>>I remember the doctors hated the X, because the way diagnoses were classified didn't make half the sense that IX did.
Perhaps the particular implementation was at fault in 1995: starting every entry with definite article is bad. None of the English Language indices do that. Not saying it's perfect- there is some annoying stuff (e.g. "Gonarthrosis" rather than "Arthrosis, Knee") but the structure generally is OK.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1