In simple words: This code describes a serious complication of type 1 diabetes called ketoacidosis, where the body doesn't have enough insulin and becomes dangerously acidic, leading to a coma or unconsciousness.

Type 1 diabetes mellitus with ketoacidosis is a severe manifestation of uncontrolled Type 1 diabetes, characterized by the destruction of pancreatic beta cells leading to disrupted glucose metabolism and high blood sugar. Ketoacidosis arises from insulin deficiency, causing the body to break down fatty acids for energy, resulting in elevated ketone bodies in the blood and an acidotic state. This code specifically signifies Type 1 diabetes with ketoacidosis accompanied by a coma, a state of prolonged unconsciousness.

Example 1: A 15-year-old with known Type 1 diabetes presents to the ER unconscious after missing several insulin doses. Blood tests reveal high glucose and ketones, confirming DKA with coma., A young adult with Type 1 diabetes develops a severe infection, leading to uncontrolled blood sugar and subsequent ketoacidosis, resulting in a coma., A patient newly diagnosed with Type 1 diabetes presents with altered mental status, rapid breathing, and high blood sugar. The patient progresses to a coma and is found to have DKA.

Documentation should include detailed history, physical exam findings, blood glucose levels, ketone levels, arterial blood gas results (pH), electrolyte levels, and any relevant imaging or test results supporting the diagnosis of DKA and coma. Complete documentation of prior insulin regimen and any precipitating factors, such as infection, should also be included.