  The present knowledge of Lamb shift, fine- and hyperfine structure of the
$\mathrm{2S}$ and $\mathrm{2P}$ states in muonic deuterium is reviewed in
anticipation of the results of a first measurement of several $\mathrm{2S-2P}$
transition frequencies in muonic deuterium ($\mu\mathrm{d}$). A term-by-term
comparison of all available sources reveals reliable values and uncertainties
of the QED and nuclear structure-dependent contributions to the Lamb shift,
which are essential for a determination of the deuteron rms charge radius from
$\mu\mathrm{d}$. Apparent discrepancies between different sources are resolved,
in particular for the difficult two-photon exchange contributions. Problematic
single-sourced terms are identified which require independent recalculation.
