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NMD Data Mapping

The NMD Data Mapping documentation describes each data element for NMD data submission, including valid values and data formats. The layout is divided into two sections

  • Transaction Header record (required)

  • Exam records (required)

There are separate mappings for each NMD version.

As of December 31, 2022, data file uploads will no longer be supported for Version 3.3. Versions 2.0, 2.2, 3.0 and 3.4 will be the only versions supported at that time.


  • NMD_JSON_Mapping_2.2.xlsx, June 13, 2022
  • NMD_JSON_Mapping_3.3.xlsx, November 18, 2021
  • NMD_JSON_Mapping_3.4.xlsx, June 13, 2022 
  • NMD NRDR Data Exchange:  June 10, 2022 (version 1.8) 

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