M61.21Header code — not billable
Paralytic calcification and ossification of muscle, shoulder
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue
- Category
- M61
- Effective date
- October 1, 2026
Related codes in category M61
M61Calcification and ossification of muscleM61.0Myositis ossificans traumaticaM61.00Myositis ossificans traumatica, unspecified siteYesM61.01Myositis ossificans traumatica, shoulderM61.011Myositis ossificans traumatica, right shoulderYesM61.012Myositis ossificans traumatica, left shoulderYesM61.019Myositis ossificans traumatica, unspecified shoulderYesM61.02Myositis ossificans traumatica, upper armM61.021Myositis ossificans traumatica, right upper armYesM61.022Myositis ossificans traumatica, left upper armYesM61.029Myositis ossificans traumatica, unspecified upper armYesM61.03Myositis ossificans traumatica, forearm
Frequently asked questions
What is ICD-10 code M61.21?
M61.21 is an ICD-10-CM diagnosis code for Paralytic calcification and ossification of muscle, shoulder.
Is M61.21 a billable code?
No. M61.21 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is M61.21 in?
M61.21 falls under Chapter 13: Diseases of the musculoskeletal system and connective tissue.
When did M61.21 become effective?
M61.21 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to M61.21?
M61.21 belongs to category M61, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.