The D7200 RAW photos are not supported by Lightroom 5. You need to purchase either Lightroom 6 or Lightroom CC 2015
ALternatively, you can use the FREE Adobe DNG Converter version 9.0 or later, download that, then use it to convert your RAW to DNG and then import the DNGs into Lightroom 5
There is no support for the D7200 in Lightroom 5 as far as raw files are concerned. You will either have to upgrade to Lightroom 6 or Lightroom CC 2015, or you can use the free DNG converter to create DNG copies that you can use with Lightroom 5.
This camera is Supported with Lightroom CC/6.
Upgrade to the latest version or You can convert Raw files to DNG using free DNG converter
Hope this helps