As of October 14, 2019, Palmetto MOLDX has 13 LCDs in comment period (which runs to Novemer 15, 2019).
From its May 2019 LCDs, Palmetto has 7 LCDs still in review and not released to final, after a comment period that closed June 20, 2019. This is 116 days, or 3.9 months.
An 8th LCD, L38039, TruGraf renal rejection test, was released to final on October 4, 2019, which was 106 days or 3.5 months after its June 20 close-comments date.
Note that MolDx probably does not finalize LCDs until all comments are in, in all MoLDx MACs. This could have been a few weeks later than June 20 for the various MACs (Noridian, CGS, WPS).
I've put a very simple Excel in the cloud here.