W20: Struck by thrown, projected or falling object

Codes under W20 (Struck by thrown, projected or falling object). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

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

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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