Non-Billable / Non-Specific Code
ICD-10-CM W55 is the diagnosis code for Contact with other mammals. This code falls under the section "Exposure to animate mechanical forces" within Chapter 20 — External causes of morbidity (V00-Y99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as W55. They are mutually exclusive:
Understanding where W55 sits in the ICD-10-CM classification helps ensure proper coding:
No, W55 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
W55 is the ICD-10-CM diagnosis code for "Contact with other mammals". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
W55 is located in Section W50-W64 — "Exposure to animate mechanical forces" within Chapter 20 of the ICD-10-CM Tabular List.
W55 has 7 sub-code(s) that provide more specific detail: W55.0, W55.1, W55.2, W55.3, W55.4 and more.
Use W55 when the patients documented diagnosis matches "Contact with other mammals" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Contact with other mammals is W55.
No, W55 is non-billable. Use a more specific sub-code for primary diagnosis billing.
W55 is in Chapter 20 of the ICD-10-CM Tabular List.
Type 1 Excludes for W55 include: animal being ridden- see transport accidents; bitten or struck by dog (W54); bitten or struck by rodent (W53.-) and more.
Yes, W55 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.