ICD-10-CM > S00-T88 > S20-S29 > S20 > S20.3 > S20.30 > S20.303 S20.303 Unspecified superficial injuries of bilateral front wall of thorax Non-Billable/Non-Specific Codes S20.303A..., initial encounterS20.303D..., subsequent encounterS20.303S..., sequela