    Autologous Chondrocyte Implantation (ACI)univerahealthcare2026-10-15
    Shoulder Open ProceduresPremera Bluecross2026-09-04

    Related Codes

    CPT-28039-FOOT-TOE-SOFT-TISSUE-MASS-EXCISION-1-5CM-OR-GREATER

    CPT 28039: Excision of Soft Tissue Mass, Foot or Toe (≥1.5 cm)

    CPT-28041-FOOT-TOE-INTRINSIC-MUSCLE-MASS-EXCISION-15CM-OR-GREATER

    CPT 28041: Excision of Intrinsic Foot/Toe Muscle Mass, ≥1.5 cm

    CPT-28043-FOOT-TOE-SUBCUTANEOUS-MASS-EXCISION

    CPT 28043: Excision of Subcutaneous Foot/Toe Mass (<1.5 cm)

    CPT-28045-FOOT-TOE-SOFT-TISSUE-MASS-EXCISION

    CPT 28045: Excision of Intrinsic Foot/Toe Muscle Mass, <1.5 cm

    CPT-28046-EXTENSIVE-EXCISION-FOOT-TOE-SOFT-TISSUE-TUMOR

    CPT 28046: Extensive Excision of Soft-Tissue Tumor of Foot or Toe, <3 cm

    CPT-28047-EXTENSIVE-SOFT-TISSUE-TUMOR-EXCISION-FOOT-TOE-3CM-OR-MORE

    CPT 28047: Extensive Excision of Foot/Toe Soft Tissue Tumor ≥3 cm

    CPT-28050-FOOT-JOINT-EXPLORATION-SOFT-TISSUE-BIOPSY

    CPT 28050: Open Foot Joint Biopsy of Soft Tissue

    CPT-28052-METATARSOPHALANGEAL-JOINT-SOFT-TISSUE-BIOPSY

    CPT 28052: Open Biopsy of Metatarsophalangeal Joint Soft Tissue

    CPT-28054-DIGITAL-JOINT-BIOPSY-TOE-FINGER

    CPT 28054: Incision for Toe or Finger Joint Biopsy

    CPT-28055-BURSAL-EXCISION-WITH-NERVE-DISSECTION-NEURECTOMY

    CPT 28055: Bursal Debridement with Neurectomy, Upper Ankle/Foot

    Showing 1–10 of 45

    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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