Medical Coding Practice Test 2025 – Comprehensive All-in-One Guide to Success!

The correct answer highlights the primary types of codes used in the International Classification of Diseases, 10th Revision (ICD-10). This coding system is primarily designed to classify diseases and health-related conditions for statistical purposes, billing, and insurance. The two main types of codes in ICD-10 are diagnosis codes and procedure codes.

Diagnosis codes serve to identify the medical conditions or diseases that a patient may have during a visit to a healthcare provider. These codes are essential for documenting the patient's health status and are used to communicate the nature of the patient's complaints or illnesses to insurance companies and other health organizations.

Procedure codes, while more commonly associated with the Current Procedural Terminology (CPT), also exist in various coding systems to describe the medical, surgical, or diagnostic services provided to the patient. Although ICD-10 does not focus specifically on procedures as much as CPT, the integration of coding systems allows certain procedural codes to be linked with corresponding diagnosis codes to ensure accurate billing and healthcare management.

The other options mistakenly suggest the existence of types of codes that do not align with the primary functions of the ICD-10 coding system. For instance, treatment, prescription, service, billing, assessment, and referral codes are not classifications under ICD-10 but rather