ICD-10-CM Codes
V00-Y99
W50-W64
W55-
2023 ICD-10-CM Diagnosis Code W55

2023 ICD-10-CM Diagnosis Code W55

Contact with other mammals

2016

2017

2018

2019

2020

2021

2022

2023

Non-Billable/Non-Specific Code

W55 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2023 edition of ICD-10-CM W55 became effective on October 1, 2022.
This is the American ICD-10-CM version of W55 - other international versions of ICD-10 W55 may differ.

ICD-10-CM Coding Rules

W55 describes the circumstance causing an injury, not the nature of the injury.

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as W55. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

animal being ridden- see transport accidents
bitten or struck by dog (
ICD-10-CM Diagnosis Code W54
Contact with dog
Includes
- contact with saliva, feces or urine of dog
W54
)
bitten or struck by rodent (
ICD-10-CM Diagnosis Code W53
- W53 Contact with rodent
  - W53.0 Contact with mouse
    - W53.01 Bitten by mouse
      W53.01XA …… initial encounter
      W53.01XD …… subsequent encounter
      W53.01XS …… sequela
    - W53.09 Other contact with mouse
      W53.09XA …… initial encounter
      W53.09XD Other contact with mouse, subsequent encounte...
      W53.09XS …… sequela
  - W53.1 Contact with rat
    - W53.11 Bitten by rat
      W53.11XA …… initial encounter
      W53.11XD …… subsequent encounter
      W53.11XS …… sequela
    - W53.19 Other contact with rat
      W53.19XA …… initial encounter
      W53.19XD …… subsequent encounter
      W53.19XS …… sequela
  - W53.2 Contact with squirrel
    - W53.21 Bitten by squirrel
      W53.21XA …… initial encounter
      W53.21XD …… subsequent encounter
      W53.21XS …… sequela
    - W53.29 Other contact with squirrel
      W53.29XA Other contact with squirrel, initial encounte...
      W53.29XD Other contact with squirrel, subsequent encou...
      W53.29XS …… sequela
  - W53.8 Contact with other rodent
    - W53.81 Bitten by other rodent
      W53.81XA …… initial encounter
      W53.81XD …… subsequent encounter
      W53.81XS …… sequela
    - W53.89 Other contact with other rodent
      W53.89XA Other contact with other rodent, initial enco...
      W53.89XD Other contact with other rodent, subsequent e...
      W53.89XS …… sequela
W53.-
)
contact with marine mammals (
ICD-10-CM Diagnosis Code W56
- W56 Contact with nonvenomous marine animal
  - W56.0 Contact with dolphin
    - W56.01 Bitten by dolphin
      W56.01XA …… initial encounter
      W56.01XD …… subsequent encounter
      W56.01XS …… sequela
    - W56.02 Struck by dolphin
      W56.02XA …… initial encounter
      W56.02XD …… subsequent encounter
      W56.02XS …… sequela
    - W56.09 Other contact with dolphin
      W56.09XA Other contact with dolphin, initial encounter...
      W56.09XD Other contact with dolphin, subsequent encoun...
      W56.09XS …… sequela
  - W56.1 Contact with sea lion
    - W56.11 Bitten by sea lion
      W56.11XA …… initial encounter
      W56.11XD …… subsequent encounter
      W56.11XS …… sequela
    - W56.12 Struck by sea lion
      W56.12XA …… initial encounter
      W56.12XD …… subsequent encounter
      W56.12XS …… sequela
    - W56.19 Other contact with sea lion
      W56.19XA Other contact with sea lion, initial encounte...
      W56.19XD Other contact with sea lion, subsequent encou...
      W56.19XS …… sequela
  - W56.2 Contact with orca
    - W56.21 Bitten by orca
      W56.21XA …… initial encounter
      W56.21XD …… subsequent encounter
      W56.21XS …… sequela
    - W56.22 Struck by orca
      W56.22XA …… initial encounter
      W56.22XD …… subsequent encounter
      W56.22XS …… sequela
    - W56.29 Other contact with orca
      W56.29XA …… initial encounter
      W56.29XD Other contact with orca, subsequent encounter...
      W56.29XS …… sequela
  - W56.3 Contact with other marine mammals
    - W56.31 Bitten by other marine mammals
      W56.31XA Bitten by other marine mammals, initial encou...
      W56.31XD Bitten by other marine mammals, subsequent en...
      W56.31XS …… sequela
    - W56.32 Struck by other marine mammals
      W56.32XA Struck by other marine mammals, initial encou...
      W56.32XD Struck by other marine mammals, subsequent en...
      W56.32XS …… sequela
    - W56.39 Other contact with other marine mammals
      W56.39XA Other contact with other marine mammals, init...
      W56.39XD Other contact with other marine mammals, subs...
      W56.39XS Other contact with other marine mammals, sequ...
  - W56.4 Contact with shark
    - W56.41 Bitten by shark
      W56.41XA …… initial encounter
      W56.41XD …… subsequent encounter
      W56.41XS …… sequela
    - W56.42 Struck by shark
      W56.42XA …… initial encounter
      W56.42XD …… subsequent encounter
      W56.42XS …… sequela
    - W56.49 Other contact with shark
      W56.49XA …… initial encounter
      W56.49XD Other contact with shark, subsequent encounte...
      W56.49XS …… sequela
  - W56.5 Contact with other fish
    - W56.51 Bitten by other fish
      W56.51XA …… initial encounter
      W56.51XD …… subsequent encounter
      W56.51XS …… sequela
    - W56.52 Struck by other fish
      W56.52XA …… initial encounter
      W56.52XD …… subsequent encounter
      W56.52XS …… sequela
    - W56.59 Other contact with other fish
      W56.59XA Other contact with other fish, initial encoun...
      W56.59XD Other contact with other fish, subsequent enc...
      W56.59XS …… sequela
  - W56.8 Contact with other nonvenomous marine animals...
    - W56.81 Bitten by other nonvenomous marine animals
      W56.81XA Bitten by other nonvenomous marine animals, i...
      W56.81XD Bitten by other nonvenomous marine animals, s...
      W56.81XS Bitten by other nonvenomous marine animals, s...
    - W56.82 Struck by other nonvenomous marine animals
      W56.82XA Struck by other nonvenomous marine animals, i...
      W56.82XD Struck by other nonvenomous marine animals, s...
      W56.82XS Struck by other nonvenomous marine animals, s...
    - W56.89 Other contact with other nonvenomous marine a...
      W56.89XA Other contact with other nonvenomous marine a...
      W56.89XD Other contact with other nonvenomous marine a...
      W56.89XS Other contact with other nonvenomous marine a...
W56.-
)

Includes

Includes Help

"Includes" further defines, or give examples of, the content of the code or category.

contact with saliva, feces or urine of mammal

The following code(s) above W55 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to W55:

V00-Y99
2023 ICD-10-CM Range V00-Y99
External causes of morbidity
Note
- This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.
External causes of morbidity
W50-W64
2023 ICD-10-CM Range W50-W64
Exposure to animate mechanical forces
Type 1 Excludes
- Toxic effect of contact with venomous animals and plants (T63.-)
Exposure to animate mechanical forces

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

ICD-10-CM Codes Adjacent To W55

W54.0XXD …… subsequent encounter

W54.0XXS …… sequela

W54.1 Struck by dog

W54.1XXA …… initial encounter

W54.1XXD …… subsequent encounter

W54.1XXS …… sequela

W54.8 Other contact with dog

W54.8XXA …… initial encounter

W54.8XXD …… subsequent encounter

W54.8XXS …… sequela

W55 Contact with other mammals

W55.0 Contact with cat

W55.01 Bitten by cat

W55.01XA …… initial encounter

W55.01XD …… subsequent encounter

W55.01XS …… sequela

W55.03 Scratched by cat

W55.03XA …… initial encounter

W55.03XD …… subsequent encounter

W55.03XS …… sequela

W55.09 Other contact with cat

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code W55

Contact with other mammals

Contact with dog

External causes of morbidity

Exposure to animate mechanical forces