| ATC Codes | Pharmacological Classification | Pharmacological Classification/DDD |
|---|---|---|
| G | GENITO URINARY SYSTEM AND SEX HORMONES | 生殖泌尿系统和性激素 |
| G03 | SEX HORMONES AND MODULATORS OF THE GENITAL SYSTEM | 性激素和生殖系统调节药 |
| G03C | ESTROGENS | 雌激素类 |
| G03CA | Natural and semisynthetic estrogens, plain | 天然和半合成的雌激素类，单方 |
| G03CB | Synthetic estrogens, plain | 合成雌激素类，单方 |
| G03CC | Estrogens, combinations with other drugs | 雌激素类，与其它药物复方 |
| G03CX | Other estrogens | 其它雌激素 |