2025
ICD-10-CM
Diagnosis
Code

W55 Contact with other mammals

Non-billable
2016–2025

W55 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Contact with other mammals.

Includes

Contact with saliva, feces or urine of mammal

Type 1 excludes

Animal being ridden- see transport accidents
Bitten or struck by dog (W54)
Bitten or struck by rodent (W53.-)
Contact with marine mammals (W56.-)

Seventh character note

The appropriate 7th character is to be added to each code from category W55

Seventh character extensions

A: initial encounter
D: subsequent encounter
S: sequela

Codes

Versions

2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code