W40: Explosion of other materials
Codes under W40 (Explosion of other materials). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| W40.0 | Explosion of blasting material | — |
| W40.0 | Explosion of blasting material | — |
| W40.0XXA | Explosion of blasting material, initial encounter | ✓ |
| W40.0XXA | Explosion of blasting material, initial encounter | ✓ |
| W40.0XXD | Explosion of blasting material, subsequent encounter | ✓ |
| W40.0XXD | Explosion of blasting material, subsequent encounter | ✓ |
| W40.0XXS | Explosion of blasting material, sequela | ✓ |
| W40.0XXS | Explosion of blasting material, sequela | ✓ |
| W40.1 | Explosion of explosive gases | — |
| W40.1 | Explosion of explosive gases | — |
| W40.1XXA | Explosion of explosive gases, initial encounter | ✓ |
| W40.1XXA | Explosion of explosive gases, initial encounter | ✓ |
| W40.1XXD | Explosion of explosive gases, subsequent encounter | ✓ |
| W40.1XXD | Explosion of explosive gases, subsequent encounter | ✓ |
| W40.1XXS | Explosion of explosive gases, sequela | ✓ |
| W40.1XXS | Explosion of explosive gases, sequela | ✓ |
| W40.8 | Explosion of other specified explosive materials | — |
| W40.8 | Explosion of other specified explosive materials | — |
| W40.8XXA | Explosion of other specified explosive materials, initial encounter | ✓ |
| W40.8XXA | Explosion of other specified explosive materials, initial encounter | ✓ |
| W40.8XXD | Explosion of other specified explosive materials, subsequent encounter | ✓ |
| W40.8XXD | Explosion of other specified explosive materials, subsequent encounter | ✓ |
| W40.8XXS | Explosion of other specified explosive materials, sequela | ✓ |
| W40.8XXS | Explosion of other specified explosive materials, sequela | ✓ |
| W40.9 | Explosion of unspecified explosive materials | — |
| W40.9 | Explosion of unspecified explosive materials | — |
| W40.9XXA | Explosion of unspecified explosive materials, initial encounter | ✓ |
| W40.9XXA | Explosion of unspecified explosive materials, initial encounter | ✓ |
| W40.9XXD | Explosion of unspecified explosive materials, subsequent encounter | ✓ |
| W40.9XXD | Explosion of unspecified explosive materials, subsequent encounter | ✓ |
| W40.9XXS | Explosion of unspecified explosive materials, sequela | ✓ |
| W40.9XXS | Explosion of unspecified explosive materials, sequela | ✓ |
Frequently asked questions
What is ICD-10-CM code W40?
W40 is an ICD-10-CM category covering Explosion of other materials. It contains 32 more specific diagnosis codes, 24 of which are billable.
Is W40 a billable code?
No — W40 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example W40.0 — Explosion of blasting material). 24 of the 32 codes under W40 are billable.
What codes fall under W40?
W40 includes W40.0, W40.0, W40.0XXA, W40.0XXA, W40.0XXD, plus 27 more. See the full list with descriptions and billable status above.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free