ICD-10-CM > S00-T88 > S20-S29 > S27 > S27.5 > S27.51 S27.51 Primary blast injury of thoracic trachea Non-Billable/Non-Specific Applicable To Blast injury of thoracic trachea NOS Codes S27.51XA..., initial encounterS27.51XD..., subsequent encounterS27.51XS..., sequela