M61.9 – Calcification and ossification of muscle, unspecified

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

Billable code

ICD-10-CM code M61.9

Code: M61.9 (claims format: M619)
Description: Calcification and ossification of muscle, unspecified
Billable: Yes – valid for HIPAA-covered transactions
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
Parent codes: M61

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)

Index terms for M61.9

Entries in the ICD-10-CM alphabetic index that lead to this code:

Calcification, muscle

Related codes in M61

Frequently asked questions

What is ICD-10 code M61.9?

M61.9 is the ICD-10-CM code for calcification and ossification of muscle, unspecified, in the block M60-M63 (Disorders of muscles).

Is M61.9 a billable code?

Yes. M61.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M61.9 belong to?

It belongs to category M61 – Calcification and ossification of muscle.

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.