ICD-10-CM > S00-T88 > S20-S29 > S27 > S27.4 > S27.40 > S27.409 S27.409 Unspecified injury of bronchus, unspecified Non-Billable/Non-Specific Codes S27.409A..., initial encounterS27.409D..., subsequent encounterS27.409S..., sequela