| ACOI | American College of Osteopathic Internists |
|---|---|
| ACOM | American College of Occupational Medicine; anterior communicating [artery] |
| ACOMS | American College of Oral and Maxillofacial Surgeons |
| ACOOG | American College of Osteopathic Obstetricians and Gynecologists |
| ACOP | American College of Osteopathic Pediatricians; approved code of practice |