ICD-10-CM > V00-Y99 > Y35-Y38 > Y36 > Y36.4 > Y36.49 Y36.49 War operations involving other forms of conventional warfare Non-Billable/Non-Specific Codes Y36.490War operations involving other forms of conventional warfare, military personnelY36.490A..., initial encounterY36.490D..., subsequent encounterY36.490S..., sequelaY36.491War operations involving other forms of conventional warfare, civilianY36.491A..., initial encounterY36.491D..., subsequent encounterY36.491S..., sequela