E11.65 – Type 2 diabetes mellitus with hyperglycemia

Learn what the ICD-10-CM code E11.65 entails, from its clinical information to related ICD-10 codes by reading this short guide.

By Emma Hainsworth on Aug 8, 2025.

Fact Checked by Ericka Pingol.

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E11.65 diagnosis code: Type 2 diabetes mellitus with hyperglycemia

The E11.65 is an ICD code that's included in the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM), and it is used to designate “Type 2 diabetes mellitus with hyperglycemia.”

There are two types of diabetes, Type 1 and Type 2. For Type 1 diabetes, the pancreas doesn't produce any insulin. For Type 2 diabetes, the pancreas still produces insulin, but it doesn't produce enough to overcome the resistance that the body develops against the effects of insulin. This generally involves insulin resistance and relative insulin deficiency.

This ICD-10 code is meant to be used for people confirmed to have Type 2 Diabetes, plus they are hyperglycemic.

Is the E11.65 billable?

Yes, the E11.65 ICD-10 code is billable and can be used to designate a patient for reimbursement purposes.

E11.65 clinical information

Type 2 Diabetes Mellitus is commonly found in middle-aged adults or those who are already in their late adulthood. To reiterate, this type of diabetes is characterized by the pancreas producing less insulin for the body. Type 2 diabetics develop a resistance to the effects of insulin, so if the diabetic doesn't get enough insulin to counteract the insulin resistance, glucose will build up in their blood, which is not good.

Type 2 diabetics have the following symptoms:

They lose significant weight in just a short time
They become more prone to infections
They are unusually hungry or thirsty
They urinate excessively
They have high blood glucose levels (which is what hyperglycemia is)

In the case of this ICD-10 code, the patient has hyperglycemia, meaning they have high blood glucose levels. This is not good because they can develop hyperosmolar syndrome, which is a life-threatening condition characterized by the high concentration of salt and glucose in the blood.

Oral antidiabetic drugs and other treatments will be prescribed and given by healthcare providers for those who suffer from this type of diabetes.

E11.65 synonyms include

Diabetic - poor control
Hemoglobin A1C - diabetic control finding
Hemoglobin A1c greater than 9% indicating poor diabetic control
Hyperglycemia due to diabetes mellitus
Hyperglycemia due to type 2 diabetes mellitus
Hyperglycemic crisis due to diabetes mellitus
Hyperglycemia due to chemical-induced diabetes mellitus
Severe nonproliferative diabetic retinopathy due to type 2 diabetes
Moderate nonproliferative diabetic retinopathy due to type 2 diabetes
Proliferative diabetic retinopathy due to type 2 diabetes
Diabetic neuropathy due to type 2 diabetes and hyperglycemia
Postprocedural diabetes mellitus type 2
Postpancreatectomy diabetes mellitus type 2
Diabetic peripheral angiopathy due to type 2 diabetes mellitus

Popular search terms for E11.65

E11.65 ICD-10 code
ICD-10 E11.65
E11.65 diagnosis codes
ICD-10 code for type 2 diabetes mellitus with hyperglycemia

Other ICD-10 codes commonly used for Type 2 diabetes

E11.00 - Type 2 diabetes mellitus with hyperosmolarity without nonketotic hyperglycemic-hyperosmolar coma (NKHHC)
E11.01 - Type 2 diabetes mellitus with hyperosmolarity with coma
E11.10 - Type 2 diabetes mellitus with ketoacidosis without coma
E11.11 - Type 2 diabetes mellitus with ketoacidosis with coma
E11.21 - Type 2 diabetes mellitus with diabetic nephropathy
E11.22 - Type 2 diabetes mellitus with diabetic chronic kidney disease
E11.29 - Type 2 diabetes mellitus with other diabetic kidney complication
E11.311 - Type 2 diabetes mellitus with unspecified diabetic retinopathy with macular edema
E11.319 - Type 2 diabetes mellitus with unspecified diabetic retinopathy without macular edema
E11.3211 - Type 2 diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edema, right eye
E11.3212 - Type 2 diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edema, left eye

Commonly asked questions

Yes, this ICD-10 code is billable.

It’s best to use this code once the patient is confirmed to have Type 2 Diabetes and they are hyperglycemic.

Insulin, metformin, GLP-1 receptor agonists, SGLT2 inhibitors, proper weight loss, diet adjustments. If the hyperglycemia is severe, then fluid replacement, electrolyte replacement, and insulin therapy will be part of the treatment.

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