ICD-10-CM > V00-Y99 > X92-Y09 > Y07 > Y07.4 > Y07.42 Y07.42 Foster parent, perpetrator of maltreatment and neglect Non-Billable/Non-Specific Codes Y07.420Foster father, perpetrator of maltreatment and neglectY07.421Foster mother, perpetrator of maltreatment and neglect