| ABMM | American Board of Medical Management |
|---|---|
| ABMS | American Board of Medical Specialties |
| ABMT | American Board of Medical Toxicology; autologous bone marrow transplantation |
| ABO | abortion; absent bed occupancy; American Board of Orthodontists; blood group system consisting of gr... |
| ABOHN | American Board for Occupational Health Nurses |