W35 vs X05
W35 (Explosion and rupture of boiler) compared with X05 (Exposure to ignition or melting of nightwear), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. X05 carries an Excludes2 note covering W35: “explosions (W35-W40)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| W35Explosion and rupture of boiler | X05Exposure to ignition or melting of nightwear | |
|---|---|---|
| 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 | Explosion and rupture of boiler is a non-billable ICD-10-CM category code (W35). | Exposure to ignition or melting of nightwear is a non-billable ICD-10-CM category code (X05). |
| 7th character | The appropriate 7th character is to be added to code W35 | The appropriate 7th character is to be added to code X05 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources