What type of coding system is primarily used in the United States for reporting medical diagnoses?

The coding system primarily used in the United States for reporting medical diagnoses is the ICD-10-CM, which stands for the International Classification of Diseases, 10th Revision, Clinical Modification. This system is specifically designed to capture diagnostic information that healthcare providers use for billing and documentation purposes. It includes a comprehensive set of codes that reflect diseases, conditions, and other health-related issues.

ICD-10-CM codes are crucial for insurance claims, as they provide the necessary details to justify the medical services rendered. They help ensure that healthcare providers receive appropriate reimbursement for services based on the diagnoses presented, allowing for better tracking of health statistics and resource allocation within the healthcare system.

In contrast, the other coding systems serve different purposes: HCPCS (Healthcare Common Procedure Coding System) primarily deals with services, procedures, and products not covered by the CPT coding system, CPT (Current Procedural Terminology) focuses on procedures and services provided by healthcare providers, and NDC (National Drug Code) is used for identifying specific drug products. Each coding system plays a distinct role within the healthcare industry, but ICD-10-CM is the standard for reporting diagnoses in the United States.