atc code l02 atc code l02 atc code l02 endocrine therapy is a therapeutic subgroup of the anatomical therapeutic chemical classification system, a system of alphanumeric codes developed by the world health organization (who) for the classification of drugs and other medical products. subgroup l02 is part of the anatomical group l antineoplastic and immunomodulating agents. atc codes l antineoplastic and immunomodulating agents l01 antineoplastic agents l02 endocrine therapy l03 immunostimulants l04 immunosuppressants a b c d g h qi j l m n p r s v codes for veterinary use (atcvet codes) can be created by placing the letter q in front of the human atc code: for example, ql02. national issues of the atc classification may include additional codes not present in this list, which follows the who version. l02a hormones and related agents l02aa estrogens l02aa01 diethylstilbestrol l02aa02 polyestradiol phosphate l02aa03 ethinylestradiol l02aa04 fosfestrol l02ab progestogens l02ab01 megestrol l02ab02 medroxyprogesterone l02ab03 gestonorone l02ae gonadotropin-releasing hormone analogues l02ae01 buserelin l02ae02 leuprorelin l02ae03 goserelin l02ae04 triptorelin l02ae05 histrelin l02ae51 leuprorelin and bicalutamide l02b hormone antagonists and related agents l02ba anti-estrogens l02ba01 tamoxifen l02ba02 toremifene l02ba03 fulvestrant l02bb anti-androgens l02bb01 flutamide l02bb02 nilutamide l02bb03 bicalutamide l02bb04 enzalutamide l02bb05 apalutamide l02bb06 darolutamide l02bg aromatase inhibitors l02bg01 aminogluthetimide l02bg02 formestane l02bg03 anastrozole l02bg04 letrozole l02bg05 vorozole l02bg06 exemestane l02bx other hormone antagonists and related agents l02bx01 abarelix l02bx02 degarelix l02bx03 abiraterone l02bx04 relugolix