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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.

Versions 2.0, 2.2, 3.0 and 3.4 are the only versions supported at this time. 


  • NMD_JSON_Mapping_2.2.xlsx, September 30, 2023
  • NMD_JSON_Mapping_3.4.xlsx, May 4, 2024
  • NMD NRDR Data Exchange:  September 30, 2023 (version 1.9) 

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