Just some quick info. Others may go into more detail.
1. Being a DAN member ALLOWS you to purchase DAN DIVE insurance - a membership does not include dive insurance.
2. There is a DAN DIVE insurance plan (I believe Guardian and Preferred plans) that does include non-dive related accidents. The cheaper plan ONLY covers dive-related accidents.The higher plans also cover DIVING trip cancellation and interruption to the extent that the pre-paid expenses for the trip were related to diving.
3. DAN is a secondary insurance that pays after other insurances cover what they will.
4. DAN TRAVEL insurance is separate from the membership and DIVE insurance. There are also different levels for this insurance again covering pre-paid expenses. If I were getting this insurance (at my age and being on Medicare), it would be for the medical.
From what I've read through the years from others, DAN plans can vary from state to state, so best to do a little research.
* Most of the time when I travel and plan to dive, I have the DAN dive insurance and get the Allianz trip insurance offered when I purchase my air fare - it's cheap but gives me some medical.