Geoff,
I would suspect that visitors / tourists would fall under the non-eligible classification.
The list of fees is
here
Would highly recommend you contact the paitent relations officer at the hospital close to you and find out what the procedures are. I know it is a morbid task, but it will give you some sense of what you have to deal with, given the hospital.
You can locate the nearest hospitals
here
The quality of care does vary depending on the hospital, with Queen Mary, Prince of Wales and Pamela Nethersold Youde being rated as some of the best hospitals in Hong Kong.
Queen Mary (in our experience and knowledge) has very competant staff and have access to experienced doctors who are on the teaching staff.