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W55

Non-billable

Contact with other mammals

W55 is the ICD-10-CM code for Contact with other mammals. It is a non-billable category code — use a more specific child code such as W55.0 for billing.

Status
Header (non-billable)
Chapter
V00-Y99
Subcodes
7
Edition
FY2026

V00-Y99 External causes of morbidity

Includes

  • •contact with saliva, feces or urine of mammal

Excludes1 — not coded here

  • •animal being ridden- see transport accidents
  • •bitten or struck by dog (W54)
  • •bitten or struck by rodent (W53.-)
  • •contact with marine mammals (W56.-)

Frequently asked questions

What is ICD-10 code W55?
W55 is the ICD-10-CM code for "Contact with other mammals". It falls under V00-Y99 External causes of morbidity.
Is W55 a billable code?
No — W55 is a non-billable header code. Use a more specific child code (such as W55.0) for billing.
What are the subcodes of W55?
W55 has 7 more specific child codes, including W55.0, W55.1, W55.2.
What is excluded from W55?
Excludes1 (not coded here): animal being ridden- see transport accidents; bitten or struck by dog (W54); bitten or struck by rodent (W53.-); contact with marine mammals (W56.-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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