Medical Branch Alphabet – C
| S. No | Acronyms | Full Form | Short Explanation | Practical Example |
|---|---|---|---|---|
| C001 | CABG | Coronary Artery Bypass Grafting | Surgery to bypass blocked coronary arteries | Used for severe coronary artery disease |
| C002 | CAD | Coronary Artery Disease | Narrowing of coronary arteries | Diagnosed by angiography |
| C003 | CAH | Congenital Adrenal Hyperplasia | Genetic disorder affecting adrenal hormones | Detected in newborn screening |
| C004 | CAL | Calcium Level | Amount of calcium in blood | Monitored in metabolic disorders |
| C005 | CAPD | Continuous Ambulatory Peritoneal Dialysis | Dialysis performed via peritoneal membrane | Used in chronic kidney disease |
| C006 | CAT | Computerized Axial Tomography | Imaging scan using X-rays | CT scan for trauma evaluation |
| C007 | CBC | Complete Blood Count | Measures blood components | Used in routine health check |
| C008 | CBT | Cognitive Behavioral Therapy | Psychological treatment for mental disorders | Used for anxiety or depression |
| C009 | CCU | Coronary Care Unit | ICU level care for cardiac patients | Treats heart attack patients |
| C010 | CD4 | Cluster of Differentiation 4 | Immune cell marker | Used to monitor HIV progression |
| C011 | CDH | Congenital Diaphragmatic Hernia | Birth defect where diaphragm fails to close | Requires neonatal surgery |
| C012 | CEA | Carcinoembryonic Antigen | Tumor marker for cancer screening | Used for colon cancer monitoring |
| C013 | CFM | Cerebral Flow Meter | Measures blood flow to brain | Used in neurology ICU |
| C014 | CGM | Continuous Glucose Monitoring | Real-time blood glucose measurement | Used by insulin-dependent diabetics |
| C015 | CHD | Congenital Heart Disease | Birth defects of the heart | Detected in newborn echo |
| C016 | CHF | Congestive Heart Failure | Cardiac inability to pump blood | Treated in cardiology wards |
| C017 | CHO | Carbohydrate | Macronutrient needed for energy | Used in nutrition planning |
| C018 | CKD | Chronic Kidney Disease | Long-term kidney function loss | Diagnosed by GFR test |
| C019 | CLL | Chronic Lymphocytic Leukemia | Type of blood cancer | Treated in oncology department |
| C020 | CMV | Cytomegalovirus | Viral infection affecting immunocompromised | Screened in transplant patients |
| C021 | CNS | Central Nervous System | Brain and spinal cord | Term used in neurology |
| C022 | COPD | Chronic Obstructive Pulmonary Disease | Long-term lung disease | Common in smokers |
| C023 | CPAP | Continuous Positive Airway Pressure | Non-invasive airway support | Used for sleep apnea |
| C024 | CPR | Cardiopulmonary Resuscitation | Emergency life-saving technique | Performed during cardiac arrest |
| C025 | CRF | Chronic Renal Failure | Progressive kidney dysfunction | Requires dialysis |
| C026 | CRH | Corticotropin Releasing Hormone | Hormone regulating stress response | Measured in endocrine tests |
| C027 | CRP | C-Reactive Protein | Marker of inflammation | Used in infection monitoring |
| C028 | CRT | Cardiac Resynchronization Therapy | Electrical pacing of heart chambers | Used in heart failure |
| C029 | CSF | Cerebrospinal Fluid | Fluid protecting brain & spinal cord | Collected in lumbar puncture |
| C030 | CTN | Calcitonin | Hormone regulating calcium levels | Elevated in thyroid disorders |
| C031 | CVA | Cerebrovascular Accident | Stroke due to lack of blood to brain | Treated in stroke units |
| C032 | CVP | Central Venous Pressure | Pressure in thoracic vena cava | Monitored in critical care |
| C033 | CXR | Chest X-Ray | Radiographic image of chest | Used for pneumonia diagnosis |
| C034 | CYT | Cytology | Study of cells | Used in Pap smear tests |
| C035 | CAB | Community-Acquired Bacteremia | Blood infection acquired outside hospitals | Treated with antibiotics |
| C036 | CADS | Clinical Assessment Decision Support | Automated system for diagnosis | Used in hospital software |
| C037 | CAI | Computer-Assisted Imaging | Technology aided medical imaging | Used in digital radiology |
| C038 | CAM | Complementary and Alternative Medicine | Non-mainstream medical practices | Includes herbal therapy |
| C039 | CAN | Coronary Artery Narrowing | Narrowing of coronary blood vessels | Seen in angioplasty tests |
| C040 | CAR | Chimeric Antigen Receptor | Engineered receptor for cancer therapy | Used in CAR-T cell therapy |
| C041 | CAS | Carotid Artery Stenosis | Narrowing of carotid arteries | Diagnosed by Doppler ultrasound |
| C042 | CAUTI | Catheter-Associated UTI | Urinary infection due to catheter | Prevented by sterile insertion |
| C043 | CAV | Cerebral Arterial Vasospasm | Vessel spasm after brain bleed | Monitored in ICU patients |
| C044 | CBA | Complete Blood Analysis | Full investigation of blood parameters | Done in hematology labs |
| C045 | CBM | Cognitive Brain Mapping | Brain activity analysis | Used in neuroimaging studies |
| C046 | CBR | Clinical Benefit Rate | Cancer trial outcome measure | Used in oncology research |
| C047 | CBS | Central Blood Sampling | Blood sampling from central line | Used in critical care |
| C048 | CCB | Calcium Channel Blocker | Heart/blood pressure medication | Prescribed for hypertension |
| C049 | CCHD | Critical Congenital Heart Disease | Severe form of heart defects | Detected using pulse oximetry |
| C050 | CCI | Cranial Capacity Index | Measurement of skull capacity | Used in anthropology/neurology |
| C051 | CCL | Cervical Cancer Lesion | Precancerous cervical cell growth | Found in Pap smear |
| C052 | CCN | Clinical Care Nurse | Specially trained hospital nurse | Works in ICU |
| C053 | CCO | Cerebral Circulation Output | Blood circulation efficiency to brain | Assessed in neurological exams |
| C054 | CCP | Cyclic Citrullinated Peptide | Autoimmune marker for RA | Used in arthritis diagnosis |
| C055 | CCR | Creatinine Clearance Rate | Estimate of kidney function | Used in nephrology |
| C056 | CCT | Controlled Cord Traction | Third stage labor management | Used in obstetrics |
| C057 | CDF | Cell-Derived Factor | Protein produced by cells | Studied in biology research |
| C058 | CDI | Clostridioides Difficile Infection | Severe intestinal infection | Occurs after long antibiotic use |
| C059 | CDP | Cytidine Diphosphate | Intermediate in nucleotide synthesis | Studied in molecular biology |
| C060 | CER | Comparative Effectiveness Research | Research comparing treatment outcomes | Used in healthcare policy |
| C061 | CES | Cauda Equina Syndrome | Spinal nerve compression emergency | Requires urgent surgery |
| C062 | CET | Clinical Exercise Test | Test measuring exercise response | Used for heart/lung evaluation |
| C063 | CFA | Cell-Free Antibody | Antibody circulating without cells | Used in transplant rejection tests |
| C064 | CFE | Chronic Fatigue Evaluation | Assessment for fatigue disorders | Used in CFS diagnosis |
| C065 | CFF | Critical Flicker Fusion | Vision test measuring flicker perception | Used in neurology |
| C066 | CFG | Cerebral Flow Gradient | Difference in brain blood flow | Measured in brain imaging |
| C067 | CFMG | Clinical Forearm Muscle Grip | Strength measurement tool | Used in physical therapy |
| C068 | CFX | Coagulation Factor X | Clotting factor in blood | Used in hematology |
| C069 | CGF | Concentrated Growth Factor | Platelet-derived healing component | Used in dentistry |
| C070 | CHI | Closed Head Injury | Head trauma without skull fracture | Occurs in road accidents |
| C071 | CHK | Cholesterol Check | Blood test measuring cholesterol | Used in cardiac risk screening |
| C072 | CHL | Chronic Hepatic Lesion | Long-term liver tissue damage | Seen in hepatitis |
| C073 | CHP | Chronic Health Problem | Long-term disease | Used in medical coding |
| C074 | CHS | Cannabinoid Hyperemesis Syndrome | Severe vomiting due to cannabis use | Treated with hot showers/hospital care |
| C075 | CHX | Chlorhexidine | Antiseptic agent | Used for surgical skin prep |
| C076 | CIL | Cardiac Injury Level | Extent of heart tissue damage | Used in MI assessment |
| C077 | CIN | Cervical Intraepithelial Neoplasia | Precancerous cervical changes | Classified as CIN I–III |
| C078 | CIPA | Congenital Insensitivity to Pain | Genetic inability to feel pain | Diagnosed in childhood |
| C079 | CIPD | Chronic Inflammatory Demyelinating Polyneuropathy | Long-term nerve disorder | Treated with IVIG |
| C080 | CIS | Carcinoma In Situ | Early-stage cancer | Treated before progression |
| C081 | CKM | Creatine Kinase-MB | Heart muscle enzyme | Elevated in MI |
| C082 | CLABSI | Central Line Associated Bloodstream Infection | Infection from central catheter | Prevented with sterile technique |
| C083 | CLD | Chronic Lung Disease | Long-term respiratory impairment | Seen in COPD |
| C084 | CLE | Cutaneous Lupus Erythematosus | Autoimmune skin disease | Treated by dermatology |
| C085 | CLI | Critical Limb Ischemia | Severe limb artery obstruction | Can require amputation |
| C086 | CLP | Cleft Lip and Palate | Facial birth defect | Corrected with surgery |
| C087 | CLS | Capillary Leak Syndrome | Plasma leakage from capillaries | Medical emergency |
| C088 | CLT | Cognitive Learning Therapy | Therapy to improve cognitive skills | Used in dementia care |
| C089 | CMA | Certified Medical Assistant | Clinical support professional | Works with physicians |
| C090 | CMC | Carboxymethylcellulose | Thickener used in medical gels | Used in eye drops |
| C091 | CMD | Congenital Muscular Dystrophy | Genetic muscle disorder | Diagnosed in infancy |
| C092 | CME | Continuing Medical Education | Mandatory education for doctors | Required for license renewal |
| C093 | CMG | Clinical Myasthenia Gravis | Autoimmune neuromuscular disorder | Diagnosed with tensilon test |
| C094 | CML | Chronic Myeloid Leukemia | Blood cancer affecting bone marrow | Treated with imatinib |
| C095 | CMP | Comprehensive Metabolic Panel | Blood test analyzing multiple chemicals | Used in general evaluation |
| C096 | CMS | Centers for Medicare & Medicaid Services | US healthcare regulatory agency | Sets coding guidelines |
| C097 | CMT | Charcot-Marie-Tooth Disease | Genetic nerve disorder | Causes muscle weakness |
| C098 | CMVIG | Cytomegalovirus Immune Globulin | Antibody treatment for CMV | Used in transplant patients |
| C099 | CNF | Cranial Nerve Function | Assessment of cranial nerves | Used in neurological exam |
| C100 | CNG | Cardiac Nerve Gradient | Variation in nerve signals in heart | Measured in electrophysiology |
| S. No | Acronyms | Full Form | Short Explanation | Practical Example |
|---|---|---|---|---|
| C101 | CIE | Complement Immune Enhancement | Immune response boosted by complement activation | Used in autoimmune disease studies |
| C102 | CIL | Chronic Inflammatory Lesion | Long-term localized inflammation | Seen in chronic gum infections |
| C103 | CIMT | Carotid Intima-Media Thickness | Ultrasound measure of carotid artery wall | Used to assess stroke risk |
| C104 | CIPF | Chronic Idiopathic Pulmonary Fibrosis | Progressive lung scarring without known cause | Treated with antifibrotic drugs |
| C105 | CIPC | Chemotherapy-Induced Peripheral Changes | Neurological changes caused by chemotherapy | Tingling in hands after chemo |
| C106 | CIR | Cardiac Injury Response | Heart’s reaction to physical damage | Observed after heart attacks |
| C107 | CISD | Critical Incident Stress Debriefing | Psychological support process after trauma | Used for paramedic mental health |
| C108 | CISC | Clean Intermittent Self-Catheterization | Self-inserted catheter technique | Used in neurogenic bladder management |
| C109 | CITH | Congenital Immune Thrombocytopenia | Low platelet count in newborns | Diagnosed immediately after birth |
| C110 | CITS | Critical Illness Trauma Syndrome | Systemic response to severe trauma | Seen in ICU trauma cases |
| C111 | CIV | Cerebral Ischemic Volume | Size of brain area affected by ischemia | Measured on MRI after stroke |
| C112 | CIVA | Controlled Intravenous Analgesia | Patient-controlled pain relief method | Used post-surgery |
| C113 | CIWS | Clinical Immunology Workup Set | Panel of immune function tests | Used for immunodeficiency diagnosis |
| C114 | CJF | Craniojugular Fossa | Anatomical area near skull base | Evaluated in ENT surgery |
| C115 | CKMBI | CK-MB Index | Marker to differentiate heart vs. skeletal muscle injury | Used in AMI diagnosis |
| C116 | CLABSI | Central-Line–Associated Bloodstream Infection | Infection from central venous catheter | Major ICU complication |
| C117 | CLC | Chemotherapy Line Clearance | Protocol to clear drug residue | Ensures patient safety |
| C118 | CLD | Chronic Lung Disease | Long-lasting lung dysfunction | Seen in smokers and premature infants |
| C119 | CLIM | Chronic Lymphocytic Inflammation Marker | Indicator of long-term lymphoid inflammation | Used in lymphoma management |
| C120 | CLIP | Clinical Immunophenotyping Panel | Blood test to identify immune cell types | Used in leukemia classification |
| C121 | CLIVUS | Cranial Clivus Area | Sloped bony portion of skull base | Examined in neurosurgery |
| C122 | CLM | Cerebral Lymphatic Mapping | Imaging of lymphatic drainage of brain | New research technique |
| C123 | CLSC | Clinical Laboratory Support Center | Lab operations support unit | Handles sample management |
| C124 | CLTI | Chronic Limb-Threatening Ischemia | Severe leg artery blockage | Requires urgent vascular surgery |
| C125 | CLV | Cerebral Lesion Volume | Total brain lesion size | Quantified on MRI |
| C126 | CMAP | Compound Muscle Action Potential | Electrical muscle response measurement | Used in neuromuscular testing |
| C127 | CMBI | Cell Membrane Binding Index | Measure of receptor-binding strength | Used in pharmacology |
| C128 | CMCJ | Carpometacarpal Joint | Thumb joint used for gripping | Often affected by arthritis |
| C129 | CMDD | Chronic Metabolic Dysfunction Disorder | Persistent metabolic imbalance | Seen in diabetes |
| C130 | CMEF | Clinical Medical Examination Form | Standard patient exam form | Used in hospitals |
| C131 | CMET | Clinical Metabolomics Testing | Lab analysis of metabolic compounds | Used for metabolic disorders |
| C132 | CMF | Cranio-Maxillofacial | Head and face surgical specialty | Used in trauma reconstruction |
| C133 | CMFS | Cranio-Maxillofacial Surgery | Surgery of facial bones | Treats fractures or deformities |
| C134 | CMI | Cerebral Microinfarct | Tiny stroke-like brain lesion | Found on high-resolution MRI |
| C135 | CMLA | Chronic Myeloid Leukemia Accelerated Phase | Intermediate stage of CML | Requires aggressive therapy |
| C136 | CMMD | Congenital Multisystem Malformation Disorder | Multiple organ birth defects | Diagnosed via genetic testing |
| C137 | CMME | Clinical Molecular Medicine Evaluation | Detailed genetic and molecular analysis | Used for rare diseases |
| C138 | CMMS | Clinical Medication Management System | Digital system for medication tracking | Used in pharmacies |
| C139 | CMN | Congenital Melanocytic Nevus | Pigmented birthmark | May require monitoring |
| C140 | CMNS | Clinical Mass Neuron Scan | Advanced brain neuron imaging | Used in neurodegenerative studies |
| C141 | CMPD | Chronic Myeloproliferative Disease | Bone marrow overproduction disorder | Includes polycythemia |
| C142 | CMPV | Cardiomyopathy Variant | Genetic mutation causing heart weakness | Identified by genetic testing |
| C143 | CMRA | Cardiovascular Magnetic Resonance Angiography | MRI scan of blood vessels | Used to assess stenosis |
| C144 | CMSA | Clinical Musculoskeletal Assessment | Exam of bones & joints | Used in ortho clinics |
| C145 | CMSF | Cerebrospinal Meningeal Fluid | Protects brain and spinal cord | Collected via lumbar puncture |
| C146 | CMTI | Chronic Musculoskeletal Tissue Injury | Long-term joint/muscle damage | Seen in sports injuries |
| C147 | CMTS | Clinical Medical Training System | Structure of medical training programs | Used in hospitals |
| C148 | CNAP | Continuous Non-Invasive Arterial Pressure | BP monitoring without catheter | Used in anesthesia |
| C149 | CNBP | Central Neural Blood Pressure | Blood pressure controlled by CNS | Studied in neurocardiology |
| C150 | CNCV | Cranial Nerve Conduction Velocity | Determines nerve signal speed | Used in nerve injury testing |
| C151 | CND | Clinical Nutritional Deficiency | Lack of essential nutrients | Seen in malnutrition |
| C152 | CNDP | Congenital Neurological Developmental Problem | Birth-related neurological deficits | Detected in infants |
| C153 | CNFT | Clinical Neurofunctional Test | Tests brain & nerve function | Used in epilepsy |
| C154 | CNGF | Chronic Neutrophil Growth Factor | Protein promoting neutrophil growth | Used in hematology |
| C155 | CNHL | Central Nervous Hearing Loss | Brain-related hearing impairment | Identified via audiology |
| C156 | CNIM | Clinical Neurophysiology Intraoperative Monitoring | Monitoring nerves during surgery | Prevents nerve damage |
| C157 | CNIS | Central Nervous Immune Syndrome | Immune issues inside CNS | Seen in viral infections |
| C158 | CNLS | Clinical Neonatal Life Support | Life-saving care for newborns | Used in delivery rooms |
| C159 | CNMI | Chronic Neuro-Muscular Impairment | Long-term muscle-nerve dysfunction | Seen in ALS |
| C160 | CNNP | Chronic Neuropathic Pain | Persistent nerve-related pain | Treated with nerve agents |
| C161 | CNPF | Clinical Nasopharyngeal Fluid | Sample from nasal cavity | Used for viral testing |
| C162 | CNPG | Clinical Neoplasm Progression Grade | Tumor severity grade | Used in oncology |
| C163 | CNPV | Cardiovascular Nitric Pressure Value | Measure of nitric oxide influence on BP | Research measurement |
| C164 | CNR | Contrast Noise Ratio | Image clarity indicator | Used in radiology |
| C165 | CNSC | Central Nervous System Complication | Complication affecting brain/spine | Occurs in meningitis |
| C166 | CNSF | Clinical Nervous System Functioning | Exam of brain and nerve function | Used in neurology |
| C167 | CNSI | Chronic Neurosensory Impairment | Long-term loss of sensory function | Seen in diabetic neuropathy |
| C168 | CNSS | Central Nervous Support System | Physiological systems supporting CNS | Included in anatomy |
| C169 | CNT | Connective Tissue | Tissue that supports other tissues | Found throughout body |
| C170 | CNVR | Clinical Nerve Recovery | Healing progress of nerves | Post-surgery monitoring |
| C171 | COA | Coarctation of Aorta | Aortic narrowing | Corrected via surgery |
| C172 | COCP | Combined Oral Contraceptive Pill | Hormonal birth control pill | Prevents pregnancy |
| C173 | CODA | Chemical Oxygen Demand Assay | Lab test for oxygen consumption | Used in biochemical labs |
| C174 | COHb | Carboxyhemoglobin | Carbon monoxide–bound hemoglobin | Seen in CO poisoning |
| C175 | COI | Continuity of Injury | Pattern of ongoing tissue damage | Used in forensic reports |
| C176 | COL | Cardiac Output Level | Measure of heart pumping efficiency | Used in ICU |
| C177 | COMBI | Combination Immunotherapy | Multi-agent immune treatment | Used in cancer therapy |
| C178 | COMP | Cartilage Oligomeric Matrix Protein | Biomarker for cartilage degeneration | Used in arthritis assessment |
| C179 | CONA | Conjunctival Angioma | Benign eye blood vessel tumor | Diagnosed via eye exam |
| C180 | CONP | Clinical Optic Nerve Pressure | Pressure on optic nerve | Seen in glaucoma |
| C181 | COP | Community-Oriented Psychiatry | Psychiatry focusing on community support | Used in mental health programs |
| C182 | COPE | Clinical Opioid Prescribing Evaluation | Assessment of controlled opioid use | Used in pain management |
| C183 | COPR | Chronic Obstructive Pulmonary Response | Lung response in COPD | Measured in pulmonary clinics |
| C184 | COS | Clinical Ophthalmic Screening | Eye health check | Used for vision disorders |
| C185 | COT | Carbon Oxidation Therapy | Detoxification therapy | Used in alternative medicine |
| C186 | COV | Clinical Outcome Value | Overall treatment effectiveness | Used in health evaluation |
| C187 | CPAD | Child Psychiatry Assessment & Diagnosis | Diagnostic framework for child mental health | Used by psychiatrists |
| C188 | CPAL | Continuous Positive Airflow Level | Airflow pressure in respiratory devices | Used in sleep apnea |
| C189 | CPAPD | CPAP Device | Device providing positive airway pressure | Used at home for apnea |
| C190 | CPBF | Cerebral Perfusion Blood Flow | Brain blood flow volume | Measured via CT perfusion |
| C191 | CPES | Clinical Psychological Evaluation Scale | Mental health assessment tool | Used in counseling |
| C192 | CPF | Chronic Pulmonary Fibrosis | Long-term lung fibrosis | Requires long-term therapy |
| C193 | CPGS | Clinical Practice Guidelines Set | Standard medical guidelines | Used in hospitals |
| C194 | CPH | Cephalization | Brain-to-body ratio | Studied in embryology |
| C195 | CPIA | Cardiopulmonary Imaging Assessment | Combined heart-lung imaging | Used in trauma |
| C196 | CPC | Cerebral Perfusion Capacity | Brain’s ability to receive blood | Studied in stroke |
| C197 | CPRT | Cardiopulmonary Resuscitation Training | CPR teaching program | Used for BLS certification |
| C198 | CPSI | Clinical Pain Sensitivity Index | Measure of pain perception | Used in pain clinics |
| C199 | CPSP | Chronic Post-Surgical Pain | Long-lasting pain after surgery | Seen after amputations |
| C200 | CPTL | Clinical Platelet Level | Platelet count measurement | Used in blood tests |



