1. X39 Exposure to other forces of nature

    1. X39.0 Exposure to natural radiation

      1. X39.01 Exposure to radon

      2. X39.08 Exposure to other natural radiation

    2. X39.8 Other exposure to forces of nature

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.