W20Header code — not billable
Struck by thrown, projected or falling object
- Chapter
- 20. External causes of morbidity
- Category
- W20
- Effective date
- October 1, 2026
Related codes in category W20
W20.0Struck by falling object in cave-inW20.0XXAStruck by falling object in cave-in, initial encounterYesW20.0XXDStruck by falling object in cave-in, subsequent encounterYesW20.0XXSStruck by falling object in cave-in, sequelaYesW20.1Struck by object due to collapse of buildingW20.1XXAStruck by object due to collapse of building, init encntrYesW20.1XXDStruck by object due to collapse of building, subs encntrYesW20.1XXSStruck by object due to collapse of building, sequelaYesW20.8Other cause of strike by thrown, projected or falling objectW20.8XXAOth cause of strike by thrown, projected or fall obj, initYesW20.8XXDOth cause of strike by thrown, projected or fall obj, subsYesW20.8XXSOth cause of strike by thrown, projected or fall obj, sqlaYes
Frequently asked questions
What is ICD-10 code W20?
W20 is an ICD-10-CM diagnosis code for Struck by thrown, projected or falling object.
Is W20 a billable code?
No. W20 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is W20 in?
W20 falls under Chapter 20: External causes of morbidity.
When did W20 become effective?
W20 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to W20?
W20 belongs to category W20, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.