| IHIS | integrated hospital information system |
|---|---|
| IHS | idiopathic hypereosinophilic syndrome; inactivated horse serum; Indian Health Service; integrated he... |
| ILSS | integrated life support system; intraluminal somatostatin |
| IMS | incurred in military service; Indian Medical Service; industrial methylated spirit; information mana... |
| IOD | injured on duty; integrated optical density; interorbital distance |