W55.1Header code — not billable
Contact with horse
- Chapter
- 20. External causes of morbidity
- Category
- W55
- Effective date
- October 1, 2026
Related codes in category W55
W55Contact with other mammalsW55.0Contact with catW55.01Bitten by catW55.01XABitten by cat, initial encounterYesW55.01XDBitten by cat, subsequent encounterYesW55.01XSBitten by cat, sequelaYesW55.03Scratched by catW55.03XAScratched by cat, initial encounterYesW55.03XDScratched by cat, subsequent encounterYesW55.03XSScratched by cat, sequelaYesW55.09Other contact with catW55.09XAOther contact with cat, initial encounterYes
Frequently asked questions
What is ICD-10 code W55.1?
W55.1 is an ICD-10-CM diagnosis code for Contact with horse.
Is W55.1 a billable code?
No. W55.1 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 W55.1 in?
W55.1 falls under Chapter 20: External causes of morbidity.
When did W55.1 become effective?
W55.1 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to W55.1?
W55.1 belongs to category W55, 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.