Medical Coding Practice Test

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Prepare for the Medical Coding Test with our comprehensive practice exams. Test your knowledge with multiple-choice questions and detailed explanations. Excel in your exam!

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Who primarily uses M codes in ICD-9-CM?

Physicians in clinical settings
Health insurance companies
Cancer registries
Government health agencies

The correct answer is: Cancer registries

Cancer registries primarily use M codes in ICD-9-CM. M codes in ICD-9-CM are specifically designed to classify neoplasms (tumors) and are crucial for cancer registries to track and analyze cancer data. Physicians in clinical settings may use M codes as well, but the primary users for M codes are cancer registries for their focus on cancer-related conditions. Health insurance companies and government health agencies typically use different types of codes for various purposes, not specifically M codes related to neoplasms.