ICD-10-CM > S00-T88 > S20-S29 > S21 > S21.9 > S21.94 S21.94 Puncture wound with foreign body of unspecified part of thorax Non-Billable/Non-Specific Codes S21.94XA..., initial encounterS21.94XD..., subsequent encounterS21.94XS..., sequela