ICD-10-CM > S00-T88 > S20-S29 > S20 > S20.3 > S20.31 > S20.319 S20.319 Abrasion of unspecified front wall of thorax Non-Billable/Non-Specific Codes S20.319A..., initial encounterS20.319D..., subsequent encounterS20.319S..., sequela