ICD-10-CM > V00-Y99 > Y35-Y38 > Y37 > Y37.6 > Y37.6X > Y37.6X1 Y37.6X1 Military operations involving biological weapons, civilian Non-Billable/Non-Specific Codes Y37.6X1A..., initial encounterY37.6X1D..., subsequent encounterY37.6X1S..., sequela