ICD-10-CM > V00-Y99 > Y35-Y38 > Y37 > Y37.6 Y37.6 Military operations involving biological weapons Non-Billable/Non-Specific Codes Y37.6XMilitary operations involving biological weaponsY37.6X0Military operations involving biological weapons, military personnelY37.6X0A..., initial encounterY37.6X0D..., subsequent encounterY37.6X0S..., sequelaY37.6X1Military operations involving biological weapons, civilianY37.6X1A..., initial encounterY37.6X1D..., subsequent encounterY37.6X1S..., sequela