Y04: Assault by bodily force
Codes under Y04 (Assault by bodily force). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| Y04.0 | Assault by unarmed brawl or fight | — |
| Y04.0 | Assault by unarmed brawl or fight | — |
| Y04.0XXA | Assault by unarmed brawl or fight, initial encounter | ✓ |
| Y04.0XXA | Assault by unarmed brawl or fight, initial encounter | ✓ |
| Y04.0XXD | Assault by unarmed brawl or fight, subsequent encounter | ✓ |
| Y04.0XXD | Assault by unarmed brawl or fight, subsequent encounter | ✓ |
| Y04.0XXS | Assault by unarmed brawl or fight, sequela | ✓ |
| Y04.0XXS | Assault by unarmed brawl or fight, sequela | ✓ |
| Y04.1 | Assault by human bite | — |
| Y04.1 | Assault by human bite | — |
| Y04.1XXA | Assault by human bite, initial encounter | ✓ |
| Y04.1XXA | Assault by human bite, initial encounter | ✓ |
| Y04.1XXD | Assault by human bite, subsequent encounter | ✓ |
| Y04.1XXD | Assault by human bite, subsequent encounter | ✓ |
| Y04.1XXS | Assault by human bite, sequela | ✓ |
| Y04.1XXS | Assault by human bite, sequela | ✓ |
| Y04.2 | Assault by strike against or bumped into by another person | — |
| Y04.2 | Assault by strike against or bumped into by another person | — |
| Y04.2XXA | Assault by strike against or bumped into by another person, initial encounter | ✓ |
| Y04.2XXA | Assault by strike against or bumped into by another person, initial encounter | ✓ |
| Y04.2XXD | Assault by strike against or bumped into by another person, subsequent encounter | ✓ |
| Y04.2XXD | Assault by strike against or bumped into by another person, subsequent encounter | ✓ |
| Y04.2XXS | Assault by strike against or bumped into by another person, sequela | ✓ |
| Y04.2XXS | Assault by strike against or bumped into by another person, sequela | ✓ |
| Y04.8 | Assault by other bodily force | — |
| Y04.8 | Assault by other bodily force | — |
| Y04.8XXA | Assault by other bodily force, initial encounter | ✓ |
| Y04.8XXA | Assault by other bodily force, initial encounter | ✓ |
| Y04.8XXD | Assault by other bodily force, subsequent encounter | ✓ |
| Y04.8XXD | Assault by other bodily force, subsequent encounter | ✓ |
| Y04.8XXS | Assault by other bodily force, sequela | ✓ |
| Y04.8XXS | Assault by other bodily force, sequela | ✓ |
Frequently asked questions
What is ICD-10-CM code Y04?
Y04 is an ICD-10-CM category covering Assault by bodily force. It contains 32 more specific diagnosis codes, 24 of which are billable.
Is Y04 a billable code?
No — Y04 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 Y04.0 — Assault by unarmed brawl or fight). 24 of the 32 codes under Y04 are billable.
What codes fall under Y04?
Y04 includes Y04.0, Y04.0, Y04.0XXA, Y04.0XXA, Y04.0XXD, plus 27 more. See the full list with descriptions and billable status above.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free