ICD-10-CM > S00-T88 > S00-S09 > S00 > S00.5 > S00.53 S00.53 Contusion of lip and oral cavity Non-Billable/Non-Specific Codes S00.531Contusion of lipS00.531A..., initial encounterS00.531D..., subsequent encounterS00.531S..., sequelaS00.532Contusion of oral cavityS00.532A..., initial encounterS00.532D..., subsequent encounterS00.532S..., sequela