ICD-10-CM > V00-Y99 > Y35-Y38 > Y36 > Y36.A Y36.A Blast overpressure in war operations Non-Billable/Non-Specific Code Also type of explosive, if knownaccidental detonation of onboard munitions (Y36.140)explosion of grenade (Y36.290)explosion of torpedo (Y36.040)improvised explosive device (Y36.230) Codes Y36.A1Low level blast overpressure in war operationsY36.A1XA..., initial encounterY36.A1XD..., subsequent encounterY36.A1XS..., sequelaY36.A2High level blast overpressure in war operationsY36.A2XA..., initial encounterY36.A2XD..., subsequent encounterY36.A2XS..., sequela