Code Sets Overview

Code Sets Overview
A magnifying glass over a medical document

Code Sets Overview

Under HIPAA, HHS adopted specific code sets for diagnoses and procedures used in all transactions.

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:


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


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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Page Last Modified:
04/03/2024 03:36 PM