ICD-10-CM > S00-T88 > S00-S09 > S00 > S00.9 > S00.90 S00.90 Unspecified superficial injury of unspecified part of head Non-Billable/Non-Specific Codes S00.90XA..., initial encounterS00.90XD..., subsequent encounterS00.90XS..., sequela