ICD-10-CM › V00-Y99 › W20-W49 › W40 Explosion of other materials › W40.1
Explosion of explosive gases
Not billableICD-10-CM diagnosis code.
This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.
Submit one of these 3 more specific codes instead:
- W40.1XXA Explosion of explosive gases, initial encounter
- W40.1XXD Explosion of explosive gases, subsequent encounter
- W40.1XXS Explosion of explosive gases, sequela
This code requires a seventh character. See the rule below.
What has happened to this code
Every change the publisher made, from 2014 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2014 Added to the draft code set draft Explosion of explosive gases
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from W40 Explosion of other materials
Seventh character required
- The appropriate 7th character is to be added to each code from category W40
Excludes1 - never coded here
- assault by explosive material (X96)
- explosion involving legal intervention (Y35.1-)
- explosion involving military or war operations (Y36.0-, Y36.2-)
- intentional self-harm by explosive material (X75)
Inherited from the W20-W49 section Exposure to inanimate mechanical forces (W20-W49)
Excludes1 - never coded here
- assault (X92-Y09)
- contact or collision with animals or persons (W50-W64)
- exposure to inanimate mechanical forces involving military or war operations (Y36.-, Y37.-)
- intentional self-harm (X71-X83)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Combustion, spontaneous
- Burn, burned, burning > ignition
- Contact > with > hot > liquid NEC
- Suffocation > due to, by > ignition
- Accident > caused by, due to > ignition
- Asphyxia, asphyxiation > from > ignition
- Poisoning > fumes or smoke due to > ignition
- Explosion > gas
- Explosion > mine
- Explosion > butane
- Explosion > methane
- Explosion > propane
- Explosion > coal gas
- Explosion > acetylene
- Explosion > fire-damp
- Explosion > explosive > gas
- Explosion > in, on > mine NEC
- Ignition > ether > in operating room
- Ignition > anesthetic gas in operating room
- Explosion > anesthetic gas in operating room
- Explosion > gasoline not in moving motor vehicle
Codes in the same group
| Code | Description | Status |
|---|---|---|
| W40.0 | Explosion of blasting material | Not billable |
| W40.8 | Explosion of other specified explosive materials | Not billable |
| W40.9 | Explosion of unspecified explosive materials | Not billable |