Index to Diseases and Injuries
Polymyositis (acute) (chronic) (hemorrhagic)
Index code:M33.20
- with
- myopathy M33.22
- respiratory involvement M33.21
- skin involvement — see Dermatopolymyositis
- specified organ involvement NEC M33.29
- ossificans (generalisata) (progressiva) — see Myositis, ossificans, progressiva
Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.
Frequently asked questions
What is the ICD-10-CM code for Polymyositis?
The ICD-10-CM Alphabetic Index directs "Polymyositis" to M33.20. Subterms below it may lead to a more specific code. Always confirm the code in the Tabular List before assigning it.
ICD-10-CM Index to Diseases and Injuries maintained by CDC/NCHS (public domain), from the CMS FY2027 release.