ICDwise
W20 ⚠ Non-billable

Struck by thrown, projected or falling object

ICD-10-CM · FY2026 · External Causes of Morbidity

Code
W20
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
External Causes of Morbidity
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Official coding notes

From CMS's ICD-10-CM Tabular List.

Excludes1 — never code together
  • falling object in machinery accident (W24, W28-W31)
  • falling object in transport accident (V01-V99)
  • object set in motion by explosion (W35-W40)
  • object set in motion by firearm (W32-W34)
  • struck by thrown sports equipment (W21.-)
Code first
  • any associated:
  • cataclysm (X34-X39)
  • lightning strike (T75.00)
7th character
  • The appropriate 7th character is to be added to each code from category W20

Frequently asked questions

What is ICD-10 code W20?
ICD-10-CM code W20 represents Struck by thrown, projected or falling object. It is a non-billable header code requiring a more specific subcategory in the External Causes of Morbidity chapter, effective October 1, 2025 – September 30, 2026.
Is W20 billable?
No. W20 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is W20 in?
W20 belongs to the External Causes of Morbidity chapter (V00–Y99) of ICD-10-CM.

Related codes in the W20 category

W20.0 Struck by falling object in cave-in Non-billable W20.1 Struck by object due to collapse of building Non-billable W20.8 Other cause of strike by thrown, projected or falling object Non-billable W20.0XXA Struck by falling object in cave-in, initial encounter Billable W20.0XXD Struck by falling object in cave-in, subsequent encounter Billable W20.0XXS Struck by falling object in cave-in, sequela Billable W20.1XXA Struck by object due to collapse of building, initial encounter Billable W20.1XXD Struck by object due to collapse of building, subsequent encounter Billable

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