Medical Branch Alphabet – C
| S. No | Abbreviations | Full Form | Short Explanation | Practical Example |
|---|---|---|---|---|
| C001 | CA | Cancer | Uncontrolled growth of abnormal cells | Oncology diagnosis |
| C002 | CAA | Cerebral Amyloid Angiopathy | Amyloid buildup in brain blood vessels | Dementia assessment |
| C003 | CAB | Coronary Artery Bypass | Heart blood vessel graft surgery | Cardiac surgery |
| C004 | CAC | Coronary Artery Calcium | Calcium score showing plaque | Heart CT scan |
| C005 | CAD | Coronary Artery Disease | Blockage of heart arteries | Cardiology |
| C006 | CAE | Childhood Absence Epilepsy | Seizure disorder in children | Neurology |
| C007 | CAF | Cerebral Arterial Flow | Blood flow in brain arteries | Doppler study |
| C008 | CAG | Coronary Angiogram | Imaging of coronary vessels | Cardiac catheterization |
| C009 | CAH | Congenital Adrenal Hyperplasia | Hormonal disorder from birth | Endocrinology |
| C010 | CAI | Catheter-Associated Infection | Infection due to catheter use | Hospital infection control |
| C011 | CAJ | Cervical Adjacent Joint | Joint next to cervical vertebrae | Spine assessment |
| C012 | CAK | Calcium Kidney | Calcium deposition in kidneys | Nephrology |
| C013 | CAL | Calcium Level | Amount of calcium in blood | Electrolyte test |
| C014 | CAM | Complementary & Alternative Medicine | Non-conventional treatments | Acupuncture use |
| C015 | CAN | Cancer Associated Neutrophils | Immune cells involved in cancer | Oncology research |
| C016 | CAO | Chronic Airway Obstruction | Long-term airway blocking | COPD diagnosis |
| C017 | CAP | Community-Acquired Pneumonia | Pneumonia acquired outside hospitals | ER treatment |
| C018 | CAQ | Cardiac Arrest Quotient | Index for arrest severity | Emergency medicine |
| C019 | CAR | C-Reactive Protein | Inflammation marker | Infection evaluation |
| C020 | CAS | Carotid Artery Stenosis | Narrowing of carotid artery | Stroke assessment |
| C021 | CAT | Computerized Axial Tomography | CT scan imaging | Radiology |
| C022 | CAU | Carcinoembryonic Antigen Unit | Tumor marker unit | Oncology |
| C023 | CAV | Cerebral Arterial Vasospasm | Sudden artery narrowing in brain | Neurosurgery |
| C024 | CAW | Chest Airway Width | Diameter of airway | Pulmonology imaging |
| C025 | CAX | Cardiac Axis | Heart’s electrical orientation | ECG interpretation |
| C026 | CAY | Calcium Assay Yield | Output of calcium test | Metabolic panel |
| C027 | CAZ | Cefazolin | Antibiotic medication | Infection treatment |
| C028 | CB | Complete Blood | Refers to CBC test | Routine blood tests |
| C029 | CBA | Cord Blood Analysis | Testing newborn’s cord blood | Neonatal care |
| C030 | CBB | Chronic Back Blockage | Persistent spinal obstruction | Orthopedic diagnosis |
| C031 | CBC | Complete Blood Count | Evaluation of blood cells | General checkup |
| C032 | CBD | Common Bile Duct | Duct carrying bile | Abdominal ultrasound |
| C033 | CBE | Clinical Breast Exam | Physical exam of breasts | Cancer screening |
| C034 | CBF | Cerebral Blood Flow | Brain blood circulation | Stroke evaluation |
| C035 | CBG | Capillary Blood Glucose | Fingerstick glucose test | Diabetes monitoring |
| C036 | CBH | Chronic Brain Hypoxia | Long-term low oxygen to brain | Neurology |
| C037 | CBI | Continuous Bladder Irrigation | Saline flushing of bladder | Urology post-surgery |
| C038 | CBJ | Cerebral Bone Junction | Skull–brain boundary | Neuroanatomy |
| C039 | CBK | Carotid Body Kinase | Enzyme in carotid body | Physiology research |
| C040 | CBL | Cortical Bone Loss | Loss of hard bone tissue | Osteoporosis |
| C041 | CBM | Congenital Brain Malformation | Brain defect present at birth | Pediatrics |
| C042 | CBN | Childhood Behavioral Neuroscience | Study of brain in behavior | Psychology |
| C043 | CBO | Chronic Bowel Obstruction | Long-term intestinal blockage | GI emergencies |
| C044 | CBP | Cerebral Blood Pressure | Pressure inside brain vessels | ICU monitoring |
| C045 | CBQ | Cardiac Beat Quality | Quality of heartbeats | ECG evaluation |
| C046 | CBR | Chemical Brain Response | Brain reaction to chemicals | Pharmacology |
| C047 | CBS | Chronic Bone Syndrome | Long-term bone weakness | Orthopedics |
| C048 | CBT | Cognitive Behavioral Therapy | Psychological therapy | Anxiety treatment |
| C049 | CBU | Chronic Bronchitis Unit | Measurement for bronchitis severity | Pulmonology |
| C050 | CBV | Cerebral Blood Volume | Volume of blood in brain | CT perfusion |
| C051 | CBW | Cell Body Weight | Weight of a cell | Cellular biology |
| C052 | CBX | Cerebral Bone X-ray | Imaging of skull bone | Radiology |
| C053 | CBY | Canine Bacterial Yield | Bacteria growth measure (vet) | Veterinary labs |
| C054 | CBZ | Carbamazepine | Anti-seizure medication | Epilepsy treatment |
| C055 | CC | Chief Complaint | Primary patient concern | Medical history |
| C056 | CCA | Cervical Cancer Assessment | Diagnostic screening of cervix | Pap smear |
| C057 | CCB | Calcium Channel Blocker | Heart and BP medication | Hypertension |
| C058 | CCC | Complete Cancer Clearance | Full removal of cancer cells | Oncologic surgery |
| C059 | CCD | Central Cord Defect | Abnormality of spinal cord center | Spine MRI |
| C060 | CCE | Cardiac Contractile Efficiency | Heart muscle performance | Cardiology tests |
| C061 | CCF | Congestive Cardiac Failure | Heart unable to pump properly | Heart failure |
| C062 | CCG | Cranial Cerebrospinal Gradient | CSF pressure gradient | Neurosurgery |
| C063 | CCH | Chronic Cluster Headache | Severe cyclic headaches | Neurology |
| C064 | CCI | Cervical Spine Injury | Trauma to neck vertebrae | ER evaluation |
| C065 | CCJ | Cervico-Cranial Junction | Head–neck transitional region | Neurosurgery |
| C066 | CCK | Cholecystokinin | Digestive hormone | GI physiology |
| C067 | CCL | Cytotoxic Chemotherapy Level | Strength of chemotherapeutic dose | Oncology |
| C068 | CCM | Cardiac Conduction Map | Electrical mapping of heart | EP studies |
| C069 | CCN | Chronic Cognitive Neurodegeneration | Long-term brain decline | Dementia |
| C070 | CCO | Cardiac Output | Amount of blood pumped/min | Hemodynamics |
| C071 | CCP | Citrullinated Peptide | Autoimmune rheumatoid marker | RA testing |
| C072 | CCQ | Cardiac Cycle Quotient | Heart cycle index | Physiology |
| C073 | CCR | Creatinine Clearance Rate | Kidney filtration efficiency | Nephrology |
| C074 | CCS | Cancer Clinical Staging | Classifying cancer severity | Oncology |
| C075 | CCT | Cranial CT | CT scan of skull/brain | ER trauma scan |
| C076 | CCU | Coronary Care Unit | Specialized heart ICU | Critical care |
| C077 | CCV | Cerebral Capillary Volume | Volume of brain capillaries | Neuroimaging |
| C078 | CCW | Chest Wall | Structure of thoracic wall | Respiratory exam |
| C079 | CCX | Cardiac Cortex | Outer layer of heart | Medical anatomy |
| C080 | CCY | Cholesterol Cycle Yield | Cholesterol metabolism output | Lipidology |
| C081 | CCZ | Cervical Canal Zone | Area inside cervical spine | MRI evaluation |
| C082 | CD | Communicable Disease | Infectious diseases | Public health |
| C083 | CDA | Chronic Disease Assessment | Screening for long-term diseases | Preventive medicine |
| C084 | CDB | Complete Drug Blockade | Full blockage by a drug | Pharmacology |
| C085 | CDC | Centers for Disease Control | U.S. public health agency | Epidemiology |
| C086 | CDD | Chronic Digestive Disorder | Long-term digestive issue | GI clinic |
| C087 | CDE | Controlled Diet Evaluation | Assessing diet control | Nutrition therapy |
| C088 | CDF | Clostridium Difficile | Infection-causing bacteria | Hospital infection |
| C089 | CDG | Cerebral Deep Gray | Brain deep gray matter | Neuroanatomy |
| C090 | CDH | Congenital Diaphragmatic Hernia | Birth defect in diaphragm | NICU care |
| C091 | CDI | C. Difficile Infection | Infectious diarrhea condition | Gastroenterology |
| C092 | CDJ | Chronic Disc Joint | Long-term disc joint issues | Orthopedics |
| C093 | CDK | Cyclin-Dependent Kinase | Protein that regulates cell cycle | Cancer biology |
| C094 | CDL | Chronic Drug Level | Long-term concentration of a drug | Toxicology |
| C095 | CDM | Chronic Disease Management | Managing long-term conditions | Primary care |
| C096 | CDN | Central Drug Nervous | Drug acting on CNS | Neurology |
| C097 | CDO | Clinical Decision Order | Medical order based on decision | EMR entry |
| C098 | CDP | Cytidine Diphosphate | Component of DNA/RNA synthesis | Biochemistry |
| C099 | CDQ | Cardiac Demand Quotient | Index of heart oxygen demand | Cardiology |
| C100 | CDR | Clinical Dementia Rating | Assessment of dementia severity | Alzheimer’s evaluation |
| S. No | Abbreviation | Full Form | Short Explanation | Practical Example |
|---|---|---|---|---|
| C101 | CNL | Clinical Nurse Leader | Advanced nursing role focused on care coordination | Assigned in hospitals for patient-care management |
| C102 | CNS | Central Nervous System | Brain and spinal cord | Stroke affects the CNS |
| C103 | CO | Cardiac Output | Blood volume pumped by heart per minute | Measured in cardiac testing |
| C104 | COAD | Chronic Obstructive Airways Disease | Airway-limiting respiratory condition | Diagnosed in smokers |
| C105 | COB | Coordinated of Benefits | Insurance process to avoid duplicate payments | Used in medical billing |
| C106 | COPD | Chronic Obstructive Pulmonary Disease | Progressive lung disease | Patient uses inhalers daily |
| C107 | COR | Coronary | Relating to heart arteries | COR disease assessment |
| C108 | CP | Chest Pain | Pain/discomfort in the chest area | Documented in triage |
| C109 | CPA | Cardiopulmonary Arrest | Complete cessation of heart and breathing | CPR initiated |
| C110 | CPB | Cardiopulmonary Bypass | Machine to oxygenate blood during surgery | Required for open-heart surgery |
| C111 | CPD | Cephalopelvic Disproportion | Fetal head too large for maternal pelvis | Leads to C-section |
| C112 | CPE | Congestive Pulmonary Edema | Fluid accumulation in lungs | Requires urgent treatment |
| C113 | CPF | Controlled Positive Filtration | Air filtration technique | Used in isolation wards |
| C114 | CPK | Creatine Phosphokinase | Enzyme elevated in muscle injury | Ordered in MI evaluation |
| C115 | CPR | Cardiopulmonary Resuscitation | Emergency life-saving technique | Performed during cardiac arrest |
| C116 | CPS | Child Protective Services | Government child welfare agency | Hospital reports child abuse |
| C117 | CPU | Chest Pain Unit | Specialized care unit for cardiac evaluation | Hospital emergency services |
| C118 | CR | Creatinine | Kidney function indicator | Included in routine labs |
| C119 | CRF | Chronic Renal Failure | Long-term kidney dysfunction | Leads to dialysis |
| C120 | CRI | Chronic Renal Insufficiency | Early kidney impairment | Managed with medications |
| C121 | CRN | Certified Registered Nurse | Licensed professional nurse | Works in hospital care |
| C122 | CRT | Cardiac Resynchronization Therapy | Treatment for heart failure | Device implanted |
| C123 | CS | Cesarean Section | Surgical childbirth procedure | Performed due to complications |
| C124 | CSA | Central Sleep Apnea | Sleep condition with absent breathing effort | Treated with CPAP |
| C125 | CSD | Chronic Skin Disease | Long-standing dermatological issue | Eczema treatment |
| C126 | CSF | Cerebrospinal Fluid | Fluid around brain/spine | Collected via lumbar puncture |
| C127 | CSH | Congenital Syphilis | Syphilis passed from mother to infant | Requires early treatment |
| C128 | CSI | Clinical Skills Instructor | Trainer for medical skills | Works in nursing schools |
| C129 | CSO | Chief Security Officer | Ensures safety of medical facilities | Hospital administration |
| C130 | CSP | Certified Surgical Technologist | Operating-room assistant | Supports surgical teams |
| C131 | CSR | Central Supply Room | Medical equipment storage | Manages sterile supplies |
| C132 | CST | Certified Surgical Technologist | Operates equipment during surgery | Assists surgeons |
| C133 | CT | Computed Tomography | Imaging that uses X-rays | CT scan for brain injury |
| C134 | CTA | Computed Tomography Angiography | CT of blood vessels | Used in stroke diagnosis |
| C135 | CTG | Cardiotocography | Fetal monitoring test | Used during labor |
| C136 | CTL | Cytotoxic T Lymphocyte | Immune cell that destroys infected cells | Oncology treatments |
| C137 | CTP | Carpal Tunnel Pressure | Measures nerve compression | Assessing CTS severity |
| C138 | CTR | Carpal Tunnel Release | Surgery to relieve nerve pressure | Performed for severe CTS |
| C139 | CTS | Carpal Tunnel Syndrome | Hand nerve compression condition | Causes numbness/tingling |
| C140 | CU | Containment Unit | Isolation for infectious cases | Used during outbreaks |
| C141 | CUI | Chronic Urinary Incontinence | Persistent involuntary urination | Elderly patient care |
| C142 | CVD | Cardiovascular Disease | Heart and vessel disorders | Number one global killer |
| C143 | CVI | Chronic Venous Insufficiency | Poor vein function in legs | Causes swelling/ulcers |
| C144 | CVP | Central Venous Pressure | Pressure in thoracic vena cava | ICU monitoring |
| C145 | CVR | Cerebrovascular Resistance | Brain blood-flow resistance | Neurological assessment |
| C146 | CVS | Cardiovascular System | Heart and blood vessels network | Discussed in physiology |
| C147 | CVT | Cerebral Venous Thrombosis | Clot in brain veins | Emergency condition |
| C148 | CW | Chest Wall | External thoracic structure | Pain documented as CW pain |
| C149 | CWI | Clean Wound Irrigation | Cleaning a wound with sterile solution | Surgical protocol |
| C150 | CX | Cervix | Lower part of uterus | Examined in gynecology |
| C151 | CXR | Chest X-Ray | Radiographic image of chest | Used for pneumonia diagnosis |
| C152 | CYD | Cytidine | Nucleoside used in DNA metabolism | Used in lab testing |
| C153 | CYP | Cytochrome P450 | Enzyme group for drug metabolism | Drug-interaction assessment |
| C154 | CZP | Certolizumab Pegol | Biologic medication | Used for autoimmune disease |
| C155 | CLC | Chronic Liver Cirrhosis | End-stage liver disease | Requires transplant evaluation |
| C156 | CIM | Cervical Intraepithelial Neoplasia | Abnormal cervical cells | Detected via Pap test |
| C157 | CED | Chronic Eye Disease | Long-term ocular condition | Glaucoma monitoring |
| C158 | CML | Chronic Myeloid Leukemia | Bone marrow cancer | Treated with targeted therapy |
| C159 | CMPA | Cow’s Milk Protein Allergy | Immune reaction to milk proteins | Infant feeding issue |
| C160 | CMC | Carboxymethyl Cellulose | Thickening agent used in meds | Used in eyedrops |
| C161 | COX | Cyclooxygenase | Enzyme targeted by NSAIDs | Pain reliever mechanism |
| C162 | CGI | Clinical Global Impression | Severity rating scale | Used in psychiatry |
| C163 | CHG | Chlorhexidine Gluconate | Antiseptic solution | Used in surgical prep |
| C164 | CCT | Cold Chain Temperature | Required storage temperature for vaccines | Vaccine transport |
| C165 | CPET | Cardiopulmonary Exercise Testing | Measures exercise capacity | Used in cardiac rehab |
| C166 | CWB | Complete Whole Blood | Non-separated donated blood | Transfusions |
| C167 | CCI | Coronary Calcium Index | Measures arterial calcification | Heart risk screening |
| C168 | CUM | Cumulative Dose | Total exposure of drug/radiation | Oncology treatment |
| C169 | C2 | Cervical Vertebra 2 | Second vertebra in neck | Spine injury code |
| C170 | CMCJ | Carpometacarpal Joint | Thumb joint | Orthopedic documentation |
| C171 | CFT | Complement Fixation Test | Detects antibodies | Used in infections |
| C172 | CIB | Chronic Inflammatory Bowel | Long-term digestive inflammation | Crohn’s disease |
| C173 | CSM | Circulatory Sensory Motor | Evaluation of limb function | Trauma assessment |
| C174 | CIBD | Chronic Inflammatory Bowel Disease | Digestive tract inflammation | IBD management |
| C175 | CWS | Cold Weather Syndrome | Body stress from cold | Military medicine |
| C176 | COG | Cognition Score | Evaluation of mental function | Dementia assessment |
| C177 | CBU | Cord Blood Unit | Stored umbilical cord blood | Transplant programs |
| C178 | CBI | Continuous Bladder Irrigation | Used to prevent blood clots in bladder | Post-surgery care |
| C179 | CEV | Corpuscular Erythrocyte Volume | Red blood cell size | Hematology |
| C180 | CTE | Chronic Traumatic Encephalopathy | Brain degeneration from repeated trauma | Sports medicine |
| C181 | CFS | Chronic Fatigue Syndrome | Persistent fatigue disorder | Clinical diagnosis |
| C182 | CEDH | Chronic Epidural Hematoma | Blood clot outside brain | Neurosurgical emergency |
| C183 | CBA | Chemical Biological Agent | Toxic exposure agents | Disaster medicine |
| C184 | CBO | Chronic Bowel Obstruction | Long-term intestinal blockage | Surgery required |
| C185 | CCD | Coronary Care Department | Specialized cardiac unit | Heart failure care |
| C186 | CBRN | Chemical Biological Radiological Nuclear | Hazard category | Emergency response |
| C187 | CDU | Clinical Decision Unit | Short-stay assessment ward | Emergency care |
| C188 | CET | Clinical Evaluation Tool | Assessment tool for students | Nursing training |
| C189 | CFSR | Clinical Fetal Surveillance Report | Fetal monitoring record | Obstetrics |
| C190 | CIPC | Chronic Interstitial Pulmonary Condition | Long-term lung inflammation | Pulmonology |
| C191 | CFTS | Congenital Foot Talus Syndrome | Pediatric deformity | Orthopedic care |
| C192 | CXR-P | Chest X-Ray – Portable | Bedside radiography | ICU patients |
| C193 | CWH | Chronic Wound Healing | Long-term wound management | Diabetes care |
| C194 | CAMI | Coronary Acute Myocardial Infarction | Heart attack category | Emergency diagnosis |
| C195 | CADS | Coronary Artery Disease Syndrome | Cluster of CAD symptoms | Cardiology |
| C196 | CLOT | Clotting Observation Test | Measures coagulation | Hematology |
| C197 | CRMS | Chronic Respiratory Management System | Monitoring lung function | COPD management |
| C198 | CDR | Clinical Data Registry | Patient outcome database | Research & quality control |
| C199 | CMM | Chronic Muscle Myopathy | Long-term muscle disease | Neuromuscular clinics |
| C200 | CNR | Certified Neuroscience Registered Nurse | Specialized neuro-care nurse | Works in stroke units |



