ICD-10-CM › M00-M99 › M60-M63 › M63 Disorders of muscle in diseases... › M63.8

M63.8

Disorders of muscle in diseases classified elsewhere

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 10 more specific codes instead:

  • M63.80 Disorders of muscle in diseases classified elsewhere, unspecified site
  • M63.81 Disorders of muscle in diseases classified elsewhere, shoulder (also a header)
  • M63.82 Disorders of muscle in diseases classified elsewhere, upper arm (also a header)
  • M63.83 Disorders of muscle in diseases classified elsewhere, forearm (also a header)
  • M63.84 Disorders of muscle in diseases classified elsewhere, hand (also a header)
  • M63.85 Disorders of muscle in diseases classified elsewhere, thigh (also a header)
  • M63.86 Disorders of muscle in diseases classified elsewhere, lower leg (also a header)
  • M63.87 Disorders of muscle in diseases classified elsewhere, ankle and foot (also a header)
  • M63.88 Disorders of muscle in diseases classified elsewhere, other site
  • M63.89 Disorders of muscle in diseases classified elsewhere, multiple sites

What has happened to this code

Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2012 Added to the draft code set draft Disorders of muscle in diseases classified elsewhere

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from M63 Disorders of muscle in diseases classified elsewhere

Excludes1 - never coded here

  • myopathy in cysticercosis (B69.81)
  • myopathy in endocrine diseases (G73.7)
  • myopathy in metabolic diseases (G73.7)
  • myopathy in sarcoidosis (D86.87)
  • myopathy in secondary syphilis (A51.49)
  • myopathy in syphilis (late) (A52.78)
  • myopathy in toxoplasmosis (B58.82)
  • myopathy in tuberculosis (A18.09)

Code first

  • underlying disease, such as:
  • leprosy (A30.-)
  • neoplasm (C49.-, C79.89, D21.-, D48.1-)
  • schistosomiasis (B65.-)
  • trichinellosis (B75)

Inherited from the M60-M63 section Disorders of muscles (M60-M63)

Excludes1 - never 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)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.