Certified Risk Adjustment Coder (CRC) Complete Practice Exam 2025

The correct answer is that the ICD-10-CM coding system is primarily used in the HCC (Hierarchical Condition Category) risk adjustment model. ICD-10-CM is the International Classification of Diseases, 10th Revision, Clinical Modification, which is a comprehensive coding system utilized by healthcare providers to document diagnoses and conditions.

The HCC risk adjustment model relies on these specific ICD-10-CM codes because they are designed to capture the complexity of patients’ health statuses, including chronic conditions, which directly influence the expected healthcare costs. By using these codes, the model can accurately reflect the patient population's risk and ensure appropriate reimbursement levels based on the complexity and severity of patients’ health conditions.

The other coding systems mentioned serve different purposes. SNOMED is primarily used for electronic health record systems and facilitates interoperability by providing detailed clinical meanings. LOINC is focused on laboratory and clinical observations, enabling standardized lab results and clinical measurements, while HCPCS focuses on healthcare procedure coding and medical supply usage, which does not encompass the comprehensive diagnostic coding required for the HCC model.