ICD-10 · PDGM grouping
M33 Dermatopolymyositis
All 19 codes in the M33 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
19
Can lead a claim
19
Cannot lead a claim
0
What CMS assigns to M33
All 19 codes group to Musculoskeletal Rehabilitation. None of the 19 is assigned a comorbidity subgroup. Every code can lead a claim.
Every code in M33
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| M33.0 Juvenile dermatomyositis | ||||
| M33.00 | Juvenile dermatomyositis, organ involvement unspecified | Can lead a claim | E | None |
| M33.01 | Juvenile dermatomyositis with respiratory involvement | Can lead a claim | E | None |
| M33.02 | Juvenile dermatomyositis with myopathy | Can lead a claim | E | None |
| M33.03 | Juvenile dermatomyositis without myopathy | Can lead a claim | E | None |
| M33.09 | Juvenile dermatomyositis with other organ involvement | Can lead a claim | E | None |
| M33.1 Other dermatomyositis | ||||
| M33.10 | Other dermatomyositis, organ involvement unspecified | Can lead a claim | E | None |
| M33.11 | Other dermatomyositis with respiratory involvement | Can lead a claim | E | None |
| M33.12 | Other dermatomyositis with myopathy | Can lead a claim | E | None |
| M33.13 | Other dermatomyositis without myopathy | Can lead a claim | E | None |
| M33.19 | Other dermatomyositis with other organ involvement | Can lead a claim | E | None |
| M33.2 Polymyositis | ||||
| M33.20 | Polymyositis, organ involvement unspecified | Can lead a claim | E | None |
| M33.21 | Polymyositis with respiratory involvement | Can lead a claim | E | None |
| M33.22 | Polymyositis with myopathy | Can lead a claim | E | None |
| M33.29 | Polymyositis with other organ involvement | Can lead a claim | E | None |
| M33.9 Dermatopolymyositis, unspecified | ||||
| M33.90 | Dermatopolymyositis, unspecified, organ involvement unspecifiedCMS: Dermatopolymyositis, unsp, organ involvement unspecified | Can lead a claim | E | None |
| M33.91 | Dermatopolymyositis, unspecified with respiratory involvementCMS: Dermatopolymyositis, unsp with respiratory involvement | Can lead a claim | E | None |
| M33.92 | Dermatopolymyositis, unspecified with myopathy | Can lead a claim | E | None |
| M33.93 | Dermatopolymyositis, unspecified without myopathy | Can lead a claim | E | None |
| M33.99 | Dermatopolymyositis, unspecified with other organ involvementCMS: Dermatopolymyositis, unsp with other organ involvement | Can lead a claim | E | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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