Y00: Assault by blunt object
Codes under Y00 (Assault by blunt object). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| Y00.XXXA | Assault by blunt object, initial encounter | ✓ |
| Y00.XXXA | Assault by blunt object, initial encounter | ✓ |
| Y00.XXXD | Assault by blunt object, subsequent encounter | ✓ |
| Y00.XXXD | Assault by blunt object, subsequent encounter | ✓ |
| Y00.XXXS | Assault by blunt object, sequela | ✓ |
| Y00.XXXS | Assault by blunt object, sequela | ✓ |
Frequently asked questions
What is ICD-10-CM code Y00?
Y00 is an ICD-10-CM category covering Assault by blunt object. It contains 6 more specific diagnosis codes, 6 of which are billable.
Is Y00 a billable code?
No — Y00 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 Y00.XXXA — Assault by blunt object, initial encounter). 6 of the 6 codes under Y00 are billable.
What codes fall under Y00?
Y00 includes Y00.XXXA, Y00.XXXA, Y00.XXXD, Y00.XXXD, Y00.XXXS, plus 1 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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