| ACKD | acquired cystic kidney disease |
|---|---|
| ACU | acquired cold urticaria; acute care unit; agar colony-forming unit; ambulatory care unit |
| AFS | acquired or adult Fanconi syndrome; alternative financing system; American Fertility Society; antifi... |
| AHA | acetohydroxamic acid; acquired hemolytic anemia; acute hemolytic anemia; American Heart Association;... |
| AHCD | acquired hepatocellular degeneration |