ICD-10 Diagnosis Code X39.01

Exposure to radon

Diagnosis Code X39.01

ICD-10: X39.01
Short Description: Exposure to radon
Long Description: Exposure to radon
This is the 2018 version of the ICD-10-CM diagnosis code X39.01

Not Valid for Submission
The code X39.01 is a "header" and not valid for submission for HIPAA-covered transactions.

Code Classification
  • External causes of morbidity and mortality (V01–Y98)
    • Exposure to forces of nature (X30-X39)
      • Exposure to other forces of nature (X39)

Information for Medical Professionals

Index of External Cause of Injuries
References found for the code X39.01 in the External Cause of Injuries Index:

    • Forces of nature
      • radiation (natural)
        • radon
    • Forces of nature
      • radon
    • Radiation(exposure to)
      • natural NEC
        • radon

Information for Patients


You can't see radon. And you can't smell it or taste it. But it may be a problem in your home. Radon comes from the natural breakdown of uranium in soil, rock, and water. Radon is the second leading cause of lung cancer in the United States.

There are low levels of radon outdoors. Indoors, there can be high levels. Radon can enter homes and buildings through cracks in floors, walls, or foundations. Radon can also be in your water, especially well water. Testing is the only way to know if your home has elevated radon levels. It is inexpensive and easy. You can buy a test kit at most hardware stores or hire someone to do a test. Radon reduction systems can bring the amount of radon down to a safe level. The cost depends on the size and design of your home.

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