| Abbreviation | Definition |
|---|---|
| ANCB | American Naturopathic Certification Board |
| ANCC | American Nurses Credentialing Center |
| AND | Allow Natural Death |
| ANMC | Alaska Native Medical Center |
| ANRP | Arkansas Nursing Reinvestment Program |
| AO | Access Orlando |
| AOB | Assignment Of Benefits |
| AOBT | Any Old Bloody Thing |
| AOD | Alcohol and Other Drug problems |
| AODD | Alcoholism and Other Drug Dependencies |
| AOH | Arnot Ogden Hospital |
| AOIC | Alaska Open Imaging Center |
| AOPC | Assessment Of Professional Competence |
| AOT | Assisted Outpatient Treatment |
| APACHE | Acute Physiology And Chronic Health Evaluation |
| APAP | Association of Physician Assistant Programs |
| APBC | Ambulance Paramedics of British Columbia |
| APC | Ambulatory Payment Classification |
| APC | Argon Plasma Coagulation |
| APG | Ambulatory Patient Group |