ICD-10 4. Chapter 4: Endocrine, Nutritional, and Metabolic Diseases (E00-E89) a. Diabetes mellitus The diabetes mellitus codes are combination codes that include the type of diabetes mellitus, the body system affected, and the complications affecting that body system. As many codes within a particular category as are necessary to describe all of the complications of the disease may be used. They should be sequenced based on the reason for a particular encounter. Assign as many codes from categories E08 – E13 as needed to identify all of the associated conditions that the patient has. 1) Type of diabetes The age of a patient is not the sole determining factor, though most type 1 diabetics develop the condition before reaching puberty. For this reason type 1 diabetes mellitus is also referred to as juvenile diabetes. 2) Type of diabetes mellitus not documented If the type of diabetes mellitus is not documented in the medical record the default is E...