W00.9XXA (Unspecified fall due to ice and snow, initial encounter) compared with X00 (Exposure to uncontrolled fire in building or structure), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Distinct conditions — both may be reported.
“fall (in) (from) burning building (X00.-)”
An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.
Source: CMS ICD-10-CM tabular instructional notes
Yes, when both are documented. W00.9XXA carries an Excludes2 note covering X00: “fall (in) (from) burning building (X00.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
| W00.9XXAUnspecified fall due to ice and snow, initial encounter | X00Exposure to uncontrolled fire in building or structure | |
|---|---|---|
| Billing status | Billable | Non-billable header Report instead: X00.0XXA, X00.0XXD, X00.0XXS, X00.1XXA, X00.1XXD |
| 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). | Exposure to uncontrolled fire in building or structure is a non-billable ICD-10-CM category code (X00). |
| 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 each code from category X00 |
| Includes | pedestrian on foot falling (slipping) on ice and snow | conflagration in building or structure |
| Code first | — | any associated cataclysm |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources