| IABM | idiopathic aplastic bone marrow |
|---|---|
| IACI | idiopathic arterial calcification of infancy |
| IAF | idiopathic alveolar fibrosis |
| IAH | idiopathic adrenal hyperplasia; implantable artificial heart |
| IAHA | idiopathic autoimmune hemolytic anemia; immune adherence hemagglutination |