Describe the structure of ICD-10 codes

Understanding the Structure of ICD-10 Codes: A Guide for Aspiring Medical Coding Specialists


ICD-10 codes are vital for medical billing, diagnosis categorization, and health data management. Here's a breakdown of their structure, which is important for anyone pursuing Medical Coding Specialist Training in Trivandrum:


1. Format: ICD-10 codes comprise 3 to 7 characters. The first character is always a letter, followed by numbers and letters.

2. First Character: A letter that symbolizes the chapter of the disease or condition (e.g., A for infectious diseases).

3. Second Character: Usually a number that refines the classification of the diagnosis.

Medical Coding Specialist Training in Trivandrum
Medical Coding

4. Third Character: Further defines the specificity of the disease and gives additional information.

5. Fourth to Sixth Characters: These characters are more specific, for example, the location, severity, or cause of the condition.

6. Seventh Character: This is optional but is very important for some diagnoses, indicating the stage, location, or type of care, for example, initial or subsequent treatment.

7. Modifiers: ICD-10 codes may include modifiers that offer even more specificity, such as laterality or complications.


Those interested in medical coding can achieve success by being clear about ICD-10 code structure. Basic skills are taught in Medical Coding Specialist Training in Trivandrum on such standards of coding and many other topics.


ICD-10 helps the coder in a huge way. Become a medical coder to enhance your life in a real way. Start now by taking part in Medical Coding Specialist Training in Trivandrum.

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