Brian,
I believe that is doable. (multiple dx for same ICD-9 code).

I'm up for sharing (or giving away) my edited ICD9 codes without any liability waivers. But first I need to check if I am allowed to share my database without violating provisions of the current/previous EULA.

And suppose we are allowed to share this... Would this be done through FTP or through the e-mail attachment or through this website.