All ICD10 Codes

M33.1

Non-Billable
ChapterM00–M99
Ranksubcategory
Official Description

Other dermatomyositis

Use a more specific code (5 billable)
M33.10Other dermatomyositis, organ involvement unspecifiedM33.11Other dermatomyositis with respiratory involvementM33.12Other dermatomyositis with myopathyM33.13Other dermatomyositis without myopathyM33.19Other dermatomyositis with other organ involvement
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

Instructional Notes

Includes
  • Adult dermatomyositis
General instructions are available for the parent sections:
View CH13 NotesView M30-M36 Notes

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M30-M36Systemic connective tissue disorders (M30-M36)
M33Dermatopolymyositis
M33.1Other dermatomyositisNot billable
M33.10Other dermatomyositis, organ involvement unspecifiedBillable
M33.11Other dermatomyositis with respiratory involvementBillable
M33.12Other dermatomyositis with myopathyBillable
M33.13Other dermatomyositis without myopathyBillable
M33.19Other dermatomyositis with other organ involvementBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M33.1:

blockM30-M36
Systemic connective tissue disorders (M30-M36)
View context instructions
chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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