ICD – 10: International Classification of Diseases which is the 10 th revision Procedure Coding System. ICD – 10 codes are alphanumeric codes used for diagnoses. Every disease whole sale bud products, disorder, injury, infection and physiological symptom has its own ICD-10 code. CPT: Current Procedural Terminology: This is a procedural code and is used for reporting medical, diagnostic and surgical services provided by health care professionals. They are also used to track important health data and measure performance and efficiency. Majority of the codes are numeric in nature. HCPCS: Healthcare Common Procedure Coding System. The main aim of this system is to ensure accurate, consistent billing and processing of insurance claims. HCPCS codes are mainly used for billing and identify items and non-physician based services such as ambulance services, prosthetic devices. CPC: (Certified Professional Coder) is a certification that is awarded by AAPC (American Academy for Professional Coders) and is the most recognized credential worldwide. In most countries like USA, Middle East, UK etc. it is mandatory to clear the CPC exam in order to get a job. In India, it is possible to get a job without CPC certification but salaries slabs are lower than that of CPC certified medical coders.