DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 13

M60-M63 Disorders of muscles (M60-M63)

Block M60-M63 groups 4 categories with 420 billable codes in FY2027.

Where it sits

  1. Chapter 13 Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. M60-M63 Disorders of muscles (M60-M63)

Neighbouring blocks

Categories
4
Billable codes
420
CC codes
40
MCC codes
0
HCC V28 codes
0
New FY2027
0

Categories in M60-M63

  • M60

    Myositis

    Psoitis → M60.88

    • 111 billable codes
    • 39 CC
  • M61

    Calcification and ossification of muscle

    Calcificationmuscle → M61.9

    • 154 billable codes
  • M62

    Other disorders of muscle

    Amyotonia → M62.89

    • 131 billable codes
    • 1 CC
  • M63

    Disorders of muscle in diseases classified elsewhere

    –

    • 24 billable codes

Index main terms

  • Myositis → M60, M61 (95 entries)
  • Contraction(s), contracture, contracted → M62 (27 entries)
  • Atrophy, atrophic (of) → M62 (15 entries)
  • Calcification → M61 (13 entries)
  • Ossification → M61 (12 entries)
  • Diastasis → M62 (11 entries)
  • Granuloma → M60 (11 entries)
  • Infarct, infarction → M62 (11 entries)
  • Rupture, ruptured → M62 (11 entries)
  • Disorder (of) → M62 (2 entries)
  • Hernia, hernial (acquired) (recurrent) → M62 (2 entries)
  • Spasm(s), spastic, spasticity → M62 (2 entries)
  • Syndrome → M62 (2 entries)
  • Amyotonia → M62 (1 entry)
  • Charley-horse (quadriceps) → M62 (1 entry)

+24 more main terms; the search box finds them by word.

Block instructions

Excludes1

  • dermatopolymyositis (M33.-) M33
  • myopathy in amyloidosis (E85.-) E85
  • myopathy in polyarteritis nodosa (M30.0) M30.0
  • myopathy in rheumatoid arthritis (M05.32) M05.32
  • myopathy in scleroderma (M34.-) M34
  • myopathy in Sjögren's syndrome (M35.03) M35.03
  • myopathy in systemic lupus erythematosus (M32.-) M32

Excludes2

  • muscular dystrophies and myopathies (G71-G72) G71 G72

Notes that also apply

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