Y04.1Header code — not billable
Assault by human bite
- Chapter
- 20. External causes of morbidity
- Category
- Y04
- Effective date
- October 1, 2026
Related codes in category Y04
Y04Assault by bodily forceY04.0Assault by unarmed brawl or fightY04.0XXAAssault by unarmed brawl or fight, initial encounterYesY04.0XXDAssault by unarmed brawl or fight, subsequent encounterYesY04.0XXSAssault by unarmed brawl or fight, sequelaYesY04.1XXAAssault by human bite, initial encounterYesY04.1XXDAssault by human bite, subsequent encounterYesY04.1XXSAssault by human bite, sequelaYesY04.2Assault by strike against or bumped into by another personY04.2XXAAsslt by strike agnst or bumped into by another person, initYesY04.2XXDAsslt by strike agnst or bumped into by another person, subsYesY04.2XXSAsslt by strike agnst or bumped into by another person, sqlaYes
Frequently asked questions
What is ICD-10 code Y04.1?
Y04.1 is an ICD-10-CM diagnosis code for Assault by human bite.
Is Y04.1 a billable code?
No. Y04.1 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is Y04.1 in?
Y04.1 falls under Chapter 20: External causes of morbidity.
When did Y04.1 become effective?
Y04.1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to Y04.1?
Y04.1 belongs to category Y04, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.