| wdt_ID | Name | Description | Fullname |
|---|---|---|---|
| 1 | A | Alimentary tract and metabolism | A Alimentary tract and metabolism |
| 2 | B | Blood and blood forming organs | B Blood and blood forming organs |
| 3 | C | Cardiovascular system | C Cardiovascular system |
| 4 | D | Dermatologicals | D Dermatologicals |
| 5 | G | Genito urinary system and sex hormones | G Genito urinary system and sex hormones |
| 6 | J | Antiinfectives for systemic use | J Antiinfectives for systemic use |
| 7 | M | Musculo-skeletal system | M Musculo-skeletal system |
| 9 | P | Antiparasitic products, insecticides and repellents | P Antiparasitic products, insecticides and repellents |
| 10 | R | Respiratory system | R Respiratory system |
| 11 | S | Sensory organs | S Sensory organs |
Level 2
| Parent | wdt_ID | Name | Description | Fullname |
|---|---|---|---|---|
| A | 1 | A01 | Stomatological preparations | A01 Stomatological preparations |
| A | 2 | A02 | Drugs for acid related disorders | A02 Drugs for acid related disorders |
| A | 3 | A03 | Drugs for functional gastrointestinal disorders | A03 Drugs for functional gastrointestinal disorders |
| A | 4 | A04 | Antiemetics and antinauseants | A04 Antiemetics and antinauseants |
| A | 5 | A05 | Bile and liver therapy | A05 Bile and liver therapy |
| A | 6 | A06 | Laxatives | A06 Laxatives |
| A | 7 | A07 | Antidiarrheals, intestinal antiinflammatory/antiinfective agents | A07 Antidiarrheals, intestinal antiinflammatory/antiinfective agents |
| A | 8 | A08 | Antiobesity preparations | A08 Antiobesity preparations |
| A | 9 | A10 | Drugs used in diabetes | A10 Drugs used in diabetes |
| A | 10 | A11 | Vitamins | A11 Vitamins |