DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

M63 Disorders of muscle in diseases classified elsewhere

  • Header · not billable

M63 is not billable. The category heads 24 billable codes in FY2027, grouped under 1 subdivision.

Where it sits

  1. Chapter 13 Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. M60-M63 Disorders of muscles (M60-M63)
  3. M63 Disorders of muscle in diseases classified elsewhere
Billable codes
24
Subdivisions
1
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
42

Codes in M63

  1. M63.8
    Disorders of muscle in diseases classified elsewhere
    Header
  2. M63.80
    Disorders of muscle in diseases classified elsewhere, unspecified site
    Billable
  3. M63.81
    Disorders of muscle in diseases classified elsewhere, shoulder
    Header
  4. M63.811
    Disorders of muscle in diseases classified elsewhere, right shoulder
    Billable
  5. M63.812
    Disorders of muscle in diseases classified elsewhere, left shoulder
    Billable
  6. M63.819
    Disorders of muscle in diseases classified elsewhere, unspecified shoulder
    Billable
  7. M63.82
    Disorders of muscle in diseases classified elsewhere, upper arm
    Header
  8. M63.821
    Disorders of muscle in diseases classified elsewhere, right upper arm
    Billable
  9. M63.822
    Disorders of muscle in diseases classified elsewhere, left upper arm
    Billable
  10. M63.829
    Disorders of muscle in diseases classified elsewhere, unspecified upper arm
    Billable
  11. M63.83
    Disorders of muscle in diseases classified elsewhere, forearm
    Header
  12. M63.831
    Disorders of muscle in diseases classified elsewhere, right forearm
    Billable
  13. M63.832
    Disorders of muscle in diseases classified elsewhere, left forearm
    Billable
  14. M63.839
    Disorders of muscle in diseases classified elsewhere, unspecified forearm
    Billable
  15. M63.84
    Disorders of muscle in diseases classified elsewhere, hand
    Header
  16. M63.841
    Disorders of muscle in diseases classified elsewhere, right hand
    Billable
  17. M63.842
    Disorders of muscle in diseases classified elsewhere, left hand
    Billable
  18. M63.849
    Disorders of muscle in diseases classified elsewhere, unspecified hand
    Billable
  19. M63.85
    Disorders of muscle in diseases classified elsewhere, thigh
    Header
  20. M63.851
    Disorders of muscle in diseases classified elsewhere, right thigh
    Billable
  21. M63.852
    Disorders of muscle in diseases classified elsewhere, left thigh
    Billable
  22. M63.859
    Disorders of muscle in diseases classified elsewhere, unspecified thigh
    Billable
  23. M63.86
    Disorders of muscle in diseases classified elsewhere, lower leg
    Header
  24. M63.861
    Disorders of muscle in diseases classified elsewhere, right lower leg
    Billable
  25. M63.862
    Disorders of muscle in diseases classified elsewhere, left lower leg
    Billable
  26. M63.869
    Disorders of muscle in diseases classified elsewhere, unspecified lower leg
    Billable
  27. M63.87
    Disorders of muscle in diseases classified elsewhere, ankle and foot
    Header
  28. M63.871
    Disorders of muscle in diseases classified elsewhere, right ankle and foot
    Billable
  29. M63.872
    Disorders of muscle in diseases classified elsewhere, left ankle and foot
    Billable
  30. M63.879
    Disorders of muscle in diseases classified elsewhere, unspecified ankle and foot
    Billable
  31. M63.88
    Disorders of muscle in diseases classified elsewhere, other site
    Billable
  32. M63.89
    Disorders of muscle in diseases classified elsewhere, multiple sites
    Billable

Sources of each column.

Instructions

At M63

Excludes1

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

Code first

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

Notes that also apply

Block M60-M63 instructions (Excludes1 7, Excludes2 1): printed on the block page.

Chapter 13 instructions (Notes 1, Excludes2 10): printed on the chapter 13 page.

Index entries

  • Leprosywith muscle disorder → A30.9 [M63.80]
  • Myositismycotic → B49 [M63.8-]
  • Schistosomiasiswith muscle disorder → B65.9 [M63.80]
  • Trichinellosis, trichiniasis, trichinelliasis, trichinosiswith muscle disorder → B75 [M63.80]
  • Leprosywith muscle disorderankle → A30.9 [M63.87-]
  • Leprosywith muscle disorderfoot → A30.9 [M63.87-]
  • Leprosywith muscle disorderforearm → A30.9 [M63.83-]
  • Leprosywith muscle disorderhand → A30.9 [M63.84-]
  • Leprosywith muscle disorderlower leg → A30.9 [M63.86-]
  • Leprosywith muscle disordermultiple sites → A30.9 [M63.89]
  • Leprosywith muscle disorderpelvic region → A30.9 [M63.85-]
  • Leprosywith muscle disordershoulder region → A30.9 [M63.81-]
  • Leprosywith muscle disorderspecified site NEC → A30.9 [M63.88]
  • Leprosywith muscle disorderthigh → A30.9 [M63.85-]
  • Leprosywith muscle disorderupper arm → A30.9 [M63.82-]
  • Myositisin (due to)leprosy → A30.9 [M63.8-]
  • Myositisin (due to)mycosis → B49 [M63.8-]
  • Myositisin (due to)bilharziasis → B65.9 [M63.8-]
  • Myositisin (due to)schistosomiasis → B65.9 [M63.8-]
  • Schistosomiasiswith muscle disorderankle → B65.9 [M63.87-]
  • Schistosomiasiswith muscle disorderfoot → B65.9 [M63.87-]
  • Schistosomiasiswith muscle disorderforearm → B65.9 [M63.83-]
  • Schistosomiasiswith muscle disorderhand → B65.9 [M63.84-]
  • Schistosomiasiswith muscle disorderlower leg → B65.9 [M63.86-]
  • Schistosomiasiswith muscle disordermultiple sites → B65.9 [M63.89]
  • Schistosomiasiswith muscle disorderpelvic region → B65.9 [M63.85-]
  • Schistosomiasiswith muscle disordershoulder region → B65.9 [M63.81-]
  • Schistosomiasiswith muscle disorderspecified site NEC → B65.9 [M63.88]
  • Schistosomiasiswith muscle disorderthigh → B65.9 [M63.85-]
  • Schistosomiasiswith muscle disorderupper arm → B65.9 [M63.82-]
  • Myositisin (due to)trichinellosis → B75 [M63.8-]
  • Trichinellosis, trichiniasis, trichinelliasis, trichinosiswith muscle disorderankle → B75 [M63.87-]
  • Trichinellosis, trichiniasis, trichinelliasis, trichinosiswith muscle disorderfoot → B75 [M63.87-]
  • Trichinellosis, trichiniasis, trichinelliasis, trichinosiswith muscle disorderforearm → B75 [M63.83-]
  • Trichinellosis, trichiniasis, trichinelliasis, trichinosiswith muscle disorderhand → B75 [M63.84-]
  • Trichinellosis, trichiniasis, trichinelliasis, trichinosiswith muscle disorderlower leg → B75 [M63.86-]
  • Trichinellosis, trichiniasis, trichinelliasis, trichinosiswith muscle disordermultiple sites → B75 [M63.89]
  • Trichinellosis, trichiniasis, trichinelliasis, trichinosiswith muscle disorderpelvic region → B75 [M63.85-]
  • Trichinellosis, trichiniasis, trichinelliasis, trichinosiswith muscle disordershoulder region → B75 [M63.81-]
  • Trichinellosis, trichiniasis, trichinelliasis, trichinosiswith muscle disorderspecified site NEC → B75 [M63.88]

2 more, longer entries are not listed; the search box finds them by word.

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy