M61 – Calcification and ossification of muscle

ICD-10-CM 2027 diagnosis code · Disorders of muscles

Non-billable header

ICD-10-CM code M61

Code: M61 (claims format: M61)
Description: Calcification and ossification of muscle
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M60-M63 Disorders of muscles

Billable codes under M61

M61 is a header code and cannot be used on claims. Choose the most specific code:

M61.0 – Myositis ossificans traumaticaHeader (more codes below)
M61.1 – Myositis ossificans progressivaHeader (more codes below)
M61.2 – Paralytic calcification and ossification of muscleHeader (more codes below)
M61.3 – Calcification and ossification of muscles associated with burnsHeader (more codes below)
M61.4 – Other calcification of muscleHeader (more codes below)
M61.5 – Other ossification of muscleHeader (more codes below)
M61.9 – Calcification and ossification of muscle, unspecifiedBillable

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block M60-M63

Excludes1 (not coded here):

dermatopolymyositis (M33.-)
myopathy in amyloidosis (E85.-)
myopathy in polyarteritis nodosa (M30.0)
myopathy in rheumatoid arthritis (M05.32)
myopathy in scleroderma (M34.-)
myopathy in Sjögren's syndrome (M35.03)
myopathy in systemic lupus erythematosus (M32.-)

Excludes2 (not included here):

muscular dystrophies and myopathies (G71-G72)

Frequently asked questions

What is ICD-10 code M61?

M61 is the ICD-10-CM code for calcification and ossification of muscle, in the block M60-M63 (Disorders of muscles).

Is M61 a billable code?

No. M61 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.