W28 vs W64
W28 (Contact with powered lawn mower) compared with W64 (Exposure to other animate mechanical forces), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. W28 carries an Excludes1 note covering W64: “contact or collision with animals or persons (W50-W64)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| W28Contact with powered lawn mower | W64Exposure to other animate mechanical forces | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | V00-Y99 — External Causes of Morbidity (V00-Y99) | V00-Y99 — External Causes of Morbidity (V00-Y99) |
| Definition | Contact with powered lawn mower is a non-billable ICD-10-CM category code (W28). | Exposure to other animate mechanical forces is a non-billable ICD-10-CM category code (W64). |
| 7th character | The appropriate 7th character is to be added to code W28 | The appropriate 7th character is to be added to code W64 |
| Includes | Powered lawn mower (commercial) (residential) | exposure to nonvenomous animal NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources