  The charge radius of the deuteron (D), was recently determined to three times
the precision compared with previous measurements using the measured Lamb shift
in muonic deuterium (muD). However, the muD value is 5.6 $\sigma$ smaller than
the world averaged CODATA-2014 value [1]. To shed light on this discrepancy we
analyze the uncertainties of the nuclear structure calculations of the Lamb
shift in muD and conclude that nuclear theory uncertainty is not likely to be
the source of the discrepancy.
