M33.29: Polymyositis with other organ involvement
M33.29 is a billable, specific ICD-10-CM code for polymyositis with other organ involvement. It is valid for submission on a claim.
Check M33.29 with the rest of the claim: free scrubberOther codes that can never be billed with M33.29
Their own Excludes1 notes name this code, so the conflict is not listed above.
- G72Other and unspecified myopathies
Risk adjustment
M33.29 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 93 Rheumatoid Arthritis and Other Specified Inflammatory Rheumatic Disorders0.617 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.
Medicare coverage
M33.29 is named in 26 Medicare coverage policies: 19 listing it as supporting medical necessity, and 7 listing it as NOT covered. Which one applies depends on your Medicare contractor.
- A58865Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
- A58883Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
- A58893Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
- A59374Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
Alphabetic index entries that lead here
- Polymyositis›with›specified organ involvement NEC
Code history
Unchanged in every release from FY2024 to FY2027.