The 10 year marriage duration rule applies to all spouse and surviving spouse claims. Can't get benefits from a guy you married for six months, six years or 9 years and 11 months. Disability has nothing to do with the marriage duration requirement.

http://www.socialsecurity.gov/survivorplan/ifyou3.htm

Looks like I may have misunderstood your question. I thought you meant that you could not get surviving disabled divorced spouse's benefits even though the marriage had lasted 10 years. Guess I should have read and re-read your phrasing.

This stuff gets so complicated sometimes that it is easy to misread a question. Sorry for the bad info. Proves to everyone to never rely on anonymous message boards, even from well-meaning posters.

You will get an official letter from SSA telling you this.