Medical Coding Practice Test 2026 - Free Medical Coding Practice Questions and Study Guide

ICD-9-CM codes typically address diagnoses and reasons for care. These codes are used to classify and code all diagnoses, symptoms, and procedures recorded in conjunction with hospital care in the United States. The codes are used for billing purposes, to convey important information about the patient's condition, and to support medical necessity for the services provided. The other options, such as social history, income level, and employment status, are not typically addressed by ICD-9-CM codes.