Common Variable Immunodeficiency Support Group
Common variable immunodeficiency (CVID) is a group of 20-30 primary immunodeficiencies (PIDs) which have a common set of symptoms but with different underlying causes. CVID's underlying causes are different, but the result of these are that the body doesn't produce sufficient antibodies in response to exposure to pathogens.
I'm so sorry your husband was denied. He will need to appeal at this point. Here is a link to the guidelines for SSDI and Immune Deficiencies:
http://www.ssa.gov/disability/professionals/bluebook/14.00-Immune-Adult.htm
It's good for his Dr's to have these guidelines when filling out any paper work.
Also, you can contact the Immune Deficiency Foundation and they can refer you to attorneys who work specifically with PI patients for free...I can't remember the name of the organization off the top of my head, but the IDF will know, just go to primaryimmune.org and contact them by email or phone and they will give you the name and phone number of the legal group that assists CVID patients for free.
I hope that helps!
Wishing you and your husband all the best!
I'm not sure if this link will work, but you can give it a go
https://www.facebook.com/groups/127399757357272/