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    v1.0.28
    OpenPayerBilling CodesDisorders of synovium and tendonICD-10-CM m67-other-disorders-of-synovium-and-tendon
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    ICD-10-CM Code For Other Disorders Of Synovium And Tendon: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group M67 includes inflammatory, degenerative, and proliferative disorders of the synovium and tendon such as synovitis, tenosynovitis, and localized proliferative synovial conditions. These ICD-10-CM diagnosis codes are used to document presentations of tendon and synovial pathology, capturing anatomic site, laterality when applicable, and clinical complexity relevant to this group. Accurate coding within the ICD-10-CM M67 group supports proper claim adjudication.

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    ICD-10-CM M67: Other Disorders Of Synovium And Tendon Overview

    The ICD-10-CM M67 group includes less common inflammatory, degenerative, and proliferative conditions affecting the synovium and tendons. These diagnoses target musculoskeletal structures such as tendon sheaths and joint synovium throughout the body. Accurate coding matters for correct classification of clinical complexity and supports appropriate reimbursement.

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    When to Use

    Use a code from this group when a clinician documents an inflammatory, degenerative, or proliferative condition primarily involving tendon sheaths or joint synovium. Select the code that reflects the precise diagnosis, anatomic location, and laterality as documented in the medical record.

    ICD-10-CM Codes

    140 rows

    ICD-10-CM CodeDescription
    M67.00Short Achilles tendon (acquired), unspecified ankle
    M67.01Short Achilles tendon (acquired), right ankle
    M67.02Short Achilles tendon (acquired), left ankle
    M67.20Synovial hypertrophy, not elsewhere classified, unspecified site
    M67.211Synovial hypertrophy, not elsewhere classified, right shoulder
    M67.212Synovial hypertrophy, not elsewhere classified, left shoulder
    M67.219Synovial hypertrophy, not elsewhere classified, unspecified shoulder
    M67.221Synovial hypertrophy, not elsewhere classified, right upper arm
    M67.222Synovial hypertrophy, not elsewhere classified, left upper arm
    M67.229Synovial hypertrophy, not elsewhere classified, unspecified upper arm
    M67.231Synovial hypertrophy, not elsewhere classified, right forearm
    M67.232Synovial hypertrophy, not elsewhere classified, left forearm
    M67.239Synovial hypertrophy, not elsewhere classified, unspecified forearm
    M67.241Synovial hypertrophy, not elsewhere classified, right hand
    M67.242Synovial hypertrophy, not elsewhere classified, left hand
    M67.249Synovial hypertrophy, not elsewhere classified, unspecified hand
    M67.251Synovial hypertrophy, not elsewhere classified, right thigh
    M67.252Synovial hypertrophy, not elsewhere classified, left thigh
    M67.259Synovial hypertrophy, not elsewhere classified, unspecified thigh
    M67.261Synovial hypertrophy, not elsewhere classified, right lower leg

    Showing 1–20 of 140

    DRG Codes

    2 rows

    DRG CodeDescription
    557Tendonitis, Myositis and Bursitis with MCC
    558Tendonitis, Myositis and Bursitis without MCC

    Typical Clinical Scenarios

    • A middle-aged office worker presents to urgent care with sudden onset wrist pain, swelling at the radial side, and painful clicking after repetitive typing and a recent episode of forceful gripping. Examination shows localized tenderness over the first dorsal compartment and positive Finkelstein’s test; ultrasound confirms tenosynovitis without rupture. A code from this group is assigned to capture the acute inflammation of the tendon sheath causing the acute symptomatic presentation. Typical codes: M67.341, M67.349
    • An elderly patient with progressive pain, stiffness, and palpable nodules along the flexor tendons of the fingers over several months seeks evaluation in primary care due to worsening hand function. Clinical assessment documents chronic thickening of the tendon sheaths and intermittent triggering; conservative therapy has been ongoing. A chronic disorder of the synovium/tendon is coded to reflect the long-standing degenerative/inflammatory tendon sheath disease. Typical codes: M67.311, M67.319
    • A young athlete is seen in the orthopedic clinic after surgical repair of a ruptured Achilles tendon sustained during competition; at follow-up the patient has persistent swelling and restricted ankle motion due to postoperative tenosynovitis. The encounter documents postoperative complication involving the tendon sheath, necessitating continued monitoring and rehabilitation. Typical codes: M67.221, M67.229

    Related Codes

    M65-SYNOVITIS-AND-TENOSYNOVITIS

    ICD-10-CM Code For Synovitis And Tenosynovitis: Group Overview

    M66-SPONTANEOUS-RUPTURE-OF-SYNOVIUM-AND-TENDON

    ICD-10-CM Code For Spontaneous Rupture Of Synovium And Tendon: Group Overview

    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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