ICD-10 Code E10.10 – Type 1 diabetes mellitus with ketoacidosis without coma (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E10.10 – Type 1 diabetes mellitus with ketoacidosis without coma
What it is
This code identifies type 1 diabetes mellitus complicated by diabetic ketoacidosis, but the patient is not in coma. Use it when the record clearly documents both type 1 diabetes and ketoacidosis.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may describe dehydration, nausea, vomiting, abdominal pain, or altered mental status without coma, along with a diagnosis of ketoacidosis.
When to use this code
Use E10.10 when the provider documents type 1 diabetes with ketoacidosis and specifically states the patient is not comatose. It fits inpatient or emergency encounters where the condition is being actively evaluated or treated. Check documentation if coma status is unclear.
Do not use for
Do not use this code for diabetic ketoacidosis in type 2 diabetes, or when coma is documented. If the record does not specify type 1 diabetes, check documentation.
Coding tip
Always confirm both the diabetes type and the presence or absence of coma before assigning E10.10.