| ICASO | International Committee of Acquired Immunodeficiency Syndrome Service Organisations |
|---|---|
| ICF | immunodeficiency-centromeric instability-facial anomalies [syndrome]; indirect centrifugal flotation... |
| ID | identification; iditol dehydrogenase; immunodeficiency; immunodiffusion; immunoglobulin deficiency; ... |
| IDAV | immunodeficiency-associated virus |
| IMD | immunodeficiency; immunologically mediated disease; institution for mentally disabled |