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    OpenPayerBilling CodesOther soft tissue disordersICD-10-CM m79-other-soft-tissue-disorders
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    ICD-10-CM Code For Other And Unspecified Soft Tissue Disorders Not Elsewhere Classified: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group M79 includes miscellaneous and unspecified soft tissue disorders such as localized soft tissue pain, myalgias, and other nonclassified connective tissue conditions affecting muscles, fascia, and subcutaneous tissues. These ICD-10-CM diagnosis codes are used to document clinical encounters for nonspecific or uncategorized soft tissue complaints, capturing aspects like pain location, laterality, and associated functional impact when detailed specific codes are not available. Accurate coding within the ICD-10-CM M79 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM M79: Other And Unspecified Soft Tissue Disorders, Not Elsewhere Classified Overview

    The ICD-10-CM M79 group encompasses a range of soft tissue disorders that do not fit into other specific musculoskeletal categories, including unspecified pain and localized soft tissue conditions. These diagnoses target the connective tissues, fascia, muscles, and subcutaneous structures throughout the body. Accurate coding is important to reflect clinical complexity and to support appropriate reimbursement.

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    When to Use

    Use a code from this group when a clinician documents soft tissue pain or dysfunction that cannot be assigned to a more specific ICD-10-CM code or when the presentation is explicitly described as unspecified. These codes apply to encounters focused on evaluation and management of nonspecific soft tissue complaints, including documentation of location and severity when available.

    ICD-10-CM Codes

    52 rows

    ICD-10-CM CodeDescription
    M79.0Rheumatism, unspecified
    M79.10Myalgia, unspecified site
    M79.11Myalgia of mastication muscle
    M79.12Myalgia of auxiliary muscles, head and neck
    M79.18Myalgia, other site
    M79.2Neuralgia and neuritis, unspecified
    M79.3Panniculitis, unspecified
    M79.4Hypertrophy of (infrapatellar) fat pad
    M79.5Residual foreign body in soft tissue
    M79.601Pain in right arm
    M79.602Pain in left arm
    M79.603Pain in arm, unspecified
    M79.604Pain in right leg
    M79.605Pain in left leg
    M79.606Pain in leg, unspecified
    M79.609Pain in unspecified limb
    M79.621Pain in right upper arm
    M79.622Pain in left upper arm
    M79.629Pain in unspecified upper arm
    M79.631Pain in right forearm

    Showing 1–20 of 52

    DRG Codes

    11 rows

    DRG CodeDescription
    073Cranial and Peripheral Nerve Disorders with MCC
    074Cranial and Peripheral Nerve Disorders without MCC
    555Signs and Symptoms of Musculoskeletal System and Connective Tissue with MCC
    556Signs and Symptoms of Musculoskeletal System and Connective Tissue without MCC
    557Tendonitis, Myositis and Bursitis with MCC
    558Tendonitis, Myositis and Bursitis without MCC
    564Other Musculoskeletal System and Connective Tissue Diagnoses with MCC
    565Other Musculoskeletal System and Connective Tissue Diagnoses with CC
    566Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC
    606Minor Skin Disorders with MCC
    607Minor Skin Disorders without MCC

    Typical Clinical Scenarios

    • A middle-aged patient presents to urgent care after twisting their ankle while running, reporting localized soft-tissue pain, swelling, and bruising without fracture on x-ray. Examination shows diffuse tenderness of the periarticular soft tissues and the clinician documents an acute soft tissue sprain/contusion around the joint; a code from this group is assigned for the soft-tissue injury rather than a fracture. Typical codes: M79.6, M79.1.
    • An older adult with longstanding rheumatoid arthritis complains of chronic, intermittent generalized muscle and soft-tissue pain and stiffness that is not attributable to a specific muscle disease; they seek primary care for ongoing pain management and functional limitations. The clinician documents an unspecified or generalized soft tissue disorder as a chronic comorbidity contributing to pain and functional decline, so a non-specific soft-tissue pain code is used. Typical codes: M79.1, M79.7.
    • A patient with poorly controlled diabetes is seen for a non-healing foot ulcer complicated by deep soft-tissue inflammation and diffuse limb pain without evidence of osteomyelitis; the wound service documents soft-tissue infection and extensive peri-wound tenderness. A code from this group is assigned to capture the localized soft-tissue disorder/inflammation as a comorbid condition affecting wound healing and management. Typical codes: M79.2, M79.89.

    Related Codes

    M70-SOFT-TISSUE-DISORDERS-RELATED-TO-USE

    ICD-10-CM Code For Soft Tissue Disorders Related To Use Overuse And Pressure: Group Overview

    M71-OTHER-BURSOPATHIES

    ICD-10-CM Code For Other Bursopathies: Group Overview

    M72-FIBROBLASTIC-DISORDERS

    ICD-10-CM Code For Fibroblastic Disorders: Group Overview

    M75-SHOULDER-LESIONS

    ICD-10-CM Code For Shoulder Lesions: Group Overview

    M76-ENTHESOPATHIES-LOWER-LIMB

    ICD-10-CM Code For Enthesopathies Lower Limb Excluding Foot: Group Overview

    M77-OTHER-ENTHESOPATHIES

    ICD-10-CM Code For Other Enthesopathies: 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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