what is iddm
IDDM may refer to: 1  Insulin-Dependent Diabetes Mellitus, now known as Diabetes mellitus type 1, an autoimmune disease resulting in the destruction of insulin-producing cells. 2  The term Insulin-Dependent Diabetes Mellitus is still widely used in Japan. 3  Integrated Diver Display Mask, an item of scuba gear. Insulin-Dependent Diabetes Mellitus, now known as Diabetes mellitus type 1, an autoimmune disease resulting in the destruction of insulin-producing cells.