W40.9⚠ Requires 7th Character

Explosion of unspecified explosive materials

⚠ 7th Character Required

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

This code is not valid for billing without a 7th character. Append one of the following to W40.9:

Ainitial encounterW40.9XXADsubsequent encounterW40.9XXDSsequelaW40.9XXS

Sub-codes of W40.9(3)

W40.9 is a non-billable header. Select a sub-code to bill.

W40.9AExplosion of unspecified explosive materials, initial encoun…✓ BillableW40.9DExplosion of unspecified explosive materials, subsequent enc…✓ BillableW40.9SExplosion of unspecified explosive materials, sequela✓ Billable

Inclusion Terms

Also Indexed As(ICD-10-CM Alphabetic Index)

These clinical terms, synonyms, and manifestations all map to W40.9 in the official ICD-10-CM Alphabetic Index.

Explosion (accidental) (of) (with secondary fire)Explosion (accidental) (of) (with secondary fire), explosive (material)Explosion (accidental) (of) (with secondary fire), stovePoisoning (accidental) (by), fumes or smoke due to, explosion

Code Hierarchy

┌20External causes of morbidity (V00-Y99)├W20-W49Exposure to inanimate mechanical forces (W20-W49)├W40Explosion of other materials
└W40.9Explosion of unspecified explosive materials

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