W40.9 Explosion of unspecified explosive materials

Non-billable ICD-10-CM code.

Applicable to

• Explosion NOS

Applies from W40 Explosion of other materials

Excludes1 (never code together)

• 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)

7th character note

• The appropriate 7th character is to be added to each code from category W40

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Code annotations containing back-references to W40.9

Back-references to W40

• Type 1 Excludes: W20 Struck by thrown, projected or falling object ("object set in motion by explosion (W35-W40)")
• Code First: W25 Contact with sharp glass ("injury due to flying glass from explosion or firearm discharge (W32-W40)")

Diagnosis Index entries for W40.9

• Explosion (accidental) (of) (with secondary fire)
• Explosion (accidental) (of) (with secondary fire) › explosive (material)
• Explosion (accidental) (of) (with secondary fire) › stove
• Poisoning (accidental) (by) › fumes or smoke due to › explosion

Nearby codes

• 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
• W40.8XXD Explosion of other specified explosive materials, subsequent encounter
• W40.8XXS Explosion of other specified explosive materials, sequela
• W40.9 Explosion of unspecified explosive materials (this code)
• W40.9XXA Explosion of unspecified explosive materials, initial encounter
• W40.9XXD Explosion of unspecified explosive materials, subsequent encounter
• W40.9XXS Explosion of unspecified explosive materials, sequela