M33.13
✓ Billable
Other dermatomyositis without myopathy
ICD-10-CM · FY2026 · Diseases of the Musculoskeletal System and Connective Tissue
Code
M33.13
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Musculoskeletal System and Connective Tissue
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code M33.13?
ICD-10-CM code M33.13 represents Other dermatomyositis without myopathy. It is a billable diagnosis code in the Diseases of the Musculoskeletal System and Connective Tissue chapter, effective October 1, 2025 – September 30, 2026.
Is M33.13 billable?
Yes. M33.13 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is M33.13 in?
M33.13 belongs to the Diseases of the Musculoskeletal System and Connective Tissue chapter (M00–M99) of ICD-10-CM.
Related codes in the M33 category
M33
Dermatopolymyositis
Non-billable
M33.0
Juvenile dermatomyositis
Non-billable
M33.1
Other dermatomyositis
Non-billable
M33.2
Polymyositis
Non-billable
M33.9
Dermatopolymyositis, unspecified
Non-billable
M33.00
Juvenile dermatomyositis, organ involvement unspecified
Billable
M33.01
Juvenile dermatomyositis with respiratory involvement
Billable
M33.02
Juvenile dermatomyositis with myopathy
Billable
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