+ Sortable table Abbreviation Meaning c̅ (c with an overbar) with (from Latin cum) C cytosine cervical vertebrae C1 atlas – first cervical vertebra of the spine C2 axis – second cervical vertebra of the spine CA carcinoma cancer Ca calcium carcinoma cancer CAA coronary artery aneurysm c/b complicated by CABG coronary artery bypass graft (pronounced "cabbage") CABP coronary artery bypass procedure CAD coronary artery disease CADASIL cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy CAG coronary artery graft coronary angiography CAGE cut down, annoyed, guilty, eye opener (screening for alcoholism) CAGS coronary artery graft surgery cAMP cyclic adenosine monophosphate CAH chronic active hepatitis congenital adrenal hyperplasia CAKUT congenital abnormalities of the kidney and urinary tract, see bladder outlet obstruction CALLA common acute lymphocytic leukemia antigen CALM café au lait macules CAM cell adhesion molecule complementary and alternative medicine CAMP cyclic adenosine monophosphate CAP community-acquired pneumonia CAPD continuous ambulatory peritoneal dialysis CAO conscious, alert, and oriented (no altered level of consciousness) CaOx calcium oxalate Caps capsule CAs congenital anomalies, see birth defect CAS childhood apraxia of speech CAT / CT computed axial tomography / computed tomography Cath catheter CAUTI Catheter-associated urinary tract infection CBA cost–benefit analysis (of treatment methods) CBC/DIFF complete blood count/differential CBD common bile duct CBE clinical breast examination CBF cerebral blood flow CBI continuous bladder irrigation, as in Hematuria (Acute clot retention) CBS chronic brain syndrome CC cc cubic centimeter (use ml instead—see the list of abbreviations used in prescriptions) chief complaint cardiac catheter carbon copy closing capacity CCA clear cell adenocarcinoma CCB calcium channel blocker CCCU critical coronary care unit CCE C/C/E clubbing, cyanosis, and edema (general signs of cardiovascular disease) CCG Clinical commissioning group CCF congestive cardiac failure CCK cholecystokinin CCK-PZ cholecystokinin-pancreozymin CCNS cell cycle–nonspecific [drug] (a type of drug used in chemotherapy) CCOC clear cell odontogenic carcinoma CCOT calcifying cystic odontogenic tumor (formerly called calcifying odontogenic cyst) CCP cyclic citrullinated peptide CCR cardiocerebral resuscitation CCU coronary care unit critical care unit CD Celiac disease Crohn's disease chemical dependency cluster of differentiation controlled delivery CDAD Clostridioides difficile–associated diarrhoea CDC Centers for Disease Control and Prevention CDGP constitutional delay of growth and puberty CDH congenital dislocated hip CDI central diabetes insipidus Clostridioides difficile infection cool, dry, intact (when referring to incision/surgical sites) or clean, dry, intact when referring to bandages/dressings CDMR caesarean delivery on maternal request CDP cytosine diphosphate CDR cutaneous drug reaction CDx companion diagnostic CEA carcinoembryonic antigen carotid endarterectomy cost-effectiveness analysis CEIOL cataract extraction with intraocular lens placement CF cystic fibrosis CFA complement-fixing antibody colonization factor antigen CFIDS chronic fatigue immune dysfunction syndrome CFR case fatality rate CFS chronic fatigue syndrome CFT complement fixation test capillary filling time CFTR cystic fibrosis transmembrane conductance regulator CFU colony-forming unit CGD chronic granulomatous disease constitutional growth delay CGI Clinical global impression (including subscales such as CGI-BP, CGI-C, CGI-E, CGI-I, CGI-S) cGMP cyclic guanosine monophosphate CGN chronic glomerulonephritis CH congenital hypothyroidism CHC combined hormonal contraceptive CHD chronic heart disease congenital heart defect coronary heart disease ChE cholinesterase CHEM-7 a group of blood tests, commonly called a basic metabolic panel (blood urea nitrogen, carbon dioxide, creatinine, glucose, serum chloride, serum potassium, serum sodium) CHEM-20 a group of blood tests (albumin, alkaline phosphatase, alanine transaminase, aspartate aminotransferase, blood urea nitrogen, calcium – serum, serum chloride, carbon dioxide, creatinine, direct bilirubin, gamma-glutamyl transpeptidase, glucose test, lactate dehydrogenase, phosphorus – serum, potassium test, serum sodium, total bilirubin, total cholesterol, total protein, uric acid) CHE cholinesterase CHF congestive heart failurecontinuous hemofiltration CHIP clonal hematopoiesis of indeterminate potential CHO carbohydrate CHOP cyclophosphamide, doxorubicin (a.k.a. hydroxydaunorubicin), vincristine(a.k.a. Oncovin), prednisone (chemotherapy regimen) Chol cholesterol CHS cannulated hip screw ChT chemotherapy CHT congenital hypothyroidism CI confidence interval cardiac index CIB cibus (food) CICU cardiac intensive care unit CIDP chronic inflammatory demyelinating polyneuropathy CIMF chronic idiopathic myelofibrosis CIN cervical intraepithelial neoplasia, contrast-induced nephropathy CINV Chemotherapy-induced nausea and vomiting Circ circumcision circulation CIS carcinoma in situ CIVI continuous intravenous infusion CIWA Clinical Institute Withdrawal Assessment for Alcohol CJD Creutzfeldt–Jakob disease CK creatine kinase (formerly CPK) CKD chronic kidney disease CKMB MB isoenzyme of creatine kinase Cl chlorine clearance CLABSI central line-associated bloodstream infections, see central venous catheter CLARE contact lens acute red eye CLL chronic lymphocytic leukemia CLN cervical lymph node CLND cervical lymph node dissection complete lymph node dissection CLP cleft lip and palate CLS capillary leak syndrome CM Chirurgiae Magister, Master of Surgery (British and Commonwealth countries medical degree)Caucasian malecardiomyopathy CMD cystic medial degeneration CME continuing medical education CML chronic myelogenous leukemia, also called chronic myeloid leukaemia CMML chronic myelomonocytic leukemia CMO comfort measures only (palliative care or hospice) CMP complete metabolic profile (a blood panel) cytosine monophosphate CMS Centers for Medicare and Medicaid Services chronic mountain sickness CMT cervical motion tenderness Charcot–Marie–Tooth disease CMV cytomegalovirus CN cranial nerves CNS central nervous system Clinical nurse specialist Crigler–Najjar syndrome CNVM Choroidal Neovascular Membranes C/O or c/o complains of... CO cardiac output carbon monoxide complains of... CoA coarctation of the aorta COAD chronic obstructive airways disease COCP combined oral contraceptive pill COH controlled ovarian hyperstimulation COLD chronic obstructive lung disease Comp compound Conj conjunctiva CoNS coagulase-negative staphylcocci COP cryptogenic organizing pneumonitis COPD chronic obstructive pulmonary disease CO2 carbon dioxide COVID coronavirus disease COX-1 cyclooxygenase 1 COX-2 cyclooxygenase 2 COX-3 cyclooxygenase 3 CP cerebral palsy chest pain constrictive pericarditis CPAM congenital pulmonary airway malformation CPAP continuous positive airway pressure CPC clinical–pathological conference CPCR cardiopulmonary-cerebral resuscitation, a version of CPR CPD cephalopelvic disproportion CPE Clostridium perfringens enterotoxin cardiogenic pulmonary edema Carbapenemase producing Enterobacteriaceae CPG clinical practice guideline CPK creatine phosphokinase CPKMB creatine phosphokinase heart CPP cerebral perfusion pressure CPPD calcium pyrophosphate cyclic perimenstrual pain and discomfortMaternity and Women's Health Care, Loudermilk-Perry-Cashion-Allen, 2012, page 121 (premenstrual syndrome) CPR cardiopulmonary resuscitation CPT Current Procedural Terminology CR complete remission (complete response) controlled release Cr creatinine CRC colorectal cancer CrCl creatinine clearance (Note: Looks similar to, but does not mean, the chromium chlorides—CrCl2, CrCl3, CrCl4) CRD chronic renal disease circadian rhythm disorder CRE carbapenem-resistant Enterobacteriaceae Creat creatinine CREST calcinosis, Raynaud esophagus, sclerosis, teleangiectasiae CRF chronic renal failure corticotropin-releasing factor CrGN crescentic glomerulonephritis CRH corticotropin-releasing hormone CRI chronic renal insufficiency Crike Cricothyrotomy CRISPR clustered regularly interspaced short palindromic repeats Crit hematocrit CRL crown-rump length CRNA certified registered nurse anesthetist CRO contract research organization CRP C-reactive protein CRPC castration-resistant prostate cancer CRPS complex regional pain syndrome CRRT continuous renal replacement therapy CRS congenital rubella syndrome CRSD circadian rhythm sleep disorder CRT cardiac resynchronization therapy (artificial pacemaker) chemoradiotherapy conformal radiotherapy (irradiated zone conforms to boundaries) cathode-ray tubecapillary refill time central retinal thickness certified respiratory therapist CRTx chemoradiotherapy CS caesarean section compartment syndrome culture sensitivity Churg–Strauss syndrome C/S Caesarean section C&S culture and sensitivity (antibiogram) CsA cyclosporin A CSA Controlled Substances Act C-section cesarean section CSF cerebrospinal fluid colony-stimulating factor CSME clinically significant macular edema CSOM chronic suppurative otitis media CSP cavum septi pellucidi CSPC community specialist palliative care C-spine cervical spine CSR cumulative survival rate C-SSRS Columbia Suicide Severity Rating Scale CSU catheter specimen of urine CST contraction stress test CT computed tomography cervicothoracic CTA clear to auscultation computed tomography angiography CTAB clear to auscultation bilaterally; also written CTA B CTAP CT of the abdomen and pelvisCT during arterial portography CTCAE Common Terminology Criteria for Adverse Events CT c/a/p CT scan of chest, abdomen, and pelvis CTD connective tissue disease CTE chronic traumatic encephalopathy coefficient of thermal expansion CTEPH Chronic thromboembolic pulmonary hypertension CTEV congenital talipes equinovarus CTO chronic total occlusion Community Treatment Order (psychiatric term for forced drugging outside hospital context) CTP cytosine triphosphate cytidine triphosphate Child–Turcotte–Pugh score clear to percussion CTPA computed tomographic pulmonary angiography CTPE CT scan for pulmonary embolii CTR carpal tunnel release CTS computed tomography scan carpal tunnel syndrome CTU cancer treatment unit CTx chemotherapy CTX ceftriaxone (a third-generation cephalosporin antibiotic) contractions chemotherapy CTZ Chemoreceptor trigger zone CUC chronic ulcerative colitis CUP cancer of unknown primary origin CV cardiovascular CVA cerebrovascular accident costovertebral angle CVAD central venous access device CVAT costovertebral angle tenderness CVC central venous catheter chronic venous congestion CVD cardiovascular disease CVI cerebrovascular incident CVL central venous line CVP central venous pressure CVS chorionic villus sampling cardiovascular system Cerebrovascular stroke CVID common variable immunodeficiency CVT cerebral venous thrombosis CVVH continuous veno-venous hemofiltration, a short-term alternative to Hemodialysis c/w consistent with CWP coal worker's pneumoconiosis Cx microbiological culture Cx complication Cx cervix CXR chest x-ray (chest radiograph)
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