Code Set 72 is Cerner's Clinical Event Codes system. It is entirely customizable by clients, but as you've seen, we do perform targeted LOINC/SNOMED mappings. Code Set 72 is quite large, so while we do perform a standard set of mappings for all clients, we tend to perform targeted mappings on a per-need basis.
Based on your questions, I'm guessing you're asking about Observations
(let us know if not). I don't believe we have any standard set of NICU Observations for clients, but if there is something you'd specifically like to see available in the public sandbox, we can assist there.