Browse Medical Abbreviations

C Celsius (centigrade); cytosine; contact; Carbon (element); Calorie (kilocalorie)
c calorie (small calorie); with
C&A conscious and alert
C&C confirmed and compatible
C&DB cough and deep breath
C&P crowning and pushing
C&S culture and sensitivity
C-B chest-back
C-collar cervical collar
C-spine cervical spine
c.m.s. to be taken tomorrow morning (cras mane sumendus)
c.n. tomorrow night (cras nocte)
c.n.s. to be taken tomorrow night (cras nocte sumendus)
c/o complains of
C/S consult
C/TG cholesterol/triglyceride ratio
C/w consistent with; continue with
C1 first cervical vertebra
C2 second cervical vertebra
CA cancer, carcinoma; cortical area; chronological age; coronary artery
Ca Calcium (element)
ca. about; approximately
CAB compressions-airway-breathing
CABG coronary artery bypass graft
CAC Certified Addictions Counselor
CaCO3 calcium carbonate
CACT carnitine acylcarnitine translocase (deficiency)
CAD computer-aided detection; coronary artery disease
CAE complement activity enzyme
CAF cytoxan, adriamycin, fluorouracil
CAGE controlling, anger/annoyance, guilt, eye opener (questions)
CAH chronic active hepatitis; congenital adrenal hyperplasia
CAI computer assisted instruction
Cal Calorie (kilocalorie)
cal calorie
CAM complementary and alternative medicine
cAMP cyclic adenosine monophosphate
CAO conscious, alert, and oriented
CAOX3 conscious, alert, oriented to person, place, time
cap capillary; capsule
CAP community acquired pneumonia
CAPD continuous ambulatory peritoneal dialysis; central auditory processing disorder
caps capsules
CARP confluent and reticulated papillomatosis
CAST cardiac arrhythmia suppression trial
CAT computerized axial tomography; crisis assessment and treatment
cath cathartic; catheter(ization)
CAU child and adolescent unit; clinical assessment unit
cauc Caucasian
CAUTI catheter-associated urinary tract infection
cav cavity
CAVP continuous arterial venous pressure
CB carotid bruit
CBC complete blood count
CBD common bile duct; cannabidiol
CBE clinical breast exam; charting by exception
CBF cerebral blood flow
CBG capillary blood gas; corticosteroidbinding globulin
CBI continuous bladder irrigation
CBLL capillary blood lead level
CBO community based organization
CBP chronic bacterial prostatitis
CBRNE chemical, biological, radiological, nuclear, and explosive agents
CBS casual blood sugar
CBSC cord blood stem cells
CBT computer-based training; cognitive behavioral therapy
CBW chemical and biological warfare
cc cubic centimeter
CC current complaint; chief complaint; care coordinator; cardiac catheterization
CCA calcium channel antagonist; common carotid artery
CCB calcium channel blocker; change control board
CCC chronic care clinic
CCCA central centrifugal cicatricial alopecia
CCE clubbing, cyanosis edema
CCF congestive cardiac failure
CCH care closer to home
CCK cholecystokinin
CCMS clean catch midstream (specimen)
CCNU lomustine
CCP clinical care pathway
CCPD continuous cycling peritoneal dialysis
CCRA cardiac cath recovery area
CCT certificate of completion of training; controlled cord traction
CCU critical care unit; coronary/cardiac care unit
CCW counterclockwise
CD chemical dependency; cycle day; current diagnosis; Crohn's disease; controlled drug(s); conduct disorder; cluster of differentiation; cesarean delivery; cardiovascular disease; communicable disease
Cd Cadmium (element)
CD-ROM compact disc read-only memory
CD4 helper T lymphocytes
CD8 cytotoxic T lymphocytes
CDA Certified Dental Assistant
CDAD Clostridium difficile-associated diarrhea
CDC Centers for Disease Control and Prevention
CDH congenital dislocation hip
CDHF chronic diastolic heart failure
CDMI Clinical Digital Maturity Index
cDNA complementary DNA
CDT Clostridium difficile toxin; Certified Dental Technician
CDU chemical dependency unit
Ce Cerium (element)
CE continuing education
CEA carcinoembryonic antigen; cultured epithelial autografts; carcinoembryonic disease; carotid endarterectomy
CEH continuing education hour
CEN Certified Emergency Nurse
cert certified, certificate
cerv cervix/cervical
CETR care, education and treatment review
CEU continuing education unit
CF cystic fibrosis
CFC chlorofluorocarbon
CFR Certified First Responder; child fatality review; Code of Federal Regulations; case fatality ratio
CFS chronic fatigue syndrome
CFTR cystic fibrosis transmembrane regulator
CFU colony forming unit
cg centigram (one hundredth of a gram)
CG chorionic gonadotropin
CGA contact guard assist; comprehensive geriatric assessment
Cgm centigram (one hundredth of a gram)
cGMP cyclic guanine monophosphate
CGN chronic glomerulonephritis
cGy centigray
ch chest; child
CH congenital hypothyroidism; clinical hold
ch px chicken pox
CHADS congestive heart failure, hypertension, age, diabetes mellitus, prior stroke or TIA
CHB complete heart block
CHC community health center; continuing health care
CHD congenital heart disease; coronary heart disease
ChE cholinesterase
chem chemical, chemistry
chemo chemotherapy
CHF congestive heart failure
CHHA certified home health aide/agency
CHI closed head injury
CHL conductive hearing loss
CHO carbohydrate
chol cholesterol
Chr chronic
CHT closed head trauma
CI cardiac index; cochlear implant; confidence interval
Ci curie
CIA collagen-induced arthritis
CIBH change in bowel habits
CIC circulating immune complex; certified infection control; crisis intervention center
CICU coronary intensive care unit
cig cigarette
CIN cervical intraepithelial neoplasia
CIP clean in place; cost/continuous improvement plan/process
circ circulate; circumference; circumcision
CIS carcinoma in situ
CISM critical incident stress management
CJD creutzfeldt-jakob disease
CK creatine kinase; creatinine phosphokinase
CK-MB serum creatine kinase, myocardial-bound
CKC cold knife conization; closed kinetic chain
CKD chronic kidney disease
Cl Chlorine (element)
cl centiliter
Cl- Chloride
CLA certified laboratory assistant
CLcr creatinine clearance
CLD chronic liver disease
CLI critical limb ischemia
CLIA clinical laboratory improvement amendments
clin clinic
CLL chronic lymphocytic leukemia
CLN clinical lead/liaison nurse
CLOD clinical lead for organ donation
CLR clear
CLTC citizens for long-term care
CM cervical mucus; case/care management
cm centimeter
cm2 square centimeter
CMA Certified Medical Assistant
CMC carpo metacarpal
CME continuing medical education
CMF cyclophosphamide, methotrexate, and fluorouracil
CMG cystometrogram
CMHC community mental health center
CML chronic myeloid leukemia; chronic myelogenous leukemia
CMO care management organization; chief medical officer; comfort measures only
cmp cardiomyopathy
CMP comprehensive metabolic panel
CMS Centers for Medicare and Medicaid
CMT cervical motion tenderness; certified medication technician
CMTC cutis marmorata telangiectatica congenita
CMV controlled mechanical ventilator; cytomegalovirus
CN cognitively normal; cranial nerve; child nutrition
CNA Certified Nurse Aide
CNE chronic nervous exhaustion
CNH chondrodermatitis nodularis helices
CNM Certified Nurse Midwife
CNO Chief Nursing Officer
CNR closed nasal reduction
CNS Clinical Nurse Specialist; central nervous system
CNSC certified nutrition support clinician
CO Certified Orthotist; carbon monoxide; cardiac output
Co Cobalt (element)
CO2 carbon dioxide
COA coarctation of the aorta; Certified Ophthalmic Assistant
CoA Coenzyme A
COAD chronic obstructive airways disease
coag coagulation
COB coordination of benefits; close of business
COC cauterization of the cervix; Certificate of Coverage; combined oral contraceptive
COCs combined oral contraceptives (estrogen and progestin)
COG center of gravity
COH carbohydrate; controlled ovarian hyperstimulation
COLD chronic obstructive lung disease
COM chronic otitis media
COMP cartilage oligomeric matrix protein
comp. compound; complication; compounded of
COMT catechol-o-methyltransferase
conc concentrated
cond condition
cong congenital
const constant
cont continue(d)
contras contraindications
contrx contractions
COO chief operating officer
COP conditions of participation (Medicare)
COPD chronic obstructive pulmonary disease
COPE chronic obstructive pulmonary emphysema
CORE coordinated outbreak response and evaluation
corr correct, correction
COT Nicotine/Cotinine (COT test)
COTA certified occupational therapy assistant
CoV coronavirus
COWS clinical opiate withdrawal scale
COX cyclooxygenase
COX-2 cyclooxygenase 2 (inhibitors)
cP centipoise unit
CP cleft palate; chest pain; cerebral palsy; cicatricial pemphigoid; cardiopulmonary
CPA cerebellopontine angle; costophrenic angle
CPAP continuous positive airway pressure
CPB competitive protein binding
CPC clinicopathologic conference
CPD congenital polycystic disease; chronic pulmonary disease; cephalopelvic disproportion
CPE chronic pulmonary emphysema
CPHSS Cincinnati Prehospital Stroke Scale
CPhT Certified Pharmacy Technician
CPK creatinine phosphokinase; creatine phosphokinase
CPM counts per minute; care plan meeting; central pontine myelinolysis; continuous passive mobilizer; continuous passive motion
CPMI chronic and persistent mental illness
CPP cerebral perfusion pressure
CPPV continuous positive pressure ventilation
CPR cardiopulmonary resuscitation
CPS Child Protective Services
CPT chest physiotherapy; current procedural terminology; carnitine palmitoyl transferase
CQI continuous quality improvement; clinical quality indicator
CR conditioned reflex; creatinine; complete remission; controlled release (medication); crown-rump length
Cr Chromium (element)
CRA clinical research associate
CRB clinical reference board; change review board
CRC Certified Rehabilitation Counselor
CrCl creatinine clearance
CRD chronic respiratory disease
crea creatinine
creat creatinine
CREST calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, telangiectasias
CRF chronic renal failure; cardiac risk factors; case report form; corticotropin-releasing factor
CRH corticotropin-releasing hormone
CRI constant rate infusion; catheter-related infection; chronic renal insufficiency
CRIF closed reduction-internal fixation
crit Hematocrit
CRNA certified registered nurse anesthetist
cRNA chromosomal RNA
CRNH certified registered nurse hospice
CRNP Certified Registered Nurse Practitioner
CRO clinical research organization
CRP C-reactive protein
CRPS complex regional pain syndrome
CRR consult review request
CRRT continuous renal replacement therapy
CRS congenital rubella syndrome; chronic rhinosinusitis
CRS-R Conners Rating Scales-Revised
CRT Certified Respiratory Therapist; capillary refill time; cardiac resynchronization therapy
Crt creatinine
CRTT Certified Respiratory Therapy Technician
CRU coronary rehabilitation unit
cryo cryosurgery; cryoprecipitate
CS culture and sensitivity; completed stroke; close supervision; clinically significant; chondroitin sulfate; cesarean section; cardiogenic shock; cardiac sphincter
cs conditioned stimulus
Cs Cesium (element)
CSA cyclosporin A; central sleep apnea; Controlled Substances Act
CSF colony-stimulating factor; cerebrospinal fluid
CSH combat support hospital
CSHF chronic systolic heart failure
CSIC cervical spine immobilization collar
CSII continuous subcutaneous insulin infusion
CSM cervical spondylotic myelopathy; circulation, sensory, and motor
CSO chief scientific officer
CSP carotid sinus pressure
CSR central supply room; Cheyne-Stokes respiration
CSS central service supply
CST contraction stress test; Certified Surgical Technologist
CSU catheter specimen of urine
CT chest tube; clinical trial; cognitive therapy; computed/computerized tomography
CT scan computed tomography scan
CT/GC Chlamydia Trachomatis/Neisseria Gonorrhea
CTA computerized tomography angiography; clear to auscultation
CTAB clear to auscultation bilaterally
CTB cease to breathe; chronic tuberculosis
CTC computed tomographic colonography; circulating tumor cell; common toxicity criteria; chlortetracycline
CTCL Cutaneous T-cell lymphoma
CTD connective tissue disease; cumulative trauma disorder
CTE chronic traumatic encephalopathy
CTG cathepsin G
CTLSO cervical thoracic lumbar sacral orthosis
cTnI cardiac troponin I
cTnT cardiac troponin T
CTO clinical trial outline
CTP color, temperature, pulse
CTPA computed tomography pulmonary angiogram
ctr control
CTR carpal tunnel release
CTS carpal tunnel syndrome
ctx contraction
CTZ chemoreceptor trigger zone
Cu Copper (element)
CU case unknown
CUC chronic ulcerative colitis
CUD carnitine uptake defect
CUm cubic micron
cur current
CV cardiovascular; curriculum vitae
CVA cerebrovascular accident; cardiovascular accident; cerebral vascular accident; costovertebral angle
CVAT costovertebral angle tenderness
CVB coxsackievirus B
CVC central venous catheter
CVD cardiovascular disease; cerebrovascular disease
CVI chronic venous insufficiency
CVL central venous line
CVOU cardiovascular outpatient unit
CVP central venous pressure
CVRB critical value read back
CvS cardiovascular system
CVS chorionic villus sampling; chronic villus sampling; clean-voided specimen; computer vision syndrome
CVX cervix
CWD canal wall down
CWR canal wall reconstruction
CWU canal wall up
Cx cancel; cervix/cervical; conscious; culture
CX circumflex
Cx Bx cervical biopsy
CXR chest x-ray
CY calendar year
Cy cyanosis
CYS children and youth services
cysto cystoscopy
cytol cytology