| Abbreviation | Definition |
|---|---|
| HVOD | Hepatic Veno-Occlusive Disease |
| HWSD | Hoof Wall Separation Disease |
| IACD | Institute of Ageing and Chronic Disease |
| IAD | Inflammatory Airway Disease |
| IADC | Indiana Alzheimer Disease Center |
| IAPA | Influenza Associated Pulmonary Aspergillosis |
| IAV | Influenza A Viruses |
| IBD | Inflamatory Bowel Disease |
| IBD | Inflammatory Bowel Diseases |
| IBDC | Inclusion Body Disease Of Cranes |
| IBDF | Inclusion body disease of falcons |
| ICD11 | International Statistical Classification of Diseases 11 |
| ICDP | Indigenous Chronic Disease Package |
| ICDS | International Coeliac Disease Symposium |
| ICGID | International Conference on Geriatric Infectious Diseases |
| ICID | International Centre For Infectious Diseases |
| ICSOL | Intra-Cranial Space Occupying Lesion |
| ICUD | International Consultation on Urologic Diseases |
| ICUD | International Consultation on Urological Disease |
| IDAC | Infectious Disease Association of California |