M20.1
ICD-10Non-billable categoryHallux valgus (acquired)
Official ICD-10-CM descriptor (FY2026)
Hallux valgus (acquired)
M20.1 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.
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- bunion (M21.6-)
ICD-10-CM FY2026 defines 3 codes beneath M20.1. See the ICD-10-CM index for what this site publishes.
Related codes in M20
Where this code sits
- Parent code
- M20
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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.