| IMAI | internal mammary artery implant |
|---|---|
| IMB | intermenstrual bleeding |
| IMBC | indirect maximum breathing capacity |
| IMBI | Institute of Medical and Biological Illustrators |
| IMC | indigent medical care; information-memory-concentration [test]; interdigestive migrating contractions; International Medical Corps; intestinal mast cell |
| IMCT | Information-Memory-Concentration Test |
| IMCU | intermediate medical care unit |
| IMD | immunodeficiency; immunologically mediated disease; institution for mentally disabled |
| ImD50 | immunizing dose sufficient to protect 50% of the animals in a test group |
| IMDC | intramedullary metatarsal decompression |