MCMedicalCodingSoftware
W20.0

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

Non-billable headerICD-10-CM

W20.0 is a non-billable header ICD-10-CM code for struck by falling object in cave-in. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

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

A
initial encounter
D
subsequent encounter
S
sequela

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • asphyxiation due to cave-in (T71.21)

Excludes1 inherited from the categories above W20.0

A category’s note binds every code beneath it.

Written on W20: Struck by thrown, projected or falling object

  • 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.-)

Other codes that can never be billed with W20.0

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • W13.9Fall from, out of or through building, not otherwise specified
  • W13.9XXAFall from, out of or through building, not otherwise specified, initial encounter
  • W13.9XXDFall from, out of or through building, not otherwise specified, subsequent encounter
  • W13.9XXSFall from, out of or through building, not otherwise specified, sequela
  • W22.8Striking against or struck by other objects
  • W22.8XXAStriking against or struck by other objects, initial encounter
  • W22.8XXDStriking against or struck by other objects, subsequent encounter
  • W22.8XXSStriking against or struck by other objects, sequela

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Earth falling(on)
  • Rock falling on or hitting›in cave-in
  • Crushed›by›cave-in
  • Crushed›by›falling›earth, material
  • Struck by›object›falling›from, in, on›cave-in

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead W20.0

3 child codes. Green means billable.

Other codes under W20

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.