AHA Coding Clinic® for ICD-9 - 1991 Third Quarter

Diabetes Mellitus and Related Conditions

Diabetes mellitus is a disorder of glucose metabolism due to either an absolute decrease in the amount of insulin secreted by the pancreas or to a reduction in the biologic effectiveness of the insulin secreted. It is classified into two major categories: Type I or insulin-dependent diabetes mellitus (IDDM), also known as "Juvenile-onset diabetes mellitus," and Type II or noninsulin-dependent diabetes mellitus (NIDDM), also known as "adult-onset diabetes mellitus." These two groups are indicated in the classification scheme by the fifth digit code. Other conditions frequently confused with true diabetes mellitus include impaired glucose tolerance and gestational...

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