W20
Non-billableStruck by thrown, projected or falling object
Struck by thrown, projected or falling object
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- •assaultX92-Y09
- •contact or collision with animals or personsW50-W64
- •exposure to inanimate mechanical forces involving military or war operations,Y36, Y37
- •intentional self-harmX71-X83
- •falling object in machinery accident,W24, W28-W31
- •falling object in transport accidentV01-V99
- •object set in motion by explosionW35-W40
- •object set in motion by firearmW32-W34
- •struck by thrown sports equipmentW21
Code First
The underlying condition must be sequenced before this code
- any associated:
- •cataclysmX34-X39
- •lightning strikeT75.00
7th Character Definitions
- A - initial encounter
- D - subsequent encounter
- S - sequela
Child Codes (3)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(1)
Frequently Asked Questions
What is the ICD-10 code for struck by thrown, projected or falling object?
The ICD-10-CM code for struck by thrown, projected or falling object is W20. The full clinical description is "Struck by thrown, projected or falling object". W20 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code W20 mean?
ICD-10-CM code W20 represents “Struck by thrown, projected or falling object”. It is classified under Chapter 21: External Causes of Morbidity and is a non-billable header code. Use a more specific child code for billing purposes.
Is W20 a billable code?
No, W20 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under W20.
What chapter is W20 in?
W20 is in Chapter 21: External Causes of Morbidity (codes V00-Y99).
What codes cannot be used with W20?
W20 has Excludes1 notes indicating codes that cannot be used together with it, including: assault (X92-Y09); contact or collision with animals or persons (W50-W64); exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-); and 6 more.
What are the subcategories under W20?
W20 has 3 child codes, including: 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).
What are the UMLS CUIs for W20?
W20 is linked to 1 UMLS Concept Unique Identifier: C0478903. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does W20 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like struck by thrown, projected or falling object affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of W20?
W20 maps to the ICD-11 code: PA81 (Unintentionally struck by moving object).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.