M16.1
ICD-10Non-billable categoryUnilateral primary osteoarthritis of hip
Official ICD-10-CM descriptor (FY2026)
Unilateral primary osteoarthritis of hip
M16.1 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.
Inclusion terms
- Primary osteoarthritis of hip NOS
ICD-10-CM FY2026 defines 3 codes beneath M16.1. See the ICD-10-CM index for what this site publishes.
Related codes in M16
- M16.0Bilateral primary osteoarthritis of hip
- M16.2Bilateral osteoarthritis resulting from hip dysplasia
- M16.3Unilateral osteoarthritis resulting from hip dysplasiacategory
- M16.4Bilateral post-traumatic osteoarthritis of hip
- M16.5Unilateral post-traumatic osteoarthritis of hipcategory
- M16.6Other bilateral secondary osteoarthritis of hip
- M16.7Other unilateral secondary osteoarthritis of hip
- M16.9Osteoarthritis of hip, unspecified
Where this code sits
- Parent code
- M16
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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.