When the 1994 CDC Case Definition should be used

There are a number of situations in which the patient will clearly need a diagnosis that relies upon the 1994 CDC definition. This definition is the only one recognized by some long-term disability insurance companies, and other agencies providing financial, medical, housing and food assistance. In these cases, diagnosis according to both the 2003 Canadian definition and the 1994 CDC definition is preferable, and the doctor may rely on the 1994 definition in providing disability documentation.