Other and unspecified myopathies (G72) ICD-10-CM
The G72 code range covers other and unspecified myopathies with 12 ICD-10-CM diagnosis codes. 9 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the G72 Range 12 codes · 9 billable
- G72 Other and unspecified myopathiesNon-billable
- G72.0 Drug-induced myopathy
- G72.1 Alcoholic myopathy
- G72.2 Myopathy due to other toxic agents
- G72.3 Periodic paralysis
- G72.4 Inflammatory and immune myopathies, not elsewhere classifiedNon-billable
- G72.41 Inclusion body myositis [IBM]
- G72.49 Other inflammatory and immune myopathies, not elsewhere classified
- G72.8 Other specified myopathiesNon-billable
- G72.81 Critical illness myopathy
- G72.89 Other specified myopathies
- G72.9 Myopathy, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the G72 range.
Dermatomyositis
A subacute or chronic inflammatory disease of muscle and skin, marked by proximal muscle weakness and a characteristic skin rash. The illness occurs with approximately equal frequency in children and adults. The skin lesions usually take the form of a purplish rash (or less often an exfoliative dermatitis) involving the nose, cheeks, forehead, upper trunk, and arms. The disease is associated with a complement mediated intramuscular microangiopathy, leading to loss of capillaries, muscle ischemia, muscle-fiber necrosis, and perifascicular atrophy. The childhood form of this disease tends to evolve into a systemic vasculitis. Dermatomyositis may occur in association with malignant neoplasms. (From Adams et al., Principles of Neurology, 6th ed, pp1405-6)
Polymyositis
Diseases characterized by inflammation involving multiple muscles. This may occur as an acute or chronic condition associated with medication toxicity (DRUG TOXICITY); CONNECTIVE TISSUE DISEASES; infections; malignant NEOPLASMS; and other disorders. The term polymyositis is frequently used to refer to a specific clinical entity characterized by subacute or slowly progressing symmetrical weakness primarily affecting the proximal limb and trunk muscles. The illness may occur at any age, but is most frequent in the fourth to sixth decade of life. Weakness of pharyngeal and laryngeal muscles, interstitial lung disease, and inflammation of the myocardium may also occur. Muscle biopsy reveals widespread destruction of segments of muscle fibers and an inflammatory cellular response. (Adams et al., Principles of Neurology, 6th ed, pp1404-9)
About the G72 Code Range
The ICD-10 code section G72 covers a diverse group of muscle disorders known as other and unspecified myopathies, which affect the skeletal muscles in various ways. These codes are used to document specific types of muscle diseases that cannot be classified under more common categories.
This section includes conditions like drug-induced myopathy (G72.0), which can arise from medications such as steroids or antibiotics; alcoholic myopathy (G72.1), related to chronic alcohol use; and myopathy due to other toxic agents (G72.2), including rare causes like snake bites. It also addresses periodic paralysis (G72.3), a group of disorders causing sudden muscle weakness, and inflammatory and immune myopathies (G72.4) such as inclusion body myositis (G72.41), a chronic muscle inflammation disorder. Other specified variants like critical illness myopathy (G72.81) appear in very ill patients, while unspecified myopathy (G72.9) is reserved for cases where the exact cause remains unclear. Using these codes helps healthcare providers accurately capture complex muscle disease presentations for diagnosis and treatment planning.
Questions About This Page
How many billable codes are in the G72 range?
Of the 12 codes in this range, 9 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the G72 range classify?
The range classifies other and unspecified myopathies. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
