ICD-10-CM > S00-T88 > S30-S39 > S31 > S31.4 > S31.45 S31.45 Open bite of vagina and vulva Non-Billable/Non-Specific Applicable To Bite of vagina and vulva NOS Type 1 Excludes superficial bite of vagina and vulva (S30.864, S30.874) Codes S31.45XA..., initial encounterS31.45XD..., subsequent encounterS31.45XS..., sequela