Lump sum distribution from inherited IRA not reflected on 1099-R

I received a check for a lump sum distribution from an inherited IRA and I'm confused about how to declare it.  The 1099-R I received has the "total distribution" boxed checked and a distribution code of 4, but only shows the RMD amount in boxes 1 and 2a.  No other amounts are listed.  When I enter this information, I don't see a way to tell TurboTax that I took the full distribution.  Am I missing something or is my 1099-R incorrect?