ICD-10-CM > Z00-Z99 > Z40-Z53 > Z52 > Z52.8 > Z52.81 Z52.81 Egg (Oocyte) donor Non-Billable/Non-Specific Codes Z52.810Egg (Oocyte) donor under age 35, anonymous recipientZ52.811Egg (Oocyte) donor under age 35, designated recipientZ52.812Egg (Oocyte) donor age 35 and over, anonymous recipientZ52.813Egg (Oocyte) donor age 35 and over, designated recipientZ52.819Egg (Oocyte) donor, unspecified