All ICD10 Codes
M60Not billable, use a more specific code below

Myositis

In Disorders of muscles (M60-M63), chapter 13: Diseases of the Musculoskeletal System and Connective Tissue

111 billable codes under M60: 39 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

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Instructional notes

Excludes2: not included here, code separately if applicable

  • inclusion body myositis [IBM] (G72.41)

Also applies, from Disorders of muscles (M60-M63)

These notes sit on M60-M63 and apply to every code under it, including M60.

Excludes1: not coded here, use a different code

  • 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, code separately if applicable

  • muscular dystrophies and myopathies (G71-G72)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers site and laterality, acute injury versus chronic musculoskeletal conditions, 7th characters for pathologic fractures, osteoporosis with or without current fracture, and multisystem inflammatory syndrome.

Read Section I.C.13 (page 60)

All codes under M60

M60 can't be used on a claim. Pick a billable code below; grey headings group them.

M60 MS-DRGs

As the principal diagnosis, the billable codes under M60 group to MS-DRG 557, 558, 555, or 556 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to M60

Notes on these codes point to M60.

  • G71 Excludes2: myositis (M60.-)
  • G72 Excludes1: myositis (M60.-)
  • M79.1 Excludes1: myositis (M60.-)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Myositis

Myositis means inflammation of the muscles that you use to move your body. An injury, infection, or autoimmune disease can cause it. Two specific kinds are polymyositis and dermatomyositis. Polymyositis causes muscle weakness, usually in the muscles closest to the trunk of your body. Dermatomyositis causes muscle weakness, plus a skin rash.

Read more about myositis on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.