Node HTTP Response Statistics Exposed

Is it possible to gather statistics and expose them via SNMP HTTP status responses from the pool members of a virtual application?

For example, I have a VIP/app with 3 members in a pool: a, b, and c. I know that sometimes a given member will throw 500 or 504 errors. I'd like to be able to count and expose those errors via SNMP so I get something like:

a 500 -> 3 a 504 -> 9 b 500 -> ...

and so on and so forth.