M33.13

✓ Billable

Other dermatomyositis without myopathy

Diseases of the musculoskeletal system and connective tissue (M00-M99)

Also Known As

Dermatomyositis NOS

✅ No additional coding notes for M33.13

🧪 Validate Combinations

Add M33.13 to the Excludes Checker to validate against your full code list.

Code Information

CodeM33.13

BillableYes

ParentM33.1

CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)

Excludes10 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)