| Abbreviations | Meaning |
 | CAP | College Of American Pathologists |
 | CAP | Caribbean Association Of Pharmacists |
 | CAPCC | Canadian Association Of Poison Control Centers |
 | CAPHIS | Consumer And Patient Health Information Section [American Library Association] |
 | CAPMR | Canadian Association Of Physical Medicine & Rehabilitation |
 | CAR | Canadian Association Of Radiologists |
 | CATCH | Canadian Association Of Teachers Of Community Health |
 | CB | Coprocessor Board |
 | CBADAA | Certifying Board Of The American Dental Assistants Association |
 | CBIC | Certification Board In Infection Control |
 | CCFPC | Certificant Member, College Of Family Physicians Of Canada |
 | CCMG | Canadian College Of Medical Geneticists |
 | CCNHP | Community College Nursing Home Project |
 | CCS | Canadian Cancer Society |
 | CCS | Canadian Cardiovascular Society |
 | CCSC | Canadian Cardiovascular Society Classification |
 | CCWISB | Canadian Chemical Warfare Inter-Service Board |
 | CDA | Canadian Dental Association |
 | CDS | Christian Dental Society |
 | CEJA | Council On Ethical And Judicial Affairs [American Medical Association] |
 | CFCOT | College Francais Des Chirurgiens Orthopedistes Et Traumatologues |
 | CFPC | College Of Family Physicians Of Canada |
 | CFS | Cystic Fibrosis Society |
 | CGA | Compressed Gas Association |
 | CHA | Canadian Hospital Association |
 | CHA | Catholic Health Association |
 | CHIME | College Of Healthcare Information Management Executives |
 | CHS | Congenital Heart Surgeons Society [study] |
 | CIP | International Foot And Ankle Society |
 | CIRSE | Cardiovascular And Interventional Radiological Society Of Europe |
 | CLMA | Clinical Laboratory Management Association |
 | CMA | Canadian Medical Association |
 | CMB | Central Midwives’ Board |
 | CMB | Carbolic Methylene Blue; Central Midwives' Board; Chloromercuribenzoate |
 | CMBES | Canadian Medical And Biological Engineering Society |
 | CME | Continuing Medical Education (American Medical Association On-Line CME Locator) |
 | CMGS | Chopped Meat-glucose-starch [medium]; Clinical Molecular Genetics Society |
 | CMQ | Collège Des Médecins Du Québec |
 | CMS | Christian Medical Society |
 | CNA | Calcium Nutrient Agar; Canadian Nurses Association; Certified Nursing Assistant |
 | COA | California Orthopaedic Association |
 | COA | Canadian Orthopaedic Association (Canadian Medical Association Affiliates) |
 | COA | Canadian Ophthalmological Association; Canadian Orthopaedic Association; Certificate Of Authority; Cervico-oculo-acusticus [syndrome]; Condition On Admission |
 | COLL | Collateral; Collection, Collective; College; Colloidal |
 | COM | Chronic Otitis Media; College Of Osteopathic Medicine; Component Object Model; Computer-output Microfilm |
 | COS | Canadian Oncology Society |
 | COS | Clinical Orthopaedic Society (AAOS Related Organizations) |
 | COS | Colorado Orthopaedic Society |
 | COS | Carbon Oxysulfide; Cheiro-oral Syndrome; Chief Of Staff; Clinically Observed Seizures; Clinical Orthopaedic Society |
 | COVD | College Of Optometrists In Vision Development |