ICD-10-CM > S00-T88 > S30-S39 > S36 > S36.4 > S36.41 S36.41 Primary blast injury of small intestine Non-Billable/Non-Specific Applicable To Blast injury of small intestine NOS Codes S36.410Primary blast injury of duodenumS36.410A..., initial encounterS36.410D..., subsequent encounterS36.410S..., sequelaS36.418Primary blast injury of other part of small intestineS36.418A..., initial encounterS36.418D..., subsequent encounterS36.418S..., sequelaS36.419Primary blast injury of unspecified part of small intestineS36.419A..., initial encounterS36.419D..., subsequent encounterS36.419S..., sequela