ICD-10-CM > M00-M99 > M60-M63 > M61 > M61.1 > M61.15 M61.15 Myositis ossificans progressiva, thigh Non-Billable/Non-Specific Codes M61.151Myositis ossificans progressiva, right thighM61.152Myositis ossificans progressiva, left thighM61.159Myositis ossificans progressiva, unspecified thigh