DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

M33 Dermatopolymyositis

  • Header · not billable

M33 is not billable. The category heads 19 billable codes in FY2027, grouped under 4 subdivisions.

Index → code

  • Dermatopolymyositis → M33.90
  • Dermatomucosomyositis → M33.10
  • Poikilodermatomyositis → M33.10

Where it sits

  1. Chapter 13 Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. M30-M36 Systemic connective tissue disorders (M30-M36)
  3. M33 Dermatopolymyositis
Billable codes
19
Subdivisions
4
CC / MCC codes
19 / 0
HCC V28 codes
19
New FY2027
0
Index entries
45

Codes in M33

  1. M33.0
    Juvenile dermatomyositis
    Header
  2. M33.00
    Juvenile dermatomyositis, organ involvement unspecified
    BillableCC93
  3. M33.01
    Juvenile dermatomyositis with respiratory involvement
    BillableCC93 280
  4. M33.02
    Juvenile dermatomyositis with myopathy
    BillableCC93
  5. M33.03
    Juvenile dermatomyositis without myopathy
    BillableCC93
  6. M33.09
    Juvenile dermatomyositis with other organ involvement
    BillableCC93
  7. M33.1
    Other dermatomyositis
    Header
    Inclusion terms 1

    Inclusion terms

    • Adult dermatomyositis
  8. M33.10
    Other dermatomyositis, organ involvement unspecified
    BillableCC93
  9. M33.11
    Other dermatomyositis with respiratory involvement
    BillableCC93 280
  10. M33.12
    Other dermatomyositis with myopathy
    BillableCC93
  11. M33.13
    Other dermatomyositis without myopathy
    BillableCC93
    Inclusion terms 1

    Inclusion terms

    • Dermatomyositis NOS
  12. M33.19
    Other dermatomyositis with other organ involvement
    BillableCC93
  13. M33.2
    Polymyositis
    Header
  14. M33.20
    Polymyositis, organ involvement unspecified
    BillableCC93
  15. M33.21
    Polymyositis with respiratory involvement
    BillableCC93 280
  16. M33.22
    Polymyositis with myopathy
    BillableCC93
  17. M33.29
    Polymyositis with other organ involvement
    BillableCC93
  18. M33.9
    Dermatopolymyositis, unspecified
    Header
  19. M33.90
    Dermatopolymyositis, unspecified, organ involvement unspecified
    BillableCC93
  20. M33.91
    Dermatopolymyositis, unspecified with respiratory involvement
    BillableCC93 280
  21. M33.92
    Dermatopolymyositis, unspecified with myopathy
    BillableCC93
  22. M33.93
    Dermatopolymyositis, unspecified without myopathy
    BillableCC93
  23. M33.99
    Dermatopolymyositis, unspecified with other organ involvement
    BillableCC93

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

Notes that also apply

Block M30-M36 instructions (Includes 4, Excludes1 1): printed on the block page.

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

Index entries

  • Dermatomucosomyositis → M33.10
  • Poikilodermatomyositis → M33.10
  • Polymyositis (acute) (chronic) (hemorrhagic) → M33.20
  • Dermatopolymyositis → M33.90
  • Dermatomyositis (acute) (chronic)juvenile → M33.00
  • Dermatopolymyositisjuvenile → M33.00
  • Dermatomyositis (acute) (chronic)adult → M33.10
  • Dermatomyositis (acute) (chronic)specified NEC → M33.10
  • Dermatopolymyositisspecified NEC → M33.10
  • Poikilodermatomyositisamyopathic → M33.13
  • Poikilodermatomyositiswithout myopathy → M33.13
  • Dermatopolymyositisamyopathic → M33.93
  • Dermatopolymyositiswithout myopathy → M33.93
  • Dermatomyositis (acute) (chronic)juvenileamyopathic → M33.03
  • Dermatomyositis (acute) (chronic)juvenilewithout myopathy → M33.03
  • Dermatopolymyositisjuvenileamyopathic → M33.03
  • Dermatopolymyositisjuvenilewithout myopathy → M33.03
  • Dermatomucosomyositiswithrespiratory involvement → M33.11
  • Dermatopolymyositisspecified NECrespiratory involvement → M33.11
  • Poikilodermatomyositiswithrespiratory involvement → M33.11
  • Dermatomucosomyositiswithmyopathy → M33.12
  • Dermatopolymyositisspecified NECmyopathy → M33.12
  • Poikilodermatomyositiswithmyopathy → M33.12
  • Dermatomyositis (acute) (chronic)specified NECamyopathic → M33.13
  • Dermatomyositis (acute) (chronic)specified NECwithout myopathy → M33.13
  • Dermatopolymyositisspecified NECamyopathic → M33.13
  • Dermatopolymyositisspecified NECwithout myopathy → M33.13
  • Dermatomucosomyositiswithspecified organ involvement NEC → M33.19
  • Dermatopolymyositisspecified NECspecified organ involvement NEC → M33.19
  • Poikilodermatomyositiswithspecified organ involvement NEC → M33.19
  • Polymyositis (acute) (chronic) (hemorrhagic)withrespiratory involvement → M33.21
  • Polymyositis (acute) (chronic) (hemorrhagic)withmyopathy → M33.22
  • Polymyositis (acute) (chronic) (hemorrhagic)withspecified organ involvement NEC → M33.29
  • Dermatopolymyositiswithrespiratory involvement → M33.91
  • Dermatopolymyositiswithmyopathy → M33.92
  • Dermatopolymyositiswithspecified organ involvement NEC → M33.99
  • Dermatomyositis (acute) (chronic)juvenilewithrespiratory involvement → M33.01
  • Dermatopolymyositisjuvenilewithrespiratory involvement → M33.01
  • Dermatomyositis (acute) (chronic)juvenilewithmyopathy → M33.02
  • Dermatopolymyositisjuvenilewithmyopathy → M33.02

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

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

Hierarchy