W00.9XXA vs W28
W00.9XXA (Unspecified fall due to ice and snow, initial encounter) compared with W28 (Contact with powered lawn mower), 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. W00.9XXA carries an Excludes1 note covering W28: “fall (in) (from) machinery (in operation) (W28-W31)”
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
| W00.9XXAUnspecified fall due to ice and snow, initial encounter | W28Contact with powered lawn mower | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | V00-Y99 — External Causes of Morbidity (V00-Y99) | V00-Y99 — External Causes of Morbidity (V00-Y99) |
| Definition | Unspecified fall due to ice and snow, initial encounter is a billable ICD-10-CM diagnosis code (W00.9A). | Contact with powered lawn mower is a non-billable ICD-10-CM category code (W28). |
| 7th character | The appropriate 7th character is to be added to each code from category W00 | The appropriate 7th character is to be added to code W28 |
| Includes | pedestrian on foot falling (slipping) on ice and snow | Powered lawn mower (commercial) (residential) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources