ICD-10-CM > S00-T88 > S20-S29 > S21 > S21.1 > S21.15 > S21.151 S21.151 Open bite of right front wall of thorax without penetration into thoracic cavity Non-Billable/Non-Specific Codes S21.151A..., initial encounterS21.151D..., subsequent encounterS21.151S..., sequela