Yes if you are married you have to report all income including SS Disability. You should have a SSA-1099 for that. Even if you decide to file separately you would need to file a return with just the SSDI.
Up to 85% of Social Security becomes taxable when all your other income plus 1/2 your social security, reaches:
Married Filing Jointly: $32,000
Single or head of household: $25,000
Married Filing Separately: 0
