ICD-10-CM > V00-Y99 > Y35-Y38 > Y36 > Y36.6 > Y36.6X > Y36.6X0 Y36.6X0 War operations involving biological weapons, military personnel Non-Billable/Non-Specific Codes Y36.6X0A..., initial encounterY36.6X0D..., subsequent encounterY36.6X0S..., sequela