2025 ICD-10-CM Diseases and Injuries - Index "A"
The ICD-10-CM Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s). To find the ICD-10-CM code for a specific condition browse this alphabetical index of clinical terms and conditions. Keep in mind that a condition may not appear under the exact same phrasing so make sure to use synonyms. Once you have identified the condition the ICD-10-CM code(s) should be listed next to that condition.
- Aarskog's syndrome
- Abandonment
- Abasia (-astasia) (hysterical)
- Abderhalden-Kaufmann-Lignac syndrome (cystinosis)
- Abdomen, abdominal
- Abdominalgia
- See: Pain, abdominal;
- Abduction contracture, hip or other joint
- See: Contraction, joint;
- Aberrant (congenital)
- See Also: Malposition, congenital;
- Aberration
- Abetalipoproteinemia
- Abiotrophy
- Ablatio, ablation
- Ablepharia, ablepharon
- Abnormal, abnormality, abnormalities
- See Also: Anomaly;
- Abnormity (any organ or part)
- See: Anomaly;
- Abocclusion
- Abolition, language
- Aborter, habitual or recurrent
- Abortion (complete) (spontaneous)
- Abortus fever
- Aboulomania
- Abrami's disease
- Abramov-Fiedler myocarditis (acute isolated myocarditis)
- Abrasion
- Abrism
- Abruptio placentae
- Abruption, placenta
- Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)
- Absence (of) (organ or part) (complete or partial)
- Absorbent system disease
- Absorption
- Abstinence symptoms, syndrome
- Abulia
- Abulomania
- Abuse
- Acalculia
- Acanthamebiasis (with)
- Acanthocephaliasis
- Acanthocheilonemiasis
- Acanthocytosis
- Acantholysis
- Acanthosis (acquired) (nigricans)
- Acapnia
- Acarbia
- Acardia, acardius
- Acardiacus amorphus
- Acardiotrophia
- Acariasis
- Acarodermatitis (urticarioides)
- Acarophobia
- Acatalasemia, acatalasia
- Acathisia (drug induced)
- Accelerated atrioventricular conduction
- Accentuation of personality traits (type A)
- Accessory (congenital)
- Accident
- Accidental
- Accommodation (disorder)
- Accouchement
- See: Delivery;
- Accreta placenta
- Accretio cordis (nonrheumatic)
- Accretions, tooth, teeth
- Acculturation difficulty
- Accumulation secretion, prostate
- Acephalia, acephalism, acephalus, acephaly
- Acephalobrachia monster
- Acephalochirus monster
- Acephalogaster
- Acephalostomus monster
- Acephalothorax
- Acerophobia
- Acetonemia
- Acetonuria
- Achalasia (cardia) (esophagus)
- Ache (s)
- See: Pain;
- Acheilia
- Achillobursitis
- See: Tendinitis, Achilles;
- Achillodynia
- See: Tendinitis, Achilles;
- Achlorhydria, achlorhydric (neurogenic)
- Achluophobia
- Acholia
- Acholuric jaundice (familial) (splenomegalic)
- See Also: Spherocytosis;
- Achondrogenesis
- Achondroplasia (osteosclerosis congenita)
- Achroma, cutis
- Achromat (ism), achromatopsia (acquired) (congenital)
- Achromia parasitica
- Achromia, congenital
- See: Albinism;
- Achylia gastrica
- Acid
- Acidemia
- See Also: Acidosis;
- Acidity, gastric (high)
- Acidocytopenia
- See: Agranulocytosis;
- Acidocytosis
- Acidopenia
- See: Agranulocytosis;
- Acidosis (lactic)
- Aciduria
- Acladiosis (skin)
- Aclasis, diaphyseal
- Acleistocardia
- Aclusion
- Acne
- Acnitis (primary)
- Acosta's disease
- Acoustic
- Acousticophobia
- ACPO (acute colonic pseudo-obstruction)
- Acquired
- Acrania
- Acroangiodermatitis
- Acroasphyxia, chronic
- Acrobystitis
- Acrocephalopolysyndactyly
- Acrocephalosyndactyly
- Acrocephaly
- Acrochondrohyperplasia
- See: Syndrome, Marfan;
- Acrocyanosis
- Acrodermatitis
- Acrodynia
- See: Poisoning, mercury;
- Acromegaly, acromegalia
- Acromelalgia
- Acromicria, acromikria
- Acronyx
- Acropachy, thyroid
- See: Thyrotoxicosis;
- Acroparesthesia (simple) (vasomotor)
- Acropathy, thyroid
- See: Thyrotoxicosis;
- Acrophobia
- Acroposthitis
- Acroscleriasis, acroscleroderma, acrosclerosis
- See: Sclerosis, systemic;
- Acrosphacelus
- Acrospiroma, eccrine
- See: Neoplasm, skin, benign;
- Acrostealgia
- Acrotrophodynia
- ACTH ectopic syndrome
- Actinic
- Actinobacillosis, actinobacillus
- Actinomyces israelii (infection)
- See: Actinomycosis;
- Actinomycetoma (foot)
- Actinomycosis, actinomycotic
- Actinoneuritis
- Action, heart
- Activated protein C resistance
- Activation
- Active
- Acute
- Acyanotic heart disease (congenital)
- Acystia
- Adair-Dighton syndrome (brittle bones and blue sclera, deafness)
- Adamantinoblastoma
- Adamantinoma
- See Also: Cyst, calcifying odontogenic;
- Adamantoblastoma
- Adams-Stokes (-Morgagni) disease or syndrome
- Adaption reaction
- See: Disorder, adjustment;
- Addiction
- See Also: Dependence;
- Addison-Biermer anemia (pernicious)
- Addisonian crisis
- Addison's
- Addison-Schilder complex
- Additional
- See Also: Accessory;
- Adduction contracture, hip or other joint
- See: Contraction, joint;
- Adenitis
- Adenoacanthoma
- Adenoameloblastoma
- Adenocarcinoid (tumor)
- Adenocarcinoma
- See Also: Neoplasm, malignant, by site;
- Adenocarcinoma-in-situ
- See Also: Neoplasm, in situ, by site;
- Adenofibroma
- Adenofibrosis
- Adenoiditis (chronic)
- Adenoids
- Adenolipoma
- Adenolipomatosis, Launois-Bensaude
- Adenolymphoma
- Adenoma
- See Also: Neoplasm, benign, by site;
- Adenomatosis
- Adenomatous
- Adenomyoma
- See Also: Neoplasm, benign, by site;
- Adenomyometritis
- Adenomyosis (uterus)
- Adenopathy (lymph gland)
- Adenosalpingitis
- See: Salpingitis;
- Adenosarcoma
- Adenosclerosis
- Adenosis (sclerosing) breast
- See: Fibroadenosis, breast;
- Adenovirus, as cause of disease classified elsewhere
- Adentia (complete) (partial)
- See: Absence, teeth;
- Adherent
- See Also: Adhesions;
- Adhesions, adhesive (postinfective)
- Adiaspiromycosis
- Adie (-Holmes) pupil or syndrome
- Adiponecrosis neonatorum
- Adiposis
- Adiposity
- Adiposogenital dystrophy
- Adjustment
- Administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility
- Admission (for)
- See Also: Encounter (for);
- Adnexitis (suppurative)
- See: Salpingo-oophoritis;
- Adolescent X-linked adrenoleukodystrophy
- Adrenal (gland)
- Adrenalism, tuberculous
- Adrenalitis, adrenitis
- Adrenarche, premature
- Adrenocortical syndrome
- See: Cushing's, syndrome;
- Adrenogenital syndrome
- Adrenogenitalism, congenital
- Adrenoleukodystrophy
- Adrenomyeloneuropathy
- Adventitious bursa
- Adverse effect
- Advice
- See: Counseling;
- Adynamia (episodica) (hereditary) (periodic)
- Aeration lung imperfect, newborn
- See: Atelectasis;
- Aerobullosis
- Aerocele
- See: Embolism, air;
- Aerodermectasia
- Aerodontalgia
- Aeroembolism
- Aerogenes capsulatus infection
- Aero-otitis media
- Aerophagy, aerophagia (psychogenic)
- Aerophobia
- Aerosinusitis
- Aerotitis
- Affection
- See: Disease;
- Afibrinogenemia
- See Also: Defect, coagulation;
- African
- Aftercare
- See Also: Care;
- After-cataract
- See: Cataract, secondary;
- Agalactia (primary)
- Agammaglobulinemia (acquired (secondary)) (nonfamilial)
- Aganglionosis (bowel) (colon)
- Age (old)
- See: Senility;
- Agenesis
- Ageusia
- Agitated
- Agitation
- Aglossia (congenital)
- Aglossia-adactylia syndrome
- Aglycogenosis
- Agnosia (body image) (other senses) (tactile)
- Agoraphobia
- Agrammatism
- Agranulocytopenia
- See: Agranulocytosis;
- Agranulocytosis (chronic) (cyclical) (genetic) (infantile) (periodic) (pernicious)
- See Also: Neutropenia;
- Agraphia (absolute)
- Ague (dumb)
- See: Malaria;
- Agyria
- Ahumada-del Castillo syndrome
- Aichomophobia
- AIDS (related complex)
- Ailment heart
- See: Disease, heart;
- Ailurophobia
- AIN
- Ainhum (disease)
- AIPHI (acute idiopathic pulmonary hemorrhage in infants (over 28 days old))
- Air
- Airplane sickness
- Akathisia (drug-induced) (treatment-induced)
- Akinesia
- Akinetic mutism
- Akureyri's disease
- Alactasia, congenital
- Alagille (-Watson) syndrome
- Alastrim
- Albers-Schönberg syndrome
- Albert's syndrome
- See: Tendinitis, Achilles;
- Albinism, albino
- Albinismus
- Albright (-McCune) (-Sternberg) syndrome
- Albuminous
- Albuminuria, albuminuric (acute) (chronic) (subacute)
- Albuminurophobia
- Alcaptonuria
- Alcohol, alcoholic, alcohol-induced
- Alcoholism (chronic) (without remission)
- Alder (-Reilly) anomaly or syndrome (leukocyte granulation)
- Aldosteronism
- Aldosteronoma
- Aldrich (-Wiskott) syndrome (eczema-thrombocytopenia)
- Alektorophobia
- Aleppo boil
- Aleukemic
- Aleukia
- Alexia
- Algoneurodystrophy
- Algophobia
- Alienation, mental
- See: Psychosis;
- Alkalemia
- Alkalosis
- Alkaptonuria
- Allen-Masters syndrome
- Allergy, allergic (reaction) (to)
- Allescheriasis
- Alligator skin disease
- Allocheiria, allochiria
- Almeida's disease
- Alopecia (hereditaria) (seborrheica)
- Alpers' disease
- Alpine sickness
- Alport syndrome
- ALTE (apparent life threatening event) in newborn and infant
- Alteration (of), Altered
- Alternating
- Altitude, high (effects)
- Aluminosis (of lung)
- Alveolitis
- Alveolus, alveolar
- Alymphocytosis
- Alymphoplasia, thymic
- Alzheimer's disease or sclerosis
- See: Disease, Alzheimer's;
- Amastia (with nipple present)
- Amathophobia
- Amaurosis (acquired) (congenital)
- See Also: Blindness;
- Amaurotic idiocy (infantile) (juvenile) (late)
- Amaxophobia
- Ambiguous genitalia
- Amblyopia (congenital) (ex anopsia) (partial) (suppression)
- Ameba, amebic (histolytica)
- Amebiasis
- Ameboma (of intestine)
- Amelia
- Ameloblastoma
- See Also: Cyst, calcifying odontogenic;
- Amelogenesis imperfecta
- Amenorrhea
- Amentia
- See: Disability, intellectual;
- American
- Ametropia
- See: Disorder, refraction;
- AMH (asymptomatic microscopic hematuria)
- Amianthosis
- Amimia
- Amino-acid disorder
- Aminoacidopathy
- Aminoaciduria
- Amnes (t)ic syndrome (post-traumatic)
- Amnesia
- Amnion, amniotic
- Amnionitis
- Amok
- Amoral traits
- Amphetamine (or other stimulant)-induced
- Ampulla
- Amputation
- See Also: Absence, by site, acquired;
- Amputee (bilateral) (old)
- Amsterdam dwarfism
- Amusia
- Amyelencephalus, amyelencephaly
- Amyelia
- Amygdalitis
- See: Tonsillitis;
- Amygdalolith
- Amyloid heart (disease)
- Amyloidosis (generalized) (primary)
- Amylopectinosis (brancher enzyme deficiency)
- Amylophagia
- Amyoplasia congenita
- Amyotonia
- Amyotrophia, amyotrophy, amyotrophic
- Anacidity, gastric
- Anaerosis of newborn
- Analbuminemia
- Analgesia
- See: Anesthesia;
- Analphalipoproteinemia
- Anaphylactic
- Anaphylactoid shock or reaction
- See: Shock, anaphylactic;
- Anaphylactoid syndrome of pregnancy
- Anaphylaxis
- See: Shock, anaphylactic;
- Anaplasia cervix
- See Also: Dysplasia, cervix;
- Anaplasmosis [A. phagocytophilum] (transfusion transmitted)
- Anarthria
- Anasarca
- Anastomosis
- Anatomical narrow angle
- Ancylostoma, ancylostomiasis (braziliense) (caninum) (ceylanicum) (duodenale)
- Andersen's disease (glycogen storage)
- Anderson-Fabry disease
- Andes disease
- Andrews' disease (bacterid)
- Androblastoma
- Androgen insensitivity syndrome
- See Also: Syndrome, androgen insensitivity;
- Androgen resistance syndrome
- See Also: Syndrome, androgen insensitivity;
- Android pelvis
- Androphobia
- Anectasis, pulmonary (newborn)
- See: Atelectasis;
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound)
- Anemophobia
- Anencephalus, anencephaly
- Anergasia
- See: Psychosis, organic;
- Anesthesia, anesthetic
- Anetoderma (maculosum) (of)
- Aneurin deficiency
- Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular)
- Angelman syndrome
- Anger
- Angiectasis, angiectopia
- Angiitis
- Angina (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor)
- Angioblastoma
- Angiocholecystitis
- See: Cholecystitis, acute;
- Angiocholitis
- See Also: Cholecystitis, acute;
- Angiodysgenesis spinalis
- Angiodysplasia (cecum) (colon)
- Angioedema (allergic) (any site) (with urticaria)
- Angioendothelioma
- Angioendotheliomatosis
- Angiofibroma
- See Also: Neoplasm, benign, by site;
- Angiohemophilia (A) (B)
- See: Disease, von Willebrand;
- Angioid streaks (choroid) (macula) (retina)
- Angiokeratoma
- See: Neoplasm, skin, benign;
- Angioleiomyoma
- Angiolipoma
- Angioma
- See Also: Hemangioma, by site;
- Angiomatosis
- Angiomyolipoma
- Angiomyoliposarcoma
- Angiomyoma
- Angiomyosarcoma
- Angiomyxoma
- Angioneurosis
- Angioneurotic edema (allergic) (any site) (with urticaria)
- Angiopathia, angiopathy
- Angiosarcoma
- See Also: Neoplasm, connective tissue, malignant;
- Angiosclerosis
- See: Arteriosclerosis;
- Angiospasm (peripheral) (traumatic) (vessel)
- See Also: Vasospasm;
- Angiospastic disease or edema
- Angiostrongyliasis
- Anguillulosis
- See: Strongyloidiasis;
- Angulation
- Angulus infectiosus (lips)
- Anhedonia
- Anhidrosis
- Anhydration
- Anhydremia
- Anidrosis
- Aniridia (congenital)
- Anisakiasis (infection) (infestation)
- Anisakis larvae infestation
- Aniseikonia
- Anisocoria (pupil)
- Anisocytosis
- Anisometropia (congenital)
- Ankle
- Ankyloblepharon (eyelid) (acquired)
- See Also: Blepharophimosis;
- Ankyloglossia
- Ankylosis (fibrous) (osseous) (joint)
- Ankylostoma
- See: Ancylostoma;
- Ankylostomiasis
- See: Ancylostomiasis;
- Ankylurethria
- See: Stricture, urethra;
- Annular
- Anoctaminopathy
- Anodontia (complete) (partial) (vera)
- Anomaly, anomalous (congenital) (unspecified type)
- Anomia
- Anonychia (congenital)
- Anophthalmos, anophthalmus (congenital) (globe)
- Anopia, anopsia
- Anorchia, anorchism, anorchidism
- Anorexia
- Anorgasmy, psychogenic (female)
- Anosmia
- Anosognosia
- Anosteoplasia
- Anovulatory cycle
- Anoxemia
- Anoxia (pathological)
- Anteflexion
- Antenatal
- Antepartum
- Anterior
- Antero-occlusion
- Anteversion
- Anthophobia
- Anthracosilicosis
- Anthracosis (lung) (occupational)
- Anthrax
- Anthropoid pelvis
- Anthropophobia
- Antibodies, maternal (blood group)
- Antibody
- Anticardiolipin syndrome
- Anticoagulant, circulating (intrinsic)
- See Also: - Disorder, hemorrhagic;
- Antidiuretic hormone syndrome
- Antimonial cholera
- See: Poisoning, antimony;
- Antiphospholipid
- Antisocial personality
- Antithrombinemia
- Antithromboplastinemia
- Antithromboplastinogenemia
- Antitoxin complication or reaction
- Antlophobia
- Antritis
- Antrum, antral
- Anuria
- Anus, anal
- Anusitis
- Anxiety
- Aorta, aortic
- Aortectasia
- See: Ectasia, aorta;
- Aortitis (nonsyphilitic) (calcific)
- Apathetic thyroid storm
- See: Thyrotoxicosis;
- Apathy
- Apeirophobia
- Apepsia
- Aperistalsis, esophagus
- Apertognathia
- Apert's syndrome
- Aphagia
- Aphakia (acquired) (postoperative)
- Aphasia (amnestic) (global) (nominal) (semantic) (syntactic)
- Aphonia (organic)
- Aphthae, aphthous
- Apical
- Apiphobia
- Aplasia
- Apnea, apneic (of) (spells)
- Apneumatosis, newborn
- Apocrine metaplasia (breast)
- Apophysitis (bone)
- Apoplectiform convulsions (cerebral ischemia)
- Apoplexia, apoplexy, apoplectic
- Appearance
- Appendage
- Appendicitis (pneumococcal) (retrocecal)
- Appendicopathia oxyurica
- Appendix, appendicular
- Appetite
- Apple peel syndrome
- Apprehension state
- Apprehensiveness, abnormal
- Approximal wear
- Apraxia (classic) (ideational) (ideokinetic) (ideomotor) (motor) (verbal)
- Aptyalism
- Apudoma
- Aqueous misdirection
- Arabicum elephantiasis
- See: Infestation, filarial;
- Arachnitis
- See: Meningitis;
- Arachnodactyly
- See: Syndrome, Marfan;
- Arachnoiditis (acute) (adhesive) (basal) (brain) (cerebrospinal)
- See: Meningitis;
- Arachnophobia
- Arboencephalitis, Australian
- Arborization block (heart)
- ARC (AIDS-related complex)
- Arch
- Arches
- Arcuate uterus
- Arcuatus uterus
- Arcus (cornea) senilis
- Arc-welder's lung
- Areflexia
- Areola
- Argentaffinoma
- See Also: Neoplasm, uncertain behavior, by site;
- Argininemia
- Arginosuccinic aciduria
- Argyll Robertson phenomenon, pupil or syndrome (syphilitic)
- Argyria, argyriasis
- Argyrosis, conjunctival
- Arhinencephaly
- Ariboflavinosis
- Arm
- Arnold-Chiari disease, obstruction or syndrome (type II)
- Aromatic amino-acid metabolism disorder
- Arousals, confusional
- Arrest, arrested
- Arrhenoblastoma
- Arrhythmia (auricle) (cardiac) (juvenile) (nodal) (reflex) (supraventricular) (transitory) (ventricle)
- Arrillaga-Ayerza syndrome (pulmonary sclerosis with pulmonary hypertension)
- Arsenical pigmentation
- Arsenism
- See: Poisoning, arsenic;
- Arterial
- Arteriofibrosis
- See: Arteriosclerosis;
- Arteriolar sclerosis
- See: Arteriosclerosis;
- Arteriolith
- See: Arteriosclerosis;
- Arteriolitis
- Arteriolosclerosis
- See: Arteriosclerosis;
- Arterionephrosclerosis
- See: Hypertension, kidney;
- Arteriopathy
- Arteriosclerosis, arteriosclerotic (diffuse) (obliterans) (of) (senile) (with calcification)
- Arteriospasm
- Arteriovenous
- Arteritis
- Artery, arterial
- Arthralgia (allergic)
- See Also: Pain, joint;
- Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)
- Arthrocele
- See: Effusion, joint;
- Arthrodesis status
- Arthrodynia
- See Also: Pain, joint;
- Arthrodysplasia
- Arthrofibrosis, joint
- See: Ankylosis;
- Arthrogryposis (congenital)
- Arthrokatadysis
- Arthropathy
- See Also: Arthritis;
- Arthropyosis
- Arthrosis (deformans) (degenerative) (localized)
- Arthus' phenomenon or reaction
- Articular
- Articulation, reverse (teeth)
- Artificial
- Arytenoid
- Asadollahi-Rauch syndrome
- Asbestosis (occupational)
- Ascariasis
- Ascaridosis, ascaridiasis
- Ascaris (infection) (infestation) (lumbricoides)
- Ascending
- ASC-H (atypical squamous cells cannot exclude high grade squamous intraepithelial lesion on cytologic smear)
- Aschoff's bodies
- See: Myocarditis, rheumatic;
- Ascites (abdominal)
- ASC-US (atypical squamous cells of undetermined significance on cytologic smear)
- Aseptic
- Asherman's syndrome
- Asialia
- Asiatic cholera
- See: Cholera;
- Asimultagnosia (simultanagnosia)
- Askin's tumor
- Asocial personality
- Asomatognosia
- Aspartylglucosaminuria
- Asperger's disease or syndrome
- Aspergilloma
- See: Aspergillosis;
- Aspergillosis (with pneumonia)
- Aspergillus (flavus) (fumigatus) (infection) (terreus)
- See: Aspergillosis;
- Aspermatogenesis
- See: Azoospermia;
- Aspermia (testis)
- See: Azoospermia;
- Asphyxia, asphyxiation (by)
- Aspiration
- Asplenia (congenital)
- Assam fever
- Assault, sexual
- Assmann's focus NEC
- Astasia (-abasia) (hysterical)
- Asteatosis cutis
- Astereognosia, astereognosis
- Asterixis
- Asteroid hyalitis
- See: Deposit, crystalline;
- Asthenia, asthenic
- Asthenopia
- See Also: Discomfort, visual;
- Asthenospermia
- Asthma, asthmatic (bronchial) (catarrh) (spasmodic)
- Astigmatism (compound) (congenital)
- Astraphobia
- Astroblastoma
- Astrocytoma (cystic)
- Astroglioma
- Asymbolia
- Asymmetry
- See Also: Distortion;
- Asynergia, asynergy
- Asystole (heart)
- See: Arrest, cardiac;
- At risk
- Ataxia, ataxy, ataxic
- Ataxia-telangiectasia (Louis-Bar)
- Atelectasis (massive) (partial) (pressure) (pulmonary)
- Atelocardia
- Atelomyelia
- Atheroembolism
- Atheroma, atheromatous
- See Also: Arteriosclerosis;
- Atheromatosis
- See: Arteriosclerosis;
- Atherosclerosis
- See Also: Arteriosclerosis;
- Athetosis (acquired)
- Athlete's
- Athrepsia
- Athyrea (acquired)
- See Also: Hypothyroidism;
- Atonia, atony, atonic
- Atopy
- See: History, allergy;
- Atransferrinemia, congenital
- Atresia, atretic
- Atrichia, atrichosis
- See: Alopecia;
- Atrophia
- See Also: Atrophy;
- Atrophie blanche (en plaque) (de Milian)
- Atrophoderma, atrophodermia (of)
- Atrophy, atrophic (of)
- Attack, attacks
- Attention (to)
- Attrition
- Atypical, atypism
- Auditory
- Aujeszky's disease
- Aurantiasis, cutis
- Auricle, auricular
- Auriculotemporal syndrome
- Austin Flint murmur (aortic insufficiency)
- Australian
- Autism, autistic (childhood) (infantile)
- Autoantibodies, multiple confirmed islet, with normoglycemia
- Autodigestion
- Autoerythrocyte sensitization (syndrome)
- Autographism
- Autoimmune
- Autoimmunity, confirmed islet, with dysglycemia
- Autointoxication
- Automatism
- Autonomic, autonomous
- Autosensitivity, erythrocyte
- Autosensitization, cutaneous
- Autosome
- Autotopagnosia
- Autotoxemia
- Autumn
- Avellis' syndrome
- Aversion
- Aviator's
- Avitaminosis (multiple)
- See Also: Deficiency, vitamin;
- AVNRT (atrioventricular nodal re-entrant tachycardia)
- AVRT (atrioventricular nodal re-entrant tachycardia)
- Avulsion (traumatic)
- Awareness of heart beat
- Axenfeld's
- Axilla, axillary
- Axonotmesis
- See: Injury, nerve;
- Ayerza's disease or syndrome (pulmonary artery sclerosis with pulmonary hypertension)
- Azoospermia (organic)
- Azotemia
- Aztec ear
- Azygos
