Welcome @jkoopmann
Have you considered using Value Mappings in Grafana? Something like this:
When value = 3
When value = 19
Is the output always 3 or 19?
I monitor the error codes on a motor VFD and there are about 30 codes. I just put each of them into Grafana as a value mapping and then the “plain English” text is displayed instead of the two-digit code.