If death resulted from a service-connected disability incurred in the area for which a Southwest Asia Service Medal is awarded, a certified copy of the death certificate must be furnished. In such case, the death of the veteran will be considered as having been due to service-connected disability when the evidence establishes that such disability was either the principal or contributory cause of death, and is recognized as such by the United States Department of Veterans Affairs.
Ill. Admin. Code tit. 95, § 121.170