State-of-the-art lattice QCD calculations of scattering amplitudes in coupled-channel Dπ, Dη and DsK¯ scattering, as well elastic DK scattering are discussed. The methodology employed allows a determination of the relevant poles in the scattering matrix, while also providing a measure of the coupling of each channel to a given pole. By investigating S, P and D wave interactions, the nature of states with J P = 0 +, relevant for the D ∗ 0 (2400) and D ∗ s0 (2317), as well as states with J P = 1 −,2 + are discussed.