Type 1 diabetes mellitus with hyperglycemia

This code signifies Type 1 diabetes mellitus complicated by elevated blood glucose levels. It indicates a state where the body's immune system has destroyed insulin-producing cells, leading to insulin deficiency and subsequent hyperglycemia. This is a chronic condition requiring ongoing management.

Use this code when documentation clearly states a diagnosis of Type 1 diabetes and explicitly mentions the presence of hyperglycemia. This applies to both newly diagnosed cases presenting with high blood sugar and established Type 1 diabetics experiencing an episode of elevated glucose. Supporting documentation includes physician notes, lab results confirming hyperglycemia, and medication lists indicating insulin dependence.

• Ensure documentation specifies "Type 1" diabetes; do not use for Type 2 or unspecified diabetes.
• Confirm that hyperglycemia is explicitly stated, not just implied by insulin use.
• Sequence this code as the primary diagnosis when the hyperglycemia is the reason for the encounter, or as a secondary diagnosis if another condition is the primary reason but the hyperglycemia is being managed.