ICD-10-CM > S00-T88 > S20-S29 > S20 > S20.4 > S20.45 > S20.452 S20.452 Superficial foreign body of left back wall of thorax Non-Billable/Non-Specific Codes S20.452A..., initial encounterS20.452D..., subsequent encounterS20.452S..., sequela