A continuing disability review (CDR) is a periodic evaluation performed by the Social Security Administration in order to determine whether or not your disability has improved.
Once you have been approved for benefits, the Administration will place a diary time on your case for re-evaluation. This is usually between one and three years following the favorable decision.
When the CDR is performed you will likely be asked to complete a form about your medical treatment and any additional training or work that you have performed since your were deemed disabled.
If the Social Security Administration determines that you are no longer disabled then your benefits will be terminated. However, if nothing has changed significantly then you will be recertified for disability status.
In Supplemental Security Income cases, the CDR will also include a review of your income, resources, and living arrangements to insure that you are within the non-medical requirements for these benefits.