M33.90 ICD-10-CM Code: Dermatopolymyositis, unspecified, organ involvement unspecified
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
M33.90Dermatopolymyositis, unspecified, organ involvement unspecified
ICD-10-CM diagnosis code · United States clinical modification
Where M33.90 sits
- 1
Chapter 13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
- 2
Section
Systemic connective tissue disorders (M30-M36)
- 3
Category M33
Dermatopolymyositis
- 4
Subcategory M33.9
Dermatopolymyositis, unspecified
- 5
Code M33.90
Dermatopolymyositis, unspecified, organ involvement unspecified
Notes for this code
Inclusion terms
No inclusion terms are listed for M33.90.
Code first
No “code first” instruction is listed for M33.90.
Use additional code
No “use additional code” instruction is listed for M33.90.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for M33.90.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for M33.90.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code M33.90 mean?
M33.90 is the FY 2027 U.S. ICD-10-CM code for “Dermatopolymyositis, unspecified, organ involvement unspecified.”
Is M33.90 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, M33.90 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is M33.90 located in ICD-10-CM?
M33.90 is listed in Chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99), within Systemic connective tissue disorders (M30-M36) (M30–M36), under category M33, Dermatopolymyositis and subcategory M33.9, Dermatopolymyositis, unspecified.
What coding notes are listed for M33.90?
No inclusion terms are listed for M33.90 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.