ICD-10-CM > V00-Y99 > Y35-Y38 > Y37 > Y37.4 > Y37.49 Y37.49 Military operations involving other forms of conventional warfare Non-Billable/Non-Specific Codes Y37.490Military operations involving other forms of conventional warfare, military personnelY37.490A..., initial encounterY37.490D..., subsequent encounterY37.490S..., sequelaY37.491Military operations involving other forms of conventional warfare, civilianY37.491A..., initial encounterY37.491D..., subsequent encounterY37.491S..., sequela