S91.0

ICD-10Non-billable category

Open wound of ankle

Official ICD-10-CM descriptor (FY2026)

Open wound of ankle

S91.0 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.

ICD-10-CM FY2026 defines 6 codes beneath S91.0. See the ICD-10-CM index for what this site publishes.

Related codes in S91

Where this code sits

Chapter: 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
Block: Injuries to the ankle and foot (S90-S99)
Parent code: S91

Krasyn AI Coder

Get code suggestions automatically as you type notes. Free for 50 analyses.

Install for Chrome — free

Source

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.