W40.0XXA — Explosion of blasting material, initial encounter
Is W40.0XXA billable?
Yes — W40.0XXA is billable for FY2027. W40.0XXA is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. W40.0XXA may be submitted for encounters from October 1, 2026 through September 30, 2027.
W40.0XXA at a glance
| Code | W40.0XXA |
|---|---|
| Description | Explosion of blasting material, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in W40.0XXA?
In W40.0XXA, the 7th character A means initial encounter. The 7th character is required for W40.0XXA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
How is W40.0XXA listed in the External Cause Index?
The External Cause of Injuries Index lists these routes under W40.0, the nearest indexed parent of W40.0XXA. This is a separate index from the Alphabetic Index and is where external cause codes are looked up.
- Explosion › blasting (accidental) (of) (with secondary fire)
- Explosion › detonator (accidental) (of) (with secondary fire)
- Explosion › dynamite (accidental) (of) (with secondary fire)
- Explosion › explosive › in blasting operation (accidental) (of) (with secondary fire)
Inclusion terms
Alternative wording in documentation that is classified to W40.0XXA.
- Explosion of blasting cap
- Explosion of detonator
- Explosion of dynamite
- Explosion of explosive (any) used in blasting operations
Excludes1 — never code together — inherited from W20-W49
The conditions below can never be reported together with W40.0XXA on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from W40
The conditions below can never be reported together with W40.0XXA on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
How long has W40.0XXA existed?
W40.0XXA has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.