M13 ICD-10-CM Code: Other arthritis
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
M13Other arthritis
ICD-10-CM diagnosis code · United States clinical modification
Where M13 sits
- 1
Chapter 13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
- 2
Section
Inflammatory polyarthropathies (M05-M14)
- 3
Category M13
Other arthritis
- 4
Code M13
Other arthritis
Codes under M13
M13 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Notes for this code
Inclusion terms
No inclusion terms are listed for M13.
Code first
No “code first” instruction is listed for M13.
Use additional code
No “use additional code” instruction is listed for M13.
Excludes1
Conditions that should not be reported together with this code.
- arthrosis (M15-M19)
- osteoarthritis (M15-M19)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for M13.
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 M13 mean?
M13 is the FY 2027 U.S. ICD-10-CM code for “Other arthritis.”
Is M13 a billable or specific ICD-10-CM code?
No. M13 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is M13 located in ICD-10-CM?
M13 is listed in Chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99), within Inflammatory polyarthropathies (M05-M14) (M05–M14), under category M13, Other arthritis.
What coding notes are listed for M13?
No inclusion terms are listed for M13 in this reference record. No code-first instruction is listed. Excludes1 notes: arthrosis (M15-M19); osteoarthritis (M15-M19). No Excludes2 note is listed.