M61.129: Myositis ossificans progressiva, unspecified upper arm

Description revised · FY2026

Billable: use this code on claims.

• Description changed effective October 1, 2025. Before that it read: Myositis ossificans progressiva, unspecified arm.

Code breakdown

Coding notes

Inclusion terms (from M61.1)

• Fibrodysplasia ossificans progressiva

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All FY2026 ICD-10-CM changes

ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.