Hi Guest!

D3221 - pulpal debridement, primary and permanent teeth
can be crosscoded to:
41800 - drainage dentoalvelolar abscess, cyst, hematoma


D2392 - resin-based composite - two surfaces, posterior
D2790 - crown - full cast high noble metal
D2740 - crown - porcelain/ceramic substrate
D2950 - core buildup, including any pins when required
D3220 - therapeutic pulpotomy (excluding final restoration) - removal of pulp coronal to the dentinocemental junction and application of medicament

The codes listed above do not have direct crosscodes we are aware of, so you can either bill the "D" code on the medical claim (many insurers these days will process "D" codes when they are medically necessary services), or you can use the CPT code below and include a narrative report describing the procedure:
41899 - Unlisted procedure, dentoalveolar structures

Hope this helps!