ICD-10-CM > S00-T88 > S00-S09 > S01 > S01.5 > S01.50 S01.50 Unspecified open wound of lip and oral cavity Non-Billable/Non-Specific Codes S01.501Unspecified open wound of lipS01.501A..., initial encounterS01.501D..., subsequent encounterS01.501S..., sequelaS01.502Unspecified open wound of oral cavityS01.502A..., initial encounterS01.502D..., subsequent encounterS01.502S..., sequela