Hi,
If you are looking for 60601-1-2 certification, you most likely need the services of a certified test lab (perhaps you already work with one). Such labs usually have subject matter experts in-house (and copies of the latest standards versions), so I would try to ask them first. Most likely they are the first ones you'll need to provide the information to, so they will know best what they look for in order to enable certifying your device.
Cheers,
Ronen