Code Sets Overview

About Code Sets

Code sets classify medical:

• Diagnoses
• Procedures
• Diagnostic tests
• Treatments
• Equipment and supplies

They inform diverse health care functions, from billing to tracking public health.

HIPAA Code Sets

Code sets outlined in HIPAA regulations include:

• ICD-10 – International Classification of Diseases, 10^th edition
• HCPCS – Health Care Common Procedure Coding System
• CPT – Current Procedure Terminology
• CDT – Code on Dental Procedures and Nomenclature
• NDC – National Drug Codes

Violations

You can submit complaints about potential code sets violations via the Administrative Simplification Enforcement and Testing Tool (ASETT). Learn how to file a complaint.

Exceptions

An organization may request an exception from the use of a standard transaction from the Secretary to test a proposed modification to that standard. Learn about our exceptions process and the principles for requesting an exception (PDF).

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