1. X39 Exposure to other forces of nature

    The appropriate 7th character is to be added to each code from category X39

    • A - initial encounter
    • D - subsequent encounter
    • S - sequela
    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.