For those of us who grew up on RCRs (Runway Condition Codes) and Mus, the Runway Condition Assesssment Matrix (RCAM) may seem to be more of the same. But it isn't. For a history, see the excellent A article by Pete Coombs.
You will normally hear these in groups of three, meaning the first, middle, and last parts of the runway. It will be spoken as "Runway condition five, five, five," or something close to that.
Everything here is from the references shown below, with a few comments in an alternate color.
Figure: Runway Condition Codes, from RCAM.
FAA, Runway Condition Assessment Matrix, Undated
Safety Alert for Operations (SAFO) 16009, Runway Assessment and Condition Reporting, Effective October 1, 2016
Copyright 2019. Code 7700 LLC. All Rights Reserved.