ICD-10-CM > V00-Y99 > Y35-Y38 > Y36 > Y36.A > Y36.A1 Y36.A1 Low level blast overpressure in war operations Non-Billable/Non-Specific Applicable To LLB overpressure in war operationsLow level blast overpressure due to explosion in war operations Codes Y36.A1XA..., initial encounterY36.A1XD..., subsequent encounterY36.A1XS..., sequela