M12 ICD-10-CM Code: Other and unspecified arthropathy
A clear reference for the official code description, hierarchy, and related coding information from the April 2026 U.S. release.
Code definition
Official description
M12Other and unspecified arthropathy
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where M12 sits
- 1
Chapter 13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
- 2
Section
Inflammatory polyarthropathies (M05-M14)
- 3
Category M12
Other and unspecified arthropathy
- 4
Code M12
Other and unspecified arthropathy
More specific choices
Codes under M12
M12 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for M12.
Code first
No “code first” instruction is listed for M12.
Use additional code
No “use additional code” instruction is listed for M12.
Excludes1
Conditions that should not be reported together with this code.
- arthrosis (M15-M19)
- cricoarytenoid arthropathy (J38.7)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for M12.
Transparency
Source and release
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.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code M12 mean?
M12 is the April 2026 U.S. ICD-10-CM code for “Other and unspecified arthropathy.”
Is M12 a billable or specific ICD-10-CM code?
No. M12 has more specific child codes in the April 2026 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is M12 located in ICD-10-CM?
M12 is listed in Chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99), within Inflammatory polyarthropathies (M05-M14) (M05–M14), under category M12, Other and unspecified arthropathy.
What coding notes are listed for M12?
No inclusion terms are listed for M12 in this reference record. No code-first instruction is listed. Excludes1 notes: arthrosis (M15-M19); cricoarytenoid arthropathy (J38.7). No Excludes2 note is listed.
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