ICD-10-CM diagnosis code
M62.539 Muscle wasting and atrophy, not elsewhere classified, unspecified forearm
- Billable
- Yes, a complete code (FY2026)
- Category
- M62 Other disorders of muscle
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Other codes in M62
131 complete codes in this category.
- M62.519Muscle wasting and atrophy, not elsewhere classified, unspecified shoulder
- M62.521Muscle wasting and atrophy, not elsewhere classified, right upper arm
- M62.522Muscle wasting and atrophy, not elsewhere classified, left upper arm
- M62.529Muscle wasting and atrophy, not elsewhere classified, unspecified upper arm
- M62.531Muscle wasting and atrophy, not elsewhere classified, right forearm
- M62.532Muscle wasting and atrophy, not elsewhere classified, left forearm
- M62.539Muscle wasting and atrophy, not elsewhere classified, unspecified forearm
- M62.541Muscle wasting and atrophy, not elsewhere classified, right hand
- M62.542Muscle wasting and atrophy, not elsewhere classified, left hand
- M62.549Muscle wasting and atrophy, not elsewhere classified, unspecified hand
- M62.551Muscle wasting and atrophy, not elsewhere classified, right thigh
- M62.552Muscle wasting and atrophy, not elsewhere classified, left thigh
Documentation tips
- Make sure the note supports every element of the title, “Muscle wasting and atrophy, not elsewhere classified, unspecified forearm”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to M62.
The international WHO ICD-10 also has M62, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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