ICD-10-CM 2027 diagnosis code
W53.01Bitten by mouse
W53.01 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About W53.01
W53.01 is the ICD-10-CM diagnosis code for Bitten by mouse. It belongs to category W53 (contact with rodent), block W50-W64 (exposure to animate mechanical forces) and chapter 20 (external causes of morbidity). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
Within W53.0 (contact with mouse), W53.01 is specifically for Bitten by mouse. Related codes cover other contact with mouse (W53.09).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
7th character
The appropriate 7th character is to be added to each code from category W53
Notes that apply from higher levels
Instructions written at a parent level also apply to W53.01.
› From W53 Contact with rodent
- contact with saliva, feces or urine of rodent
Broader instructions also apply from W50-W64 Exposure to animate mechanical forces and Chapter 20: External causes of morbidity.
Alphabetic index entries
3 entriesTerms in the official ICD-10-CM index that lead to W53.01.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about W53.01
Is W53.01 billable?
- No. W53.01 is a header code. Report one of its more specific subcodes instead.