ICD-10-CM > S00-T88 > S20-S29 > S27 > S27.3 > S27.31 S27.31 Primary blast injury of lung Non-Billable/Non-Specific Applicable To Blast injury of lung NOS Codes S27.311Primary blast injury of lung, unilateralS27.311A..., initial encounterS27.311D..., subsequent encounterS27.311S..., sequelaS27.312Primary blast injury of lung, bilateralS27.312A..., initial encounterS27.312D..., subsequent encounterS27.312S..., sequelaS27.319Primary blast injury of lung, unspecifiedS27.319A..., initial encounterS27.319D..., subsequent encounterS27.319S..., sequela