They do. The City just started using it within the last year, Henrico uses it as well. Sounds like the OP just wants some clarification about the codes they use.
Code 2 means non emergent response, code 3 is an emergent response
Then D62, D63, etc. are just clear codes they use. I'm not sure what each of them mean, but more than likely, patient contact report, patient refusal, no patient contact, etc.