Is M33 a billable code?
No. M33 is a header code that groups 19 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
M33: Dermatopolymyositis
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
M33 groups related diagnoses under dermatopolymyositis. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under M33
- M33.00Juvenile dermatomyositis, organ involvement unspecified
- M33.01Juvenile dermatomyositis with respiratory involvement
- M33.02Juvenile dermatomyositis with myopathy
- M33.03Juvenile dermatomyositis without myopathy
- M33.09Juvenile dermatomyositis with other organ involvement
- M33.10Other dermatomyositis, organ involvement unspecified
- M33.11Other dermatomyositis with respiratory involvement
- M33.12Other dermatomyositis with myopathy
- M33.13Other dermatomyositis without myopathy
- M33.19Other dermatomyositis with other organ involvement
- M33.20Polymyositis, organ involvement unspecified
- M33.21Polymyositis with respiratory involvement
- M33.22Polymyositis with myopathy
- M33.29Polymyositis with other organ involvement
- M33.90Dermatopolymyositis, unspecified, organ involvement unspecified
- M33.91Dermatopolymyositis, unspecified with respiratory involvement
- M33.92Dermatopolymyositis, unspecified with myopathy
- M33.93Dermatopolymyositis, unspecified without myopathy
- M33.99Dermatopolymyositis, unspecified with other organ involvement
M33 questions
What does M33 mean?
M33 is the ICD-10-CM code for Dermatopolymyositis. It is in chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.