An "RFC" is a Residual Functional Capacity form. And its purpose is to do exactly what its name implies: rate the residual (i.e. leftover) functional capacity of a claimant after taking into account the claimant's mental or physical disability. When a disability examiner is ready to make a decision on a claimant's case, the examiner does a write-up. In the write-up, the examiner explains the reasoning behind his or her decision (basically why he or she thinks the case should be approved or denied). The examiner's must then take the case to a DDS medical or psychological consultant (usually right down the hall) and have that individual complete an RFC form. On an RFC form, a DDS physician or psychologist will rate a claimant's residual functional capacity, or, in other words, a claimant's ability to engage in normal daily activities, after taking into account the individual's condition.