M60.8 – Other myositis

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

Non-billable header

ICD-10-CM code M60.8

Code: M60.8 (claims format: M608)
Description: Other myositis
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
Parent codes: M60

Billable codes under M60.8

M60.8 is a header code and cannot be used on claims. Choose the most specific code:

M60.80 – Other myositis, unspecified siteBillable
M60.81 – Other myositis shoulderHeader (more codes below)
M60.82 – Other myositis, upper armHeader (more codes below)
M60.83 – Other myositis, forearmHeader (more codes below)
M60.84 – Other myositis, handHeader (more codes below)
M60.85 – Other myositis, thighHeader (more codes below)
M60.86 – Other myositis, lower legHeader (more codes below)
M60.87 – Other myositis, ankle and footHeader (more codes below)
M60.88 – Other myositis, other siteBillable
M60.89 – Other myositis, multiple sitesBillable

Notes inherited from parent codes

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

M60 – Myositis

Excludes2 (not included here):

inclusion body myositis [IBM] (G72.41)

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)

Related codes in M60

M60.0 – Infective myositisHeader
M60.1 – Interstitial myositisHeader
M60.2 – Foreign body granuloma of soft tissue, not elsewhere classifiedHeader
M60.9 – Myositis, unspecifiedBillable

Frequently asked questions

What is ICD-10 code M60.8?

M60.8 is the ICD-10-CM code for other myositis, in the block M60-M63 (Disorders of muscles).

Is M60.8 a billable code?

No. M60.8 is a header code with more specific child codes; report one of the billable codes listed above.

What category does M60.8 belong to?

It belongs to category M60 – Myositis.

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.