| Abbreviation | Definition |
|---|---|
| IHS | Intermediate Health Status |
| IHSS | Idiopathic Hypertrophic Subaortic Stenosis |
| IID | Insulin Dependent Diabetes |
| IIEF | International Index of Erectile Function |
| IJ | Internal Jugular |
| IJD | Indian Journal of Dermatology |
| IJD | International Journal of Dermatology |
| IJV | Internal Jugular Vein |
| IJWD | I Just Wanna Die |
| IL | Ilio-Lumbar |
| IL | Interleukin |
| ILD | Interstitial Lung Disease |
| ILFB | Injury and Intralenticular Foreign Body |
| ILI | Influenza Like Illness |
| ILL | Illness |
| ILN | inter-locking nail |
| ILTD | Inhibitory Long Term Depression |
| ILTD | Interneuron Long Term Depression |
| IM | Index Movement |
| IM | Infectious Mononucleosis |