ICD-10-CM W20: Struck by thrown, projected or falling object

ICD-10-CM Diagnosis Code (2025)

Official Description for W20

Struck by thrown, projected or falling object

Coding Notes & Guidelines for W20

Excludes1: Not Coded Here
  • 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.-)
Excludes1: Not Coded Here

struck by object due to collapse of burning building (X00.2, X02.2)

Excludes1: Not Coded Here

struck by thrown sports equipment (W21.-)

Excludes2: Not Included Here

asphyxiation due to cave-in (T71.21)

Code First
  • any associated:
  • cataclysm (X34-X39)
  • lightning strike (T75.00)
7th Character Guidance

The appropriate 7th character is to be added to each code from category W20

7th Character Definitions
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela

Child Codes (More Specific Codes for W20):

W20.0 - Struck by falling object in cave-in W20.1 - Struck by object due to collapse of building W20.8 - Other cause of strike by thrown, projected or falling object

About ICD-10-CM Code W20 (Struck by thrown)

ICD-10-CM code W20 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM W20 became effective on October 1, 2024.

This page provides detailed information about W20 - Struck by thrown, projected or falling object. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Struck by thrown related to projected or falling object.