ICD-10 Code G72.89 – Other specified myopathies (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G72.89 – Other specified myopathies
What it is
This code identifies a myopathy, or muscle disease, that does not fit a more specific ICD-10 category. Use it when documentation names a particular muscle disorder but provides no better code.
Clinical signs
Common findings include muscle weakness, fatigue, pain, or reduced muscle function. Clinical features vary; refer to documentation, especially when the record describes a specified but uncommon myopathy.
When to use this code
Use G72.89 when the provider documents an “other specified” myopathy or names a muscle disorder that is not indexed elsewhere. It is appropriate when the diagnosis is clear enough to code, but no more specific ICD-10 option applies. Check documentation if the note is vague or incomplete.
Do not use for
Do not use this code for unspecified myopathy when the record lacks detail. Also avoid it when documentation supports a more specific myopathy code or a non-muscle cause of weakness.
Coding tip
Query for the exact myopathy type if the record says only “muscle disease” or “weakness.”