| A QUAD | Atrial quadrigeminy |
| A&C | Alert and cooperative |
| A&D | Admission and discharge |
| A&D | Alcohol and drug |
| A&D | Ascending and descending |
| A&H | Accident and health (insurance) |
| A&I | Allergy and Immunology |
| A&O x 3 | Awake and oriented to person, place and time |
| A&O x 4 | Awake and oriented to person, place, time and object |
| A&P | Active and present |
| A&P | Anterior and posterior |
| A&W | Alive and well |
| a.c. | before meals |
| a.k.a. | Also known as |
| A/C | anterior chamber of the eye |
| A/CK | Accuchek |
| A/G | Albumin to globulin ratio |
| A/O | Alert and oriented |
| A/U | at umbilicus |
| A/W | Able to work |
| a1-AGP | Alpha1-acid glycoprotein |
| AABH | Ativan, Benadryl, and Haldol |
| AACAT | Acyl CoA (Coenzyme A): Acetyltransferase |
| AADCA | Autosomal dominant cerebellar ataxia |
| AAFE | Aminiotic fluid embolization |
| AAHA | Acetohydroxamic acid |
| AAHJ | Artifical hip joint |
| AAILD | Angioimmunoblastic lymphadenopathy with dysproteinemia |
| AALT | Alanine aminotransferase |
| AAMP | Adenosine monophosphate |
| AANH | Acute normovolemic hemodilution |
| AANPR | Advanced notice of proposed rule making |
| AANT | Anterior |
| ABG | Arterial Blood Gas |
| ABG | Artery Bypass Graft |
| ABI | Acquired Brain Injury |
| ABI | Ankle/Brachial Index |
| ABID | Antibody Identification |
| ABK | Aphakic Bullous Keratopathy |
| ABL | Above Baseline |
| ABL | Abetalipoproteinemia (Bassen-Kornzweig syndrome) |
| ABLB | Alternate Binaural Loudness Balance |
| ABLC | Amphotericin B lipid complex |
| ABLV | Abelson Murine Leukemia Virus (virology)Australian Bat Lyssa Virus |
| ABMS | American Board of Medical Specialties |
| ABMS | Acute Bacterial Maxillary Sinusitis |
| ABMS | Automated Blood Management System |
| ABMT | Autologous bone marrow transplantation |
| ABN | Abnormality |
| ABO | American Board of Ophthalmology |
| ABO | Absent Bed Occupancy |
| ABP | Ambulatory blood pressure |
| ABPA | Allergic Bronchopulmonary Aspergillosis |
| ABPA | Aspergilliosis, Broncho-Pulmonary Allergy |
| ABPB | Amylase Binding Protein B |
| ABPB | Androgen Binding Protein Beta |
| ABPB | Axillary Brachial Plexus Block |
| ABPI | Association of the British Pharmaceutical Industry |
| ABPI | Ankle Brachial Pressure Index |
| ABPI | Ankle Systolic Blood Pressure Index |
| ABPM | Axillary brachial plexus block |
| ABPM | Allergic bronchopulmonary mycosis |
| ABR | Absolute bed rest |
| ABRS | Acute bacterial rhinosinusitis |
| ABS | Absent |
| ABSS | Anderson Behavioral State Scale |
| ABSS | American Board of Spine Surgery |
| ABT | About |
| ABT | Antibiotic Therapy |
| ABT | Aminopyrine breath test |
| ABVD | Doxorubicin (Adriamycin) , bleomycin, vinblastine, and dacabazine (DTIC) |
| ABW | Actual body weight |
| ABx | Antibiotics |
| AC | Abdominal circumference |
| AC&HS | Before meals and at bedtime |
| AC/A | accommodation convergence- accommodation |
| ACA | Acrodermatitis chronica atrophicans |
| ACABS | Acute community-acquired bacterial sinusitis |
| ACAD | Anterior circulation arterial dissection |
| ACAS | Acute community-acquired sinusitis |
| ACB | Alveolar-capillary block |
| AcB | Assist with bath |
| ACBE | Air Contrast Barium Enema |
| ACBG | Aortocoronary bypass graft |
| ACBT | Active Cycle of Breathing Technique (physiotherapy) |
| ACC | Acalculous cholecystitis |
| ACCE | Academic Clinical Coordinator Educator |
| ACC-NCDR | American College of Cardiology- National Cardiovascular Data Registry |
| AcCoA | acetyl-coenzyme A |
| ACCP | American College of Chest Physicians |
| ACCR | Amylase creatinine clearance ratio |
| ACCU | Acute coronary care unit |
| ACD | Acid-Citrate-Dextrose |
| ACD | Anemia of Chronic Disease |
| ACD | Anti-Cancer Drug |
| ACD | Absolute cardiac dullness |
| ACDC | Adipocyte, C1q, and Collagen Domain Containing (Protein) |
| ACDC | Antibody complement-dependent cytolysisSlang for bisexuality |
| ACDDS | Alcoholism/Chemical Dependence Detoxification Service |
| ACDF | Anterior Cervical Discectomy and Fusion (surgery) |
| ACDFs | adult children from dysfunctional families |
| ACDK | Acquired Cystic Disease of the Kidney |
| ACDS | Anticonvulsant drugs |
| ACDS | Anti-Cancer Drugs |
| ACE | Angiotensin-converting enzyme |
| ACE | Adrenocortical extract |
| ACEI | Angiotensin-converting enzyme inhibitor |
| ACF | Aberrant crypt focus |
| ACG | American College of Gastroenterology |
| ACG | Accelerography |
| ACGME | Accreditation Council for Graduate Medical Education |
| ACh | Acetylcholine |
| ACHA | Air-conduction hearing aid |
| AChE | Acetylcholinestearase |
| AChEIs | Acetylcholinesterase inhibitors |
| ACHES | Abdominal pain, Chest pain, Headaches, Eye problems, Sweling and/or aching in the legs and thighs (mnemonic for side effects of the birth control pill) |
| ACI | Acceleration index |
| ACIOL | Anterior chamber intraocular lens |
| ACIP | Advisory Committe on Immunization Practices |
| ACIS | Automated cellular imaging system |
| ACJ | Acromioclavicular joint |
| ACL | Accessory collateral ligament |
| aCL | Anticardiolipin |
| ACLA | American Coalition of Life Activists |
| ACLF | Adult congregate living facility |
| ACLR | AAnterior cruciate ligament repair |
| ACLS | Advanced cardiac life support |
| ACM | alternative/complementary medicine |
| ACMT | American College of Medical Toxicology |
| ACMT | Adult Care Management Team |
| ACMT | Advanced combined modality therapy |
| ACMV | Air-Conditioning&Mechanical Ventilation |
| ACMV | Arterial Contrast-Medium Velocity |
| ACMV | Assist-controlled mechanical ventilation |
| ACN | Acoustic Neurinoma |
| ACN | Acetonitrile |
| ACN | Acute conditioned neurosis |
| ACNP | Acute Care Nurse Practitioner |
| ACO | Anterior capsular opacification |
| ACOA | Adult Children of Alcoholics |
| ACOA | Alternate Course Of Action |
| ACOG | American College of Obstetricians and Gynecologists |
| ACOS-OG | American College of Surgeons Oncology Group |
| ACP | Accessory conduction pathway |
| ACPA | Anti-cytoplasmic antibodies |
| AC-PC | Anterior commissure-posterior commissure line |
| AC-PH | Acid phosphatase |
| ACPO | Acute colonic pseudo-obstruction |
| ACPP | Adrenocorticopolypeptide |
| ACPP PF | Acid phosphatase prostatic fluid |
| ACPPDD | Average cost per patient day |
| ACPS | Anterior cervical plate stabilization |
| ACQ | Acquired |
| ACQ-5 | Asthma control questionnaire |
| ACR | American College of Radiology |
| ACR | American College of Rheumatology |
| ACR | Adenomatosis of the colon and rectum |
| ACR20 | American College of Rheumatology 20% improvement response criteria (rheumatoid arthritis) |
| ACRC | Advanced colorectal cancer |
| ACRD | Acquired cystic renal disease |
| ACRES | Amplification created restriction enzyme site |
| ACRN | AIDS-Certified Registered Nurse |
| ACS | Acute Coronary Syndrome |
| ACS | American Cancer Society |
| ACS | Anterior compartment syndrome |
| ACSF | Anterior cervical spine fixation |
| ACSL | Analytical Chemistry Services Laboratory |
| ACSL | Automatic computerized solvent litholysis |
| ACSM | American College for Sports Medicine |
| ACSVBG | Aortocoronary saphenous vein bypass graft |
| ACSW | Academy of Certified Social Workers |
| ACT | Activated clotting time |
| ACT-D | Dactinomycin |
| ACTG | AIDS Clinical Trial Group |
| ACTH | corticotropin (adrenocorticotropic hormone) |
| ACT-Post | Activated clotting time post-filter |
| ACT-Pre | Activated clotting time pre-filter |
| ACTSEB | Anterior chamber tube shunt encircling band |
| ACU | Ambulatory care unit |
| ACUP | Adenocarcinoma of unknown primary (origin) |
| ACV | Acyclovir |
| A-C-V | A wave, C wave, and V wave |
| ACVBP | Doxorubicin (Adriamycin), cyclophosphamide, vindesine, bleomycin, and prednisone |
| ACVD | Acute cardiovascular disease |
| ACVP | Doxorubicin (Adriamycin), cyclophosphamide, vincristine, and prednisone |
| ACW | Anterior chest wall |
| acyl-CoA | Acyl coenzyme A |
| AD | Accident dispensary |
| AD | Admitting diagnosis |
| AD | Advance directive |
| AD | Alternating days |
| AD | Alzheimer disease |
| AD | Androgen deprivation |
| AD | Antidepressant |
| AD | Assistive device |
| AD | Atopic dermatitis |
| ad lib | As desired |
| ad lib | At liberty |
| ADA | Adenosine deaminase |
| ADA | American Dental Association |
| ADA | American Diabetes Association |
| ADAM | Adjustment disorder with anxious mood |
| ADAS | Alzheimer Disease Assessment Scale |
| ADAS-COG | Alzheimer Disease Assessment Scale-Cognitive Subscale |
| ADAT | Advance diet as tolerated |
| ADAU | Adolescent drug abuse unit |
| ADB | Amorous disinhibited behavior |
| ADC | Aid to Dependent Children |
| ADC | Anxiety disorder clinic |
| ADC | Admit, Diagnosis, Condition |
| ADCC | Antibody-dependent cellular cytotoxicity |
| ADD | Adduction |
| ADD | Arrest in dilation/descent |
| ADD | Attention-deficit disorder |
| ADDH | Attention-deficit disorder with hyperactivity |
| ADDL | Additional |
| ADDLS | Amyloid-derived diffusible ligands |
| ADDM | Adjustment disorder with depressed mood |
| ADDP | Adductor pollicis |
| ADDU | Alcohol and drug dependence unit |
| ADE | Acute disseminated encephalitis |
| ADEM | Acute disseminating encephalomyelitis |
| ADEPT | Antibody-directed enzyme prodrug therapy |
| ADFT | Atrial defibrillation threshold |
| ADFU | Agar diffusion for fungus |
| ADG | Atrial diastolic gallop |
| ADH | Antidiuretic hormone |
| ADHD | Attention-deficit hyperactivity disorder |
| ADHF | Acute decompensated heart failure |
| ADI | Acceptable daily intake |
| ADI | Acute diaphragmatic injury |
| ADJ | Adjusted |
| Adj D/O | adjustment disorder |
| ADL | Activities of daily living |
| ADLG | Average duration of life gained |
| ADM | Admission |
| ADM | Acceptance of disability modified |
| ADMA | Asymmetrical dimethyl arginine |
| ADME | Absorption, distribution, metabolism, and excretion |
| ADO | Adenosine |
| ADO | Adult Dyslexia Organisation |
| ADO | Axiodistoocclusal |
| ADOA | Autosomal-dominant optic atrophy |
| ADOL | Adolescent |
| ADON | Assistant Director of Nursing |
| ADP | Adaptive |
| ADP | Adenosine diphosphate |
| ADP | Arterial demand pacing |
| ADPC | Area Under Disease Progress Curve |
| ADPC | Active distance to palmar crease |
| ADPKD | Autosomal dominant polycystic kidney disease |
| ADPV | Anomoly of drainage of pulmonary vein |
| ADQ | Abductor digiti quinti |
| ADR | Acute dystonic reaction |
| ADR | Adverse drug reaction |
| ADRB2 | beta-2 adrenergic receptor |
| ADRD | Alzheimer disease and related disorders |
| ADRIA | Doxorubicin (Adriamycin) |
| ADRV | Adult diarrhea rotavirus |
| ADS | Admission day surgery |
| ADS | Anatomical dead space |
| ADs | Advanced directives |
| AdSD | Adductor spasmodic dysphonia |
| ADSU | Ambulatory diagnostic surgery unit |
| ADT | Admission, discharge, and transfer |
| ADTP | Adolescent Day Treatment Program |
| ADTR | Academy of Dance Therapists, Registered |
| ADU | Automated dispensing unit |
| ADV | Adenovirus vaccine, not otherwise specified |
| ADV | Advance/Advanced |
| ADV4 | Adenovirus vaccine, type 4, live, oral |
| ADV7 | Adenovirus vaccine, type 7, live, oral |
| ADX | Audiological diagonostic (testing) |
| AE | Above elbow |
| AE | Accident and emergency |
| AE | Acute exacerbation |
| AEA | Above-elbow amputation |
| AEB | As evidenced by |
| AEC | Absolute (blood) eosinophil count |
| AECB | Acute exacerbations of chronic bronchitis |
| AECG | Ambulatory electrocardiogram |
| AECOPD | Acute exacerbation of chronic obstructive pulmonarydisease |
| AED | Antiepileptic drug |
| AEDD | AAnterior extradural defects |
| AEDF | Absent end-diastolic flow |
| AEE | Asthma-exacerbation episodes |
| AEEU | Admission entrance and evaluation unit |
| AEFI | Adverse events following immunization |
| AEFP | Assisted end-diastolic pressure |
| AEG | Air encephalogram |
| AELBM | After each loose bowel movement |
| AEM | Active electrode monitor |
| AEM | Ambulatory electrogram monitor |
| AEP | Auditory evoked potential |
| AEQ | Age equivalent |
| AER | Acoustic evoked response |
| AERD | Aspirin-exacerbated respiratory disease |
| AERS | adverse event reporting system |
| AERS | Adverse event reports |
| AES | Adult emergency service |
| AEs | Adverse events |
| AET | Alternating esotropia |
| AF | acid-fast |
| AF | afebrile |
| AF | amniotic fluid |
| AF | anterior fontanel |
| AF | antifibrinogen |
| AF-AFI | Atrial fibrillation and atrial flutter |
| AFB | Acid-fast bacilli |
| AFB1 | Aflatoxin B1 |
| AFBG | Aorto-femoral bypass (graft) |
| AFBY | Aortofemoral bypass (graft) |
| AFC | Adult foster care |
| AFC | Air filled cushions |
| AFDC | Aid to Families with Dependent Children |
| AFEB | Afebrile |
| AFEU | Ante partum fetal evaluation unit |
| AFGF | Acidic fibroblast growth factor |
| AFH | Adult family home |
| AFI | Acute febrile illness |
| AFIB | Atrial fibrillation |
| AFIP | Armed Forces Institute of Pathology |
| AFKO | Ankle-foot-knee orthosis |
| AFL | Atrial Flutter |
| AFL | Alcoholic Fatty Liver |
| AFLP | Acute fatty liver of pregnancy |
| AFM | Active fetal movement |
| AFM | Aerosol face mask |
| AFO | Ankle-fixation orthotic |
| AFOF | Anterior fontanel and open and flat |
| AFP | Acute flaccid paralysis |
| AFRD | Acute febrile respiratory disease |
| AFRS | Allergic fungal rhinosinusitis |
| AFS | Allergic fungal sinusitis |
| AFTN | Autonomously functioning thyroid nodule |
| AFV | Amniotic fluid volume |
| AFVSS | Afebrile, vital signs stable |
| AFX | Air-fluid exchange |
| AFX | Atypical fibroxanthoma |
| AG | Abdominal girth |
| AG | Adrenogenital |
| AG | Amsler grid |
| AG | Aminoglycoside |
| AG | Anion gap |
| AG | Antigen |
| Ag | silver |
| AG/BL | Aminoglycoside/beta-lactam |
| AGA | Accelerated growth ratio |
| AGAS | Accelerated graft atherosclerosis |
| AGC | Absolute granulocyte count |
| AGCUS | Atypical glandular cells of undetermined significance |
| AGD | Agar gel diffusion |
| AGE | Acute gastroentertitis |
| AGECAT | Automatic geriatric examination for computer-assistedtaxonomy |
| AGF | Angle of greatest flexion |
| AGG | Agammaglobulinemia |
| aggl. | Agglutination |
| AGHD | Adult hormone growth deficiency |
| AGI | Alpha-glucosidase inhibitor |
| AGIB | Acute gastrointestinal bleeding |
| AGL | Acute granulocytic leukemia |
| AGN | Acute glomerulonephritis |
| AGNB | Aerobic gram-negative bacilli |
| AgNO3 | silver nitrate |
| AGPT | Agar-gel precipitation test |
| AGS | Adrenogenital syndrome |
| AGT | alanine-glyoxylate amniotransferase |
| AGTT | Abnormal glucose tolerance test |
| AGU | Anhydroglucose Units |
| AGUS | Atypical glandular cells of uncertain significance |
| AGVHD | Acute graft-versus-host disease |
| AH | Abdominal hysterectomy |
| AHAs | Alpha hydroxy acids |
| AHase | Antihyaluronidase |
| AHBc | Hepatitis B core antibody |
| AHC | Acute hemorrhagic conjunctivitus |
| AHCA | Agency for Healthcare Administration |
| AHCA | American Healthcare Association |
| AHCPR | Agency for Health Care Policy and Research |
| AHCs | Academic health centers |
| AHD | Atherosclerotic Heart DiseaseAlveolar Hydatid Disease |
| AHE | Acute hemorrhagic encephalomyelitus |
| AHEC | Area Health Education Center |
| AHF | Antihemophilic factor |
| AHF-M | Antihemophilic factor (human), method M |
| AHFS | American Hospital Formulary Service |
| AHG | Antihemophilic globulin |
| AHGS | Acute herpetic gingival stomatitis |
| AHHD | Arteriosclerotic hypertensive heart disease |
| AHI | Apnea-hypopnea index |
| AHM | Ambulatory Holter monitoring |
| AHMO | Anterior horizontal mandibular osteotomy |
| AHN | Adenomatous hyperplastic nodule |
| AHO | Albright hereditary osteodystrophy |
| AHP | Acute hemorrhagic pancreatitis |
| AHR | Adjusted hazard ratios |
| AHRE | Atrial high-rate event |
| AHRF | Acute hypoxemic respiratory failure |
| AHS | Adaptive hand skills |
| AHSA | Assistant Health Services Administrator |
| AHSCT | Autologous hemopoietic stem-cell transplantation |
| AHSP | Alpha hemoglobin stabilizing protein |
| AHST | Autologous hematopoietic stem cell transplantation |
| AHT | Alternating hypertropia |
| AHTG | Antihuman thymocyte globulin |
| AI | Accidentally incurred |
| AI | Accommodative insufficiency |
| AIA | Accommodation Independence Assessment |
| AI-Ab | Anti-insulin antibody |
| AIBF | Anterior interbody fusion |
| AIC | Amount in controversy |
| AICA | Anterior inferior cerebellar artery |
| AICBG | Anterior interbody cervical bone graft |
| AICD | Activation-induced cell death |
| AICM | Anti-inflammatory controller medication |
| AICS | Acute ischemic coronary syndromes |
| AID | Absolute iron deficiency Acquired Immune Deficiency |
| AIDH | Artificial insemination donor husband |
| AIDKS | Acquired immune deficiency syndrome with Kaposi sarcoma |
| AIDP | Acute inflammatory demyelinating polyradiculoneuropathy |
| AIDS | Acquired immunodeficiency syndrome |
| AIE | Acute inclusion body encephaltis |
| AIED | Autoimmune inner-ear Disease |
| AIEOP | Italian Association of Pediatric Hematology and Oncology |
| AIF | Aortic-iliac-femoral |
| AIGHL | Anterior band of the inferior glen humeral ligament |
| AIHA | Autoimmune hemolytic anemia |
| AIHD | Acquired immune hemolytic disease |
| AIIRs | Airborne infection isolation rooms |
| AIIS | Anterior inferior iliac spine |
| AILT | Angioimmunoblastic T-cell lymphoma |
| AIM | Anti-inflammatory medication |
| AIMS | Abnormal Involuntary Movenent Scales |
| AIN | Acute interstital nephritis |
| AINS | Anti-inflammatory non-steroidal |
| AIO | All-in-one |
| AIOD | Aorto-Iliac Occlusive Disease (aka Aorto-Iliac Obstructive Disease) |
| AION | Anterior ischemic optic neuropathy |
| AIP | Acute infectious polyneuritis |
| AIPC | Androgen-independent prostate cancer |
| AIR | Accelerated idioventricular rhythm |
| AIRE | Autoimmune regulator |
| AIRR | Acute infusion-related reaction |
| AIS | Abbreviated Injury Score |
| AIS | Acute ischemic stroke |
| AIS/ ISS | Abbreviated Injury Scale/Injury Severity Score |
| AISA | Acquired idiopathic sideroblastic anemia |
| AIT | Adoptive immunotherapy |
| AITD | Autoimmune thyroid disease |
| AITN | Acute interstitial tubular nephritis |
| AITP | Autoimmune thrombocytopenia purpura |
| AIU | Absolute iodine uptake |
| AIVC | Absence of the inferior vena cava |
| AIVR | Accelerated idioventricular rhythm |
| AJ | Ankle jerk |
| AJCC | American Joint Committee on Cancer |
| AJO | Apple juice only |
| AJR | Abnornal jugular reflex |
| AK | Above-knee |
| AKA | Above-knee amputation |
| AKI | Acute kidney injury |
| AKP | Anterior knee pain |
| AKS | Alcoholic Korsakoff syndrome |
| AKU | Artificial kidney unit |
| AL | Acute leukemia |
| Al | aluminum |
| Al(OH)3 | Aluminum hydroxide |
| ALA | American Lung Association |
| ALA | Alpha Lipoic Acid |
| ALA | Alpha-Linolenic Acid |
| ALA | Amoebic Liver Abscess |
| ALAC | Antibotic-loaded acrylic cement |
| ALAD | Abnormal left axis deviation |
| ALA-GLN | Alanyl-glutamine |
| ALARA | As low as reasonably achievable |
| ALAT | Alanine aminotransferase |
| ALAX | Apical long axis |
| ALB | albumin |
| ALC | AlcoholAcetyl-L-Carnitine |
| ALC R | Alcohol rub |
| ALCA | Anomalous left coronary artery |
| ALCL | Anaplastic large-cell lymphoma |
| ALD | Adrenoleukodystrophy |
| ALDH | Aldehyde dehydrogenase |
| ALDO | Aldosterone |
| ALF | Acute liver failure |
| ALFT | Abnormal liver function tests |
| ALG | Antilymphoblast globulin |
| ALGB | Adjustable laparoscopic gastric banding |
| ALH | Atypical lobular hyperplasia |
| ALIF | AAnterior lumbar interbody fusion |
| A-line | Arterial catheter |
| ALJ | Administrative law judge |
| ALK | Alkaline |
| ALK ISO | Alkaline phosphatase isoenzymes |
| ALK-P | Alkaline phosphatase |
| All-BMT | Allogeneic bone marrow transplantation |
| Allo-HCT | Allogenic hematopoietic cell transplant |
| allo-SCT | Allogeneic stem cell transplantation |
| ALM | Acral lentiginous melanoma |
| ALMI | Anterolateral myocardial infarction |
| ALN | Anterior lower back |
| ALND | Axillary lymph node dissection |
| ALNM | Axillary lymph node metastasis |
| ALO | AxiolinguoocclusalApraxia of eyelid opening |
| ALOC | Altered level of consciousness |
| ALOS | Average length of stay |
| ALP | Alkaline phosphatase |
| ALPS | Autoimmune lymphoproliferative syndrome |
| ALPSA | Anterior labroligamentous periosteal sleeve avulsion |
| ALPZ | Alprazolam (Xanax) |
| ALR | Adductor leg raise |
| ALRI | Acute lower-respiratory-tract infection |
| ALS | Acid-labile subunit |
| ALSG | Australian Leukemia Study Group |
| ALSOB | Alcohol-like substance on breath |
| ALTB | Acute laryngotracheobronchitis |
| ALTE | Acute life threatening event |
| ALTF | Anterolateral thigh flap |
| ALVAD | Abdominal Left Ventricular Assist Device |
| ALWMI | Anterolateral wall myocardial infarct |
| ALZ | Alzheimer disease |
| AM | Adult male |
| A-M pr | Austin-Moore prosthesis |
| AM/ADM | Morning admission |
| AM/CR | Amylase to creatinine ratio |
| AMA | Advanced maternal age |
| AMAC | Adults molested as children |
| AMAD | Activity median aerodynamic diameter |
| AMAD | Morning admission |
| AMAG | Adrenal medullary autograft |
| AMAL | Amalgam |
| AMAN | Acute motor axonal neuropathy |
| AMAP | American Medical Accreditation Program |
| Amask | Aerosol mask |
| AMAT | Anti-malignant antibody test |
| A-MAT | Amorphous material |
| AMAT S/E | Arm Motor Ability Test for shoulder/elbow |
| AMAT W/H | Arm Motor Ability Test for wrist/hand |
| AMB | Ambulate |
| AMBDs | AAutoimmune mucocutaneous blistering diseases |
| AMBER | Advanced multiple beam equalization radiography |
| AMBI | Acute multiple brain infarcts |
| AMC | Arm muscle circumference |
| AME | Agreed medical examination |
| AMegL | Acute megokaryoblastic leukemia |
| AMES-LAN | American sign language |
| AMF | Aerobic metabolism facilitator |
| AMG | Acoustic myography |
| AMGA | American Medical Group Association |
| AMI | Acute myocardial infarction |
| AMKL | Acute megakaryocytic leukemia |
| AML | Acute myelogenous leukemia |
| AMLOS | Arithmetic mean length of stay |
| AMLR | Auditory midlatency response |
| AMM | Agnogenic myeloid metaplasia |
| AMML | Acute myelomonocytuc leukemia |
| AMMOL | Acute myelomonoblastic leukemia |
| AMN | Adrenomyloneuropathy |
| AMN SC | Amniotic fluid scan |
| Amnio | Amniocentesis |
| AMNM | American Board of Nuclear Medicine |
| AMOL | Acute monoblastic leukemia |
| AMOVA | Analysis of molecular variance |
| AMPLE | Allergies, Medications, Past Medical History, Last Eaten, Events Leading |
| AMPPE | Acute multifocal placoid pigment epitheliopathy |
| AMPS | Assessment of Motor and Process Skills |
| AMPT | Metyrosine (alphamethylparatyrosine) |
| AMR | Acoustic muscle reflex |
| AMRI | Anterior medial rotary instability |
| AMS | Accelerator mass spectrometry |
| AMSAN | Acute motor sensory axonal neuropathy |
| AMSIT | Attitude, Mood, Sensory, Intellect, Thought |
| AMT | Abbreviated mental test |
| AMTS | Abbreviated Mental Test Score |
| AMU | Accessory-muscle use |
| AMY | Amylase |
| AMY/CR | AAmylase/creatinine ratio |
| AN | Acoustic neuromas |
| ANA | Antinuclear antibody |
| ANA | Anesthesia |
| ANA | American Neurological Association |
| ANA | Anticardiolipin Antibody |
| ANA | American Nurses Association |
| ANA SWAB | Anaerobic swab |
| ANAD | Anorexia nervosa and associated disorders |
| ANADA | Abbreviated New Animal Drug Application |
| ANAG | Acute narrow angle glaucoma |
| ANC | Absolute neutrophil count |
| ANDA | Abbreviated New Drug Application |
| ANES | Anesthesia |
| ANF | Antinuclear factor |
| ANG | Angiogram |
| ANISO | Anisocytosis |
| ANK | Ankle |
| ANL | Acceptable noise level |
| ANLL | Acute nonlymphoblastic leukemia |
| ANM | Assistant Nurse Manager |
| ANN | Annual |
| ANN | Annals |
| ANN | Aluminum Nitrate Nonhydrate |
| ANN | Artificial neural network |
| ANNA | Artificial neural network analysis |
| ANOVA | Analysis of variance |
| ANP | Adult Nurse Practitioner |
| ANS | Autonomic Nervous SystemAnswer |
| ANSI | American National Standards Institute |
| ANTA | Anthrax vaccine, absorbed before |
| ANTE | before |
| ANTI-GAD | Antibodies to glutamic acid decarboxylase |
| ANTI-HBc | Antibody to hepatitis B core antigen |
| ANTI-HBe | Antibody to hepatitis B e antigen |
| ANTI-HBs | Antibody to hepatitis B surface antigen |
| ANTI-Sm | Anti-Schistosoma mansoni (antibody) |
| ANTU | Alphanaphthyl Thiourea |
| ANUG | Acute necrotizing ulcerative gingivitis |
| ANV | Acute nausea and vomiting |
| ANX | Anxiety |
| AO | Abdominal obesity |
| AOA | Anaplastic oligoastrocytoma |
| AOAA | Aminooxoacetic acid |
| AOAP | As often as possible |
| AOAs | Adult offspring of alcoholics |
| AOB | Alcohol on breath |
| AOBC | Aortic occlusion ballon catheter |
| AOBS | Acute organic brain syndrome |
| AOC | Abridged ocular chart |
| AOCD | Anemia of chronic disease |
| AOCL | Anodal opening clonus |
| AOCN | Advanced Oncology Certified Nurse |
| AOD | Adult-onset diabetes |
| AODA | Alcohol and other drug abuse |
| AOFAS | American Orthapaedic Foot and Ankle Society |
| AOI | Apnea of infancy |
| AOIVM | Angiographically Occult Intracranial Vascular Malformation |
| AOL | Augmentation of labor |
| AOLC | Acridine-orange leukocyte cytospin |
| AOM | Acute otitis media |
| AOM | Active Oxygen Method |
| AONAD | Alert, oriented, and no acute distress |
| AOO | Anodal opening odor |
| AOR | Adjusted odds ratio |
| AORC | Arthritis and other rheumatic conditions |
| AORT REGURG | Aortic regurgitation |
| AORT STEN | Aortic stenosis |
| AOS | Ambulatory outpatient surgery |
| AOS | Apraxia of Speech |
| AOS | Antibiotic order sheet |
| AOSC | Acute obstructive suppurative cholangiotomy |
| AOSD | Adult-onset Still disease |
| AOTB | Alcohol on the breath |
| AP | Abdominal pain |
| AP | Abdominal perineal |
| AP | Acute pancreatitis |
| AP&L | Anteroposterior and lateral |
| AP&R | Apical and radial |
| APA | Aldosterone-producing adenoma |
| APAA | Anterior parietal artery aneurysm |
| APAC | Acute primary angle closure |
| APACHE | Acute Physiology and Chronic Health Evaluation |
| APAD | Anterior-posterior abdominal diameter |
| APAG | Antipseudomonal aminoglycosidic |
| APB | Abductor pollicis brevis |
| APBI | Accelerated partial breast irradiation |
| APBSCT | Autologous peripheral blood stem cell transplantation |
| APC | Absolute phagocyte count |
| APC | Activated protein C |
| APCD | Adult polycystic disease |
| APCE | Affinity probe capillary electrophoresis |
| APCIs | Atrial peptide clearance inhibitors |
| APCKD | Adult polycystic kidney disease |
| AP-CT | Abdominal and pelvic computer tomography |
| APD | Acid peptic disease |
| APDC | Anxiety and Panic Disorder Clinic |
| AP-DRGs | All-patient diagnosis-related groups |
| APDT | Acellular pertussis vaccine with diptheria and tetanus toxoids |
| APE | Absolute prediction error |
| APECED | Autoimmune polyendocrinopathy-candidiasis ectodermal dystrophy |
| APER | Abdominalperineal excision of the rectum |
| APG | Ambulatory patient group |
| Apgar | Appearance, pulse, grimace, activity, and respiration |
| APH | Adult psychiatric hospital |
| APhA | American Pharmacists Association |
| APHIS | Animal and Plant Health Inspection Service |
| API | Active pharmaceutical ingredients |
| APIS | Acute Pain Intensity Scale |
| APIVR | Artificial pacemaker-induced ventricular rhythm |
| APKD | Adult polycystic kidney disease |
| APL | Abductor pollicis longus |
| APLA | Antiphospholipid antibody |
| APLD | Automated percutaneous lumbar diskectomy |
| APLS | Antiphospholipid syndrome |
| APME | Acute postinfectious measles encephalitis |
| APMPPE | Acute posterior multifocal placoid pigment epitheliopathy |
| APMS | Acute pain management service |
| APN | Acquired pendular nystagmus |
| APO | Adverse patient occurrence |
| APOLT | Auxiliary partial orthotopic liver transplantation |
| APOPPS | Adjustable postoperative protective prosthetic socket |
| APP | Alternating pressure pad |
| APPG | Aqueous procaine penicillin G |
| APPLA | Another planned permanent living arrangement |
| appr. | Approximate |
| appt. | Appointment |
| APPY | Appendectomy |
| APR | Abdomino-perineal resection |
| APR-DRGs | All-patient refined diagnosis-related groups |
| APRT | Abdominopelvic radiotherapy |
| APRV | Airway pressure release ventilation |
| APS | Acute pain service |
| APS | American Pain Society |
| APSAC | Anistreplase (anisoylated plasminogen streptokinase activator complex) |
| APSD | Alzheimer presenile dementia |
| APSP | Assisted peak systolic pressure |
| APSS | Associated Professional Sleep Societies |
| aPTT | Activated partial thromboplastin time |
| APU | Ambulatory procedure unit |
| APUD | Amine precursor uptake and decarboxylation |
| APV | Amprenavir |
| APVC | Partial anomalous pulmonary venous connection |
| APVR | Aortic pulmonary valve replacement |
| APVT | Advance portal vein thrombosis |
| APW | Aortopulmonary window |
| aq | aqueous, water |
| AQ | Acoustic Quantification |
| AQ | anthraquinone |
| AQ | Aphasia Quotient |
| AQ | Accomplishment quotient |
| AQLQ-J | Asthma Quality of Life Questionnaire-Juniper |
| AQLQ-M | Asthma Quality of Life Questionnaire-Marks |
| AQOL | Acne quality of life |
| AR | Archilles reflex |
| AR | Acoustic reflex |
| AR | Active resistance |
| AR | Airway resistance |
| ARA | Adenosine Receptor Agonist |
| ARA | Action Research Arm |
| Ara | Arabinose |
| ara-C | cytarabine (Cytosar-U) |
| ARAD | Abnormal right axis deviation |
| ARB | Angiotensin II receptor blocker |
| ARBOR | Arthropod-borne virus |
| ARC | Abnormal retinal correspondence |
| ARC | Adult residential care |
| ARCBS | American Red Cross Blood Services |
| ARD | Acute respiratory disease |
| ARDMS | American Registry of Diagnostic MedicalSonographers |
| ARDS | Adult respiratory distress syndrome |
| ARE | Active-resistive exercises |
| ARF | Acute renal failure |
| ARF | Acute respiratory failure |
| ARFF | At risk for falling |
| ARG | Alkaline reflux gastritis |
| ARGNB | Antibiotic-resistant gram-negative bacilli |
| ARH | Autosomal recessive hypercholesterolemia |
| ARHL | Age-related hearing loss |
| ARHNC | Advanced resected head and neck cancer |
| ARI | Acute renal insufficiency |
| ARI | Acute respiratory infection |
| ARI | Acute respiratory illness |
| ARIF | Arthroscopic reduction and internal fixation |
| ARIMA | Autoregressive integrated moving average |
| ARJP | Autosomal recessive juvenile parkinsonism |
| ARL | Acceptable Risk Level |
| ARLD | Alcohol-related liver disease |
| ARMD | Age-related macular degeneration |
| ARMS | Alveolar rhabdomyosarcoma |
| ARN | Acute retinal necrosis |
| ARND | Alcohol-related neuro-developmental disorder |
| ARNP | Advanced Registered Nurse Practitioner |
| AROM | Active range of motion |
| ARP | Absolute refractory period |
| ARPE | Amylase-rich pleural effusion |
| ARPF | Anterior release posterior fusion |
| ARPKS | Autosomal recessive polycystic kidney disease |
| ARPN | Advanced Practice Registered Nurse |
| ARPT | Acid reflux provocation test |
| ARR | Absolute risk reduction |
| aRR | Adjusted rate ratio |
| ARROM | Active resistive range of motion |
| ARRT | American Registry of Radiologic Technologists |
| ARS | Acute radiation sickness |
| ART | Accredited Record Technician |
| ARTIC | Articulation |
| ARU | Acute receiving unit |
| ARV | AIDS-related virus |
| ARVC | Arrhythnmogenic right ventricularcardiomyopathy |
| ARVD | Arrhythnmogenic right ventricular dysplasia |
| ARVMB | Anomalous right ventricular muscle bundles |
| ARVs | Antiretroviral drugs |
| ARW | Accredited Rehabilitation Worker |
| ARWY | Airway |
| AS | As Stated |
| AS | Anal Seepage |
| AS | Activated sleep |
| AS TOL | As tolerated |
| A's&B's | Apnea and bradycardia |
| AS/AI | Aortic stenosis/aortic insufficiency |
| ASA | Acetylsalicylic Acid (aspirin) |
| ASA | American Society of Anesthesiologists |
| ASAA | Acquired severe aplastic anemia |
| ASAD | Arthroscopic subacromial decompresion |
| aSAH | Aneurysmal subarachnoid hemorrhage |
| ASAP | As Soon As Possible |
| ASAP | Alcohol and Substance Abuse Program |
| ASAT | Aspartate aminotransferase |
| ASB | Anesthesia standby |
| ASBO | Adhesive small-bowel obstruction |
| ASBS | American Society of Bariatric Surgery |
| ASBs | Artificially sweetened beverages |
| ASC | Active symptom control |
| ASC | Altered state of consciousness |
| ASCA | Anti Saccharomyces Cerevisiae Antibody |
| ASCAD | Atherosclerotic coronary artery disease |
| ASCCC | Advanced squamous cell cervical carcinoma |
| ASCCHN | Advanced squamous cell carcinoma of the head and neck |
| ASCI | Acute spinal cord injury |
| ASCO | American Society of Clinical Oncology |
| ASCR | Autologous stem cell rescue |
| ASCS | Autologous stem cell support |
| ASCT | Allogeneic stem cell transplantation |
| ASCUS | Atypical squamous cell of undetermined significance |
| ASCVD | Arteriosclerotic cardiovascular disease |
| ASCVR | Arteriosclerotic cardiovascular renal disease |
| ASD | Acute stress disorder |
| ASD | Adjacent segment defect |
| ASDA | American Sleep Disorders Association |
| ASDH | Acute subdural hematoma |
| ASDPs | Antisocial personality disorders |
| ASE | Abstinence symptom evaluation |
| ASF | Anterior spinal fusion |
| ASFA | Adoption and Safe Families Act |
| ASFR | Age-specific fertility rate |
| ASG | Atrial septal graft |
| ASH | American Society of Hematology |
| AsH | Hypermetropic astigmatism |
| ASHD | Arteriosclerotic heart disease |
| ASI | Active specific immunotherapy |
| aSi | Amorphous silicon |
| ASIA | American Spinal Injury Association |
| ASIH | Anabolic Steroid Induced Hypogonadism |
| ASIMC | Absent, sick in medical center |
| ASIS | Anterior superior iliac spine |
| ASK | Antistreptokinase |
| ASKase | Antistreptokinase |
| ASL | American Sign Language |
| ASLO | Antistreptolysin-O |
| ASLO | Actinobacillus Suis-Like Organism |
| ASLV | Avian sarcoma and leukosis virus |
| AsM | Myopic astigmatism |
| ASMA | Anti-smooth-muscle antibody |
| ASMI | Anteroseptal myocardial infarction |
| ASN | Associates's of Science in Nursing |
| ASO | Accessory sinus ostia |
| ASO | Automatic Stop Order |
| ASOT | Antistreptolysin-O titer |
| ASP | Acute suppurative parotitis |
| ASPDV | Anterior superior pancreaticoduodenal vein |
| ASR | Aldosterone secretion rate |
| ASR | As Required |
| ASR | Age-Standardized Rate |
| ASR | Average Seizure Ratio |
| ASRA | Alcohol Severity Rating Scale |
| ASRM | American Society for Reproductive Medicine |
| ASS | Anterior superior supine |
| ASST | Autologous serum skin test |
| asst | Assistant |
| AST | Aspartate Aminotransferase |
| AST | Allergy skin test |
| ASTH | Australasian Society of Thrombosis and Haemostasis |
| ASTI | Acute soft tissue injury |
| ASTIG | Astigmatism |
| ASTZ | Antistreptozyme test |
| ASU | Acute stroke unit |
| ASV | American Society for Virology |
| ASV | Avian Sarcoma Virus |
| ASV | Anti-snake venom |
| ASVD | Arteriosclerotic vessel disease |
| ASX | Asymptomatic |
| ASYM | Asymmetric |
| AT | Abdominothoracic |
| At Fib | Atrial fibrillation |
| ATA | Atmosphere absolute |
| ATB | Antibiotic |
| ATBF | African tick-bite fever |
| ATC | Around The Clock |
| ATC | Acute toxic class |
| ATCCS | Acute traumatic central cord syndrome |
| ATD | Antithyroid drugs |
| ATE | Adipose tissue extraction |
| ATEM | Analytical transmission electron microscopy |
| ATES | Arterial thromboembolic events |
| ATFL | Anterior talofibular ligament |
| ATG | Antithymocyte globulin |
| ATHR | Angina threshold heart rate |
| ATI | Abdominal Trauma Index |
| ATL | Achilles tendon lengthening |
| ATLL | Adult T-cell leukemia/lymphoma |
| ATLP | Anterior thoracolumbar locking |
| ATLS | Acute tumor lysis syndrome |
| ATM | Acute transverse myelitis |
| ATN | Acute tubular necrosis |
| ATNC | Atraumatic normocephalic |
| aTNM | Autopsy staging of cancer |
| ATNR | Asymmetrical tonic neck reflex |
| ATO | Arsenic trioxide |
| ATP | Adenosine Triphosphate |
| ATP | According-to-protocol |
| ATPS | Ambient temperature&pressure, saturated with water vapor |
| ATR | Achilles tendon reflex |
| atr fib | Atrial fibrillation |
| ATRA | All-trans retinoic acid |
| ATRO | Atropine |
| ATRX | Acute transfusion reaction |
| ATSO | Admit to service of |
| ATSP | Ask to see patient |
| ATT | Alternating triple therapy |
| ATTN | Attention |
| ATTR | Amyloid transtyretin |
| ATU | Alcohol treatment unit |
| ATUE | abbreviated therapeutic use exemption |
| ATV | All-terrain vehicle |
| ATX | Atelectasis |
| ATZ | Aminotetrazole |
| ATZ | Anal transitional zone |
| AU | Allergenic units |
| Au | gold |
| AUB | Abnormal uterine bleeding |
| AuBMT | Autologous bone marrow transplant |
| AUC | Area Under the Curve |
| AUC | Analytical ultracentrifugation |
| AUD | Amplifiable units of DNA |
| AUD COMP | Auditory comprehension |
| AUDIT | Alcohol Use Disorders Identification Test |
| AUG | Acute ulcerative gingivitis |
| AUGIB | Acute upper gastrointestinal bleeding |
| AUIC | Area under the inhibitory curve |
| AUL | Acute undifferentiated leukemia |
| AUR | Acute urinary retention |
| AUS | Acute urethral syndrome |
| AuSCT | Autologous stem cell transplantation |
| AutD | Autistic disorder |
| AUTO | Autologous |
| AUTO SP | Automatic speech |
| AV | Anteverted |
| AV | Anticipatory vomiting |
| AVA | Anthrax vaccine, adsorbed |
| AVB | Atrioventricular block |
| AVC | Acrylic veneer crown |
| AVD | Aortic valve disease |
| AVDP | Asparaginase, vincristine, daunorubicin and prednisone |
| AVE | Aortic valve echocardiogram |
| AVED | Ataxia with isolated vitamin E deficiency |
| AVF | Arteriovenous fistula |
| AVG | Average |
| AVGS | Autologous vein graft stent |
| AVH | Acute viral hepatitis |
| AVHB | Atrioventricular heart block |
| AVLT | Auditory verbal learning test |
| AVM | Arteriovenous malformation |
| AVN | Arteriovenous nicking |
| AVNB | Atrioventricular nodal block |
| AVNR | Atrioventricular nodal re-entry |
| AVNRT | Atrioventricular node recovery time |
| AVOC | Avocation |
| AVP | Arginine vasopressin |
| AVR | Aortic valve replacement |
| AVS | Aortic valve sclerosis |
| AVS | Audio Visual Stimulation |
| AVSS | Afebrile, vital signs stable |
| AW | Abdominal wall |
| AWB | Autologous whole blood |
| AWE | Acetowhite epithelium (oncology) |
| AWI | Anterior wall infarct |
| AWO | Airway obstruction |
| AWP | Airway pressure |
| AWP | Average wholesale price |
| AWS | Alcohol withdrawal seizures |
| AWU | Alcohol withdrawal unit |
| AXB | Axillary block |
| AXC | Aortic cross clamp |
| AXND | Axillary node dissection |
| AXR | Abdomen x-ray |
| AXT | Alternating exotropia |
| AY | Acrocyanotic |
| A-Z test | Aschheim-Zondek test |
| AZA | Azathioprine |
| AZA | Auto Antibodies to Zona Pellucida |
| AZE | Azelastine hydrochloride |
| AZM | Acquisition zoom (technology) |
| AZOOR | Acute zonal occult outer retinopathy |
| AZT | Zidovudine |