Introduction to Medical Coding: Medical coding is the process of transforming healthcare processes, diagnoses, and instruments into alphanumeric forms to make them globally accepted. Medical coders can transform this data with the help of healthcare provider’s documents. A medical coder should refer to the medical reports, surgical reports, and test reports of a patient should be considered. All the details from the patient will be coded with a unique code. This code will play a crucial role in future treatment of the patient.