M60.18 – Interstitial myositis, other site

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

Billable code

ICD-10-CM code M60.18
Code
M60.18 (claims format: M6018)
Description
Interstitial myositis, other site
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
M60 › M60.1

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)

Index terms for M60.18

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

Related codes in M60.1

Frequently asked questions

What is ICD-10 code M60.18?

M60.18 is the ICD-10-CM code for interstitial myositis, other site, in the block M60-M63 (Disorders of muscles).

Is M60.18 a billable code?

Yes. M60.18 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M60.18 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.