There was a television show in the 80s or 90s that had a theme song that resembled the introduction to Chicago's "If You Leave Me Now". I believe it was a drama based in a hospital... or maybe something surrounding the law..
It's driving me bonkers!

I think you could mean Hill Street Blues theme tune, check it out on U Tube... it's a great tune :-)

It is M.A.S.H.

No it isn't the M.A.S.H. theme song. MA.S.H.'s is "Suicide is Painless".