CMS has periodically published MAC prices for the rapidly appearing range of COVID lab test codes. This will be equally important in 2021, because CMS bumped a number of the codes into the "gapfill" process rather than directly assigning national prices.
Good news for CMS watchers - CMS updated its webpage for MAC COVID prices on January 25, 2021.
I've clipped the table below as well. The MAC prices are uniform so you really only need the first 3 columns.
|click to enlarge