Explosion of other materials

**Excludes1:** - 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:** - A: initial encounter - D: subsequent encounter - S: sequela