W20.0 – Struck by falling object in cave-in

ICD-10-CM 2027 diagnosis code · Exposure to inanimate mechanical forces

Non-billable header

ICD-10-CM code W20.0
Code
W20.0 (claims format: W200)
Description
Struck by falling object in cave-in
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
20. External causes of morbidity (V00-Y99)
Block
W20-W49 Exposure to inanimate mechanical forces
Parent codes
W20

Billable codes under W20.0

W20.0 is a header code and cannot be used on claims. Choose the most specific code:

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).

CharacterMeaning
Ainitial encounter
Dsubsequent encounter
Ssequela

Notes for W20.0

Excludes2 (not included here):
  • asphyxiation due to cave-in (T71.21)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

W20 – Struck by thrown, projected or falling object

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.-)
Code first:
7th character note:
  • The appropriate 7th character is to be added to each code from category W20

Block W20-W49

Excludes1 (not coded here):
  • assault (X92-Y09)
  • contact or collision with animals or persons (W50-W64)
  • exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
  • intentional self-harm (X71-X83)

Related codes in W20

Frequently asked questions

What is ICD-10 code W20.0?

W20.0 is the ICD-10-CM code for struck by falling object in cave-in, in the block W20-W49 (Exposure to inanimate mechanical forces).

Is W20.0 a billable code?

No. W20.0 is a header code with more specific child codes; report one of the billable codes listed above.

What category does W20.0 belong to?

It belongs to category W20 – Struck by thrown, projected or falling object.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.