W21
ICD-10Non-billable categoryStriking against or struck by sports equipment
Official ICD-10-CM descriptor (FY2026)
Striking against or struck by sports equipment
W21 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.
- assault with sports equipment (Y08.0-)
- striking against or struck by sports equipment with subsequent fall (W18.01)
7th character
- The appropriate 7th character is to be added to each code from category W21
Permitted 7th characters
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
More specific codes under W21
- W21.0Struck by hit or thrown ballcategory
- W21.1Struck by bat, racquet or clubcategory
- W21.2Struck by hockey stick or puckcategory
- W21.3Struck by sports foot wearcategory
- W21.4Striking against diving boardcategory
- W21.8Striking against or struck by other sports equipmentcategory
- W21.9Striking against or struck by unspecified sports equipmentcategory
Where this code sits
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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.