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 | — |
| W20.0 | Struck by falling object in cave-in | — |
| W20.0XXA | Struck by falling object in cave-in, initial encounter | ✓ |
| W20.0XXA | Struck by falling object in cave-in, initial encounter | ✓ |
| W20.0XXD | Struck by falling object in cave-in, subsequent encounter | ✓ |
| W20.0XXD | Struck by falling object in cave-in, subsequent encounter | ✓ |
| W20.0XXS | Struck by falling object in cave-in, sequela | ✓ |
| W20.0XXS | Struck by falling object in cave-in, sequela | ✓ |
| W20.1 | Struck by object due to collapse of building | — |
| W20.1 | Struck by object due to collapse of building | — |
| W20.1XXA | Struck by object due to collapse of building, initial encounter | ✓ |
| W20.1XXA | Struck by object due to collapse of building, initial encounter | ✓ |
| W20.1XXD | Struck by object due to collapse of building, subsequent encounter | ✓ |
| W20.1XXD | Struck by object due to collapse of building, subsequent encounter | ✓ |
| W20.1XXS | Struck by object due to collapse of building, sequela | ✓ |
| W20.1XXS | Struck by object due to collapse of building, sequela | ✓ |
| W20.8 | Other cause of strike by thrown, projected or falling object | — |
| 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 | ✓ |
| W20.8XXA | 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 | ✓ |
| W20.8XXD | 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 | ✓ |
| W20.8XXS | Other cause of strike by thrown, projected or falling object, sequela | ✓ |
Frequently asked questions
What is ICD-10-CM code W20?
W20 is an ICD-10-CM category covering Struck by thrown, projected or falling object. It contains 24 more specific diagnosis codes, 18 of which are billable.
Is W20 a billable code?
No — W20 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example W20.0 — Struck by falling object in cave-in). 18 of the 24 codes under W20 are billable.
What codes fall under W20?
W20 includes W20.0, W20.0, W20.0XXA, W20.0XXA, W20.0XXD, plus 19 more. See the full list with descriptions and billable status above.
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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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