M12
ICD-10Non-billable categoryOther and unspecified arthropathy
Official ICD-10-CM descriptor (FY2026)
Other and unspecified arthropathy
M12 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- arthrosis (M15-M19)
- cricoarytenoid arthropathy (J38.7)
More specific codes under M12
- M12.0Chronic postrheumatic arthropathy [Jaccoud]category
- M12.1Kaschin-Beck diseasecategory
- M12.2Villonodular synovitis (pigmented)category
- M12.3Palindromic rheumatismcategory
- M12.4Intermittent hydrarthrosiscategory
- M12.5Traumatic arthropathycategory
- M12.8Other specific arthropathies, not elsewhere classifiedcategory
- M12.9Arthropathy, unspecified
Where this code sits
Krasyn AI Coder
Get code suggestions automatically as you type notes. Free for 50 analyses.
Install for Chrome — freeSource
ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.