W40.1XXA is the authoritative medical code for Explosion of explosive gases, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for explosion of explosive gases, initial encounter (ICD-10-CM W40.1XXA), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Explosion of explosive gases, initial encounter is a billable ICD-10-CM diagnosis code W40.1A. Inclusion terms: Explosion of acetylene; Explosion of butane; Explosion of coal gas; Explosion in mine NOS; Explosion of explosive gas; Explosion of fire damp; Explosion of gasoline fumes; Explosion of methane; Explosion of propane. Excludes1 (not 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; 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. 7th character: The appropriate 7th character is to be added to each code from category W40.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for W40.1XXA in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
- Explosion of acetylene
- Explosion of butane
- Explosion of coal gas
- Explosion in mine NOS
- Explosion of explosive gas
- Explosion of fire damp
- Explosion of gasoline fumes
- Explosion of methane
- Explosion of propane
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- 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
- 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
Frequently Asked Questions (FAQ) & Clinical Guidance
Does W40.1XXA require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category W40.
What can't be coded together with W40.1XXA?
Per official ICD-10-CM Excludes1 instructions, W40.1XXA must not be reported together with: 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).
What conditions are included under W40.1XXA?
Explosion of explosive gases, initial encounter includes: Explosion of acetylene; Explosion of butane; Explosion of coal gas; Explosion in mine NOS; Explosion of explosive gas.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to W40.1XXA in its code family, with their registry titles.
- W40 — Explosion of other materials
- W40.0 — Explosion of blasting material
- W40.0XXA — Explosion of blasting material, initial encounter
- W40.0XXD — Explosion of blasting material, subsequent encounter
- W40.0XXS — Explosion of blasting material, sequela
- W40.1 — Explosion of explosive gases
- W40.1XXD — Explosion of explosive gases, subsequent encounter
- W40.1XXS — Explosion of explosive gases, sequela
- W40.8 — Explosion of other specified explosive materials
- W40.8XXA — Explosion of other specified explosive materials, initial encounter
View all 16 codes in the W40 family