W55Not billable, use a more specific code below
Contact with other mammals
In Exposure to animate mechanical forces (W50-W64), chapter 20: External Causes of Morbidity
63 billable codes under W55: none are a CC or MCC; none map to an HCC.
Advertisements
Instructional notes
Also applies, from Exposure to animate mechanical forces (W50-W64)
These notes sit on W50-W64 and apply to every code under it, including W55.
Excludes1: not coded here, use a different code
- Toxic effect of contact with venomous animals and plants (T63.-)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers how to report external cause codes (V00-Y99) describing cause, intent, place, activity, and status. They are never principal or first-listed, and reporting is voluntary unless required.
- General External Cause Coding Guidelines (page 88)
- Place of Occurrence Guideline (page 89)
- Activity Code (page 89)
- Place of Occurrence, Activity, and Status Codes Used with other External Cause Code (page 89)
- If the Reporting Format Limits the Number of External Cause Codes (page 90)
- Multiple External Cause Coding Guidelines (page 90)
- Child and Adult Abuse Guideline (page 90)
- Unknown or Undetermined Intent Guideline (page 91)
All codes under W55
W55 can't be used on a claim. Pick a billable code below; grey headings group them.
- W55.0Contact with cat
- W55.01Bitten by cat
- W55.01XABitten by cat, initial encounter
- W55.01XDBitten by cat, subsequent encounter
- W55.01XSBitten by cat, sequela
- W55.03Scratched by cat
- W55.03XAScratched by cat, initial encounter
- W55.03XDScratched by cat, subsequent encounter
- W55.03XSScratched by cat, sequela
- W55.09Other contact with cat
- W55.09XAOther contact with cat, initial encounter
- W55.09XDOther contact with cat, subsequent encounter
- W55.09XSOther contact with cat, sequela
- W55.1Contact with horse
- W55.11Bitten by horse
- W55.11XABitten by horse, initial encounter
- W55.11XDBitten by horse, subsequent encounter
- W55.11XSBitten by horse, sequela
- W55.12Struck by horse
- W55.12XAStruck by horse, initial encounter
- W55.12XDStruck by horse, subsequent encounter
- W55.12XSStruck by horse, sequela
- W55.19Other contact with horse
- W55.19XAOther contact with horse, initial encounter
- W55.19XDOther contact with horse, subsequent encounter
- W55.19XSOther contact with horse, sequela
- W55.2Contact with cow
- W55.21Bitten by cow
- W55.21XABitten by cow, initial encounter
- W55.21XDBitten by cow, subsequent encounter
- W55.21XSBitten by cow, sequela
- W55.22Struck by cow
- W55.22XAStruck by cow, initial encounter
- W55.22XDStruck by cow, subsequent encounter
- W55.22XSStruck by cow, sequela
- W55.29Other contact with cow
- W55.29XAOther contact with cow, initial encounter
- W55.29XDOther contact with cow, subsequent encounter
- W55.29XSOther contact with cow, sequela
- W55.3Contact with other hoof stock
- W55.31Bitten by other hoof stock
- W55.31XABitten by other hoof stock, initial encounter
- W55.31XDBitten by other hoof stock, subsequent encounter
- W55.31XSBitten by other hoof stock, sequela
- W55.32Struck by other hoof stock
- W55.32XAStruck by other hoof stock, initial encounter
- W55.32XDStruck by other hoof stock, subsequent encounter
- W55.32XSStruck by other hoof stock, sequela
- W55.39Other contact with other hoof stock
- W55.39XAOther contact with other hoof stock, initial encounter
- W55.39XDOther contact with other hoof stock, subsequent encounter
- W55.39XSOther contact with other hoof stock, sequela
- W55.4Contact with pig
- W55.41Bitten by pig
- W55.41XABitten by pig, initial encounter
- W55.41XDBitten by pig, subsequent encounter
- W55.41XSBitten by pig, sequela
- W55.42Struck by pig
- W55.42XAStruck by pig, initial encounter
- W55.42XDStruck by pig, subsequent encounter
- W55.42XSStruck by pig, sequela
- W55.49Other contact with pig
- W55.49XAOther contact with pig, initial encounter
- W55.49XDOther contact with pig, subsequent encounter
- W55.49XSOther contact with pig, sequela
- W55.5Contact with raccoon
- W55.51Bitten by raccoon
- W55.51XABitten by raccoon, initial encounter
- W55.51XDBitten by raccoon, subsequent encounter
- W55.51XSBitten by raccoon, sequela
- W55.52Struck by raccoon
- W55.52XAStruck by raccoon, initial encounter
- W55.52XDStruck by raccoon, subsequent encounter
- W55.52XSStruck by raccoon, sequela
- W55.59Other contact with raccoon
- W55.59XAOther contact with raccoon, initial encounter
- W55.59XDOther contact with raccoon, subsequent encounter
- W55.59XSOther contact with raccoon, sequela
- W55.8Contact with other mammals
- W55.81Bitten by other mammals
- W55.81XABitten by other mammals, initial encounter
- W55.81XDBitten by other mammals, subsequent encounter
- W55.81XSBitten by other mammals, sequela
- W55.82Struck by other mammals
- W55.82XAStruck by other mammals, initial encounter
- W55.82XDStruck by other mammals, subsequent encounter
- W55.82XSStruck by other mammals, sequela
- W55.89Other contact with other mammals
- W55.89XAOther contact with other mammals, initial encounter
- W55.89XDOther contact with other mammals, subsequent encounter
- W55.89XSOther contact with other mammals, sequela
W55 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
Code history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.