2024 ICD-10-CM Diagnosis Code E11.9

Type 2 diabetes mellitus without complications

ICD-10-CM Code:
ICD-10 Code for:
Type 2 diabetes mellitus without complications
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Code Navigator:

Code Classification

  • Endocrine, nutritional and metabolic diseases
    • Diabetes mellitus
      • Type 2 diabetes mellitus

E11.9 is a billable diagnosis code used to specify a medical diagnosis of type 2 diabetes mellitus without complications. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

This code is not usually sufficient justification for admission to an acute care hospital when used as a principal diagnosis.

The code is commonly used in family practice, internal medicine, pediatrics , family practice medical specialties to specify clinical concepts such as diabetes mellitus w/o complications type 2.

The code is linked to some Quality Measures as part of Medicare's Quality Payment Program (QPP). When this code is used as part of a patient's medical record the following Quality Measures might apply: Diabetes: Hemoglobin A1c (hba1c) Poor Control (>9%) , Diabetes: Eye Exam.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Acanthosis nigricans
  • Acanthosis nigricans due to type 2 diabetes mellitus
  • Acquired acanthosis nigricans
  • Atherosclerosis, deafness, diabetes, epilepsy, nephropathy syndrome
  • Attends diabetes monitoring
  • Blood sugar charts
  • Brittle diabetes mellitus
  • Brittle type 2 diabetes mellitus
  • Dermopathy due to type 2 diabetes mellitus
  • Diabetes mellitus
  • Diabetes mellitus in remission
  • Diabetes mellitus type 2 without retinopathy
  • Diabetes mellitus without complication
  • Diabetes monitoring check done
  • Diabetes monitoring default
  • Diabetes monitoring deleted
  • Diabetes: practice program
  • Diabetes: shared care program
  • Diabetic - cooperative patient
  • Diabetic - follow-up default
  • Diabetic - good control
  • Diabetic - good control
  • Diabetic - good control
  • Diabetic dermopathy
  • Diabetic drug side effects
  • Diabetic monitoring - injection sites
  • Diabetic monitoring - injection sites
  • Diabetic on diet only
  • Diabetic on insulin
  • Diabetic on insulin and oral treatment
  • Diabetic on non-insulin injectable medication
  • Diabetic on oral treatment
  • Diabetic treatment changed
  • Diabetic-uncooperative patient
  • Does rotate site of insulin injection
  • Glucose-galactose malabsorption
  • Has seen dietitian - diabetes
  • Hemoglobin A1C - diabetic control finding
  • Hemoglobin A1C - diabetic control finding
  • Hemoglobin A1C - diabetic control finding
  • Hemoglobin A1C - diabetic control finding
  • Hemoglobin A1c between 7 percent to 10 percent indicating borderline diabetic control
  • Hemoglobin A1c between 7%-9% indicating borderline diabetic control
  • Hemoglobin A1c greater than 10 percent indicating poor diabetic control
  • Hemoglobin A1c less than 7 percent indicating good diabetic control
  • Hemoglobin A1c within reference range
  • High hemoglobin A1c level
  • Insulin resistance
  • Insulin treated type 2 diabetes mellitus
  • Intrauterine growth restriction, short stature, early adult-onset diabetes syndrome
  • Ketosis-resistant diabetes mellitus
  • Lactic acidosis due to diabetes mellitus
  • Malabsorption of glucose
  • Maturity onset diabetes of the young, type 2
  • Megaloblastic anemia due to inborn errors of metabolism
  • Megaloblastic anemia, thiamine-responsive, with diabetes mellitus and sensorineural deafness
  • Metabolic acidosis due to diabetes mellitus
  • Neural hearing loss
  • Newly diagnosed diabetes
  • Photomyoclonus, diabetes mellitus, deafness, nephropathy and cerebral dysfunction
  • Pre-existing type 2 diabetes mellitus
  • Thiamine-responsive megaloblastic anemia
  • Type 2 diabetes mellitus
  • Type 2 diabetes mellitus controlled by diet
  • Type 2 diabetes mellitus in nonobese
  • Type 2 diabetes mellitus well controlled
  • Type 2 diabetes mellitus without complication
  • Type II diabetes mellitus in remission
  • Understands diet - diabetes
  • Urine sugar charts
  • Woodhouse Sakati syndrome

Clinical Classification

Clinical CategoryCCSR Category CodeInpatient Default CCSROutpatient Default CCSR
Diabetes mellitus without complicationEND002Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.
Diabetes mellitus, Type 2END005N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.

Clinical Information

  • Acanthosis Nigricans

    a circumscribed melanosis consisting of a brown-pigmented, velvety verrucosity or fine papillomatosis appearing in the axillae and other body folds. it occurs in association with endocrine disorders, underlying malignancy, administration of certain drugs, or as in inherited disorder.
  • Diabetes Complications

    conditions or pathological processes associated with the disease of diabetes mellitus. due to the impaired control of blood glucose level in diabetic patients, pathological processes develop in numerous tissues and organs including the eye, the kidney, the blood vessels, and the nerve tissue.
  • Diabetes Mellitus

    a heterogeneous group of disorders characterized by hyperglycemia and glucose intolerance.
  • Diabetes Mellitus, Experimental

    diabetes mellitus induced experimentally by administration of various diabetogenic agents or by pancreatectomy.
  • Diabetes Mellitus, Lipoatrophic

    a type of diabetes mellitus that is characterized by severe insulin resistance and lipodystrophy. the latter may be generalized, partial, acquired, or congenital (lipodystrophy, congenital generalized).
  • Diabetes Mellitus, Type 1

    a subtype of diabetes mellitus that is characterized by insulin deficiency. it is manifested by the sudden onset of severe hyperglycemia, rapid progression to diabetic ketoacidosis, and death unless treated with insulin. the disease may occur at any age, but is most common in childhood or adolescence.
  • Diabetes Mellitus, Type 2

    a subclass of diabetes mellitus that is not insulin-responsive or dependent (niddm). it is characterized initially by insulin resistance and hyperinsulinemia; and eventually by glucose intolerance; hyperglycemia; and overt diabetes. type ii diabetes mellitus is no longer considered a disease exclusively found in adults. patients seldom develop ketosis but often exhibit obesity.
  • Diabetes, Gestational

    diabetes mellitus induced by pregnancy but resolved at the end of pregnancy. it does not include previously diagnosed diabetics who become pregnant (pregnancy in diabetics). gestational diabetes usually develops in late pregnancy when insulin antagonistic hormones peaks leading to insulin resistance; glucose intolerance; and hyperglycemia.
  • Latent Autoimmune Diabetes in Adults

    autoimmune diabetes in adults with slowly progressive pancreatic beta cell failure and the presence of circulating autoantibodies to pancreatic islets cell antigens.
  • Polyendocrinopathies, Autoimmune

    autoimmune diseases affecting multiple endocrine organs. type i is characterized by childhood onset and chronic mucocutaneous candidiasis (candidiasis, chronic mucocutaneous), while type ii exhibits any combination of adrenal insufficiency (addison's disease), lymphocytic thyroiditis (thyroiditis, autoimmune;), hypoparathyroidism; and gonadal failure. in both types organ-specific antibodies against a variety of endocrine glands have been detected. the type ii syndrome differs from type i in that it is associated with hla-a1 and b8 haplotypes, onset is usually in adulthood, and candidiasis is not present.
  • Insulin Resistance

    diminished effectiveness of insulin in lowering blood sugar levels: requiring the use of 200 units or more of insulin per day to prevent hyperglycemia or ketosis.
  • Metabolic Syndrome

    a cluster of symptoms that are risk factors for cardiovascular diseases and type 2 diabetes mellitus. the major components of metabolic syndrome include abdominal obesity; atherogenic dyslipidemia; hypertension; hyperglycemia; insulin resistance; a proinflammatory state; and a prothrombotic (thrombosis) state.
  • Pancreatectomy

    surgical removal of the pancreas. (dorland, 28th ed)
  • Acanthosis Nigricans

    a melanotic cutaneous lesion that develops in the axilla and other body folds. it may be idiopathic, drug-induced, or it may be associated with the presence of an endocrine disorder or malignancy.
  • Hyperandrogenism, Insulin Resistance, Acanthosis Nigricans Syndrome|HAIR-AN Syndrome

    a condition characterized by hyperandrogenism, insulin resistance, and acanthosis nigricans, typically associated with obesity in teenage girls. it is considered to be a subtype of polycystic ovarian syndrome, but may occur in male individuals. etiology is unclear, but some cases may be associated with mutations affecting the tyrosine kinase domain of the insulin receptor.
  • Insulin Resistant Diabetes Mellitus with Acanthosis Nigricans and Hyperandrogenism|Type A Insulin Resistance Syndrome

    a syndrome of insulin resistance caused by mutation(s) in the insr gene, encoding the insulin receptor. this condition is characterized by a clinical triad of hyperinsulinemia, acanthosis nigricans, and hyperandrogenism without lipodystrophy. this is the least severe of a spectrum of disorders; the other two conditions are rabson-mendenhall syndrome and donohoe syndrome.
  • Homeostatic Model Assessment of Insulin Resistance

    an assessment of beta-cell function and insulin resistance based on fasting blood glucose and insulin concentrations.
  • Insulin Receptor Mutation - Associated Insulin Resistance Syndromes

    insulin resistance caused by inactivating mutation(s) in the insr gene encoding the insulin receptor.
  • Insulin Resistance

    decreased sensitivity to circulating insulin which may result in acanthosis nigicrans, elevated insulin level or hyperglycemia.
  • Insulin Resistance Measurement|INSULINR|Insulin Resistance|Insulin Resistance

    the determination of the insulin resistance (cells inability to respond to insulin) in a biological specimen.
  • Insulin Resistance Syndrome

    a cluster of closely related metabolic abnormalities associated with insulin resistance that confer an increased risk of the development of type 2 diabetes and cardiovascular disease. these abnormalities may include obesity, high blood pressure, abnormal cholesterol levels, proteinuria, and/or polycystic ovary syndrome.
  • Obesity-Associated Insulin Resistance

    insulin resistance associated with obesity, which may be attributed in part to impaired insulin signaling in target tissues, or impaired insulin-stimulated glucose transport due to reduced expression of the glucose transporter protein 4.

Coding Guidelines

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.

If the type of diabetes mellitus is not documented in the medical record the default is E11.-, Type 2 diabetes mellitus.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10-CM Code Edits are applicable to this code:

  • Questionable admission codes - Some diagnoses are not usually sufficient justification for admission to an acute care hospital. For example, if a patient is given code R030 for elevated blood pressure reading, without diagnosis of hypertension, then the patient would have a questionable admission, since elevated blood pressure reading is not normally sufficient justification for admission to a hospital. The following list contains diagnosis codes identified as questionable admission when used.

Convert E11.9 to ICD-9-CM

  • ICD-9-CM Code: 250.00 - DMII wo cmp nt st uncntr
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Quality Payment Program Measures

When code E11.9 is part of the patient's diagnoses the following Quality Measures apply and affect reimbursement. The objective of Medicare's Quality Measures is to improve patient care by making it more: effective, safe, efficient, patient-centered and equitable.

Quality Measure Description Quality Domain Measure Type High Priority Submission Methods
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)Percentage of patients 18-75 years of age with diabetes who had hemoglobin A1c > 9.0% during the measurement period.Effective Clinical CareIntermediateoutcomeYESClaims, Electronic Health Record, Cms Web Interface, Registry
Diabetes: Eye ExamPercentage of patients 18-75 years of age with diabetes and an active diagnosis of retinopathy in any part of the measurement period who had a retinal or dilated eye exam by an eye care professional during the measurement period or diabetics with no diagnosis of retinopathy in any part of the measurement period who had a retinal or dilated eye exam by an eye care professional during the measurement period or in the 12 months prior to the measurement period.Effective Clinical CareProcessNOClaims, Electronic Health Record, Registry

Patient Education

Diabetes Type 2

What is type 2 diabetes?

Type 2 diabetes is a disease in which your blood glucose, or blood sugar, levels are too high. Glucose is your main source of energy. It comes from the foods you eat. A hormone called insulin helps the glucose get into your cells to give them energy. If you have diabetes, your body doesn't make enough insulin or doesn't use insulin well. The glucose then stays in your blood and not enough goes into your cells.

Over time, having too much glucose in your blood can cause health problems. But you can take steps to manage your diabetes and try to prevent these health problems.

What causes type 2 diabetes?

Type 2 diabetes may be caused by a combination of factors:

  • Being overweight or having obesity
  • Not being physically active
  • Genetics and family history

Type 2 diabetes usually starts with insulin resistance. This is a condition in which your cells don't respond normally to insulin. As a result, your body needs more insulin to help the glucose enter your cells. At first, your body makes more insulin to try to get cells to respond. But over time, your body can't make enough insulin, and your blood glucose levels rise.

Who is at risk for type 2 diabetes?

You are at higher risk of developing type 2 diabetes if you:

  • Are over age 45. Children, teenagers, and younger adults can get type 2 diabetes, but it is more common in middle-aged and older people.
  • Have prediabetes, which means that your blood sugar is higher than normal but not high enough to be called diabetes
  • Had diabetes in pregnancy or gave birth to a baby weighing 9 pounds or more.
  • Have a family history of diabetes
  • Are overweight or have obesity
  • Are Black or African American, Hispanic/Latino, American Indian, Asian American, or Pacific Islander
  • Are not physically active
  • Have other conditions such as high blood pressure, heart disease, stroke, polycystic ovary syndrome (PCOS), or depression
  • Have low HDL (good) cholesterol and high triglycerides
  • Have acanthosis nigricans - dark, thick, and velvety skin around your neck or armpits

What are the symptoms of type 2 diabetes?

Many people with type 2 diabetes have no symptoms at all. If you do have them, the symptoms develop slowly over several years. They might be so mild that you do not notice them. The symptoms can include:

  • Increased thirst and urination
  • Increased hunger
  • Feeling tired
  • Blurred vision
  • Numbness or tingling in the feet or hands
  • Sores that do not heal
  • Unexplained weight loss

How is type 2 diabetes diagnosed?

Your health care provider will use blood tests to diagnose type 2 diabetes. The blood tests include:

  • A1C test, which measures your average blood sugar level over the past 3 months
  • Fasting plasma glucose (FPG) test, which measures your current blood sugar level. You need to fast (not eat or drink anything except water) for at least 8 hours before the test.
  • Random plasma glucose (RPG) test, which measures your current blood sugar level. This test is used when you have diabetes symptoms and the provider does not want to wait for you to fast before having the test.

What are the treatments for type 2 diabetes?

Treatment for type 2 diabetes involves managing your blood sugar levels. Many people are able to do this by living a healthy lifestyle. Some people may also need to take medicine.:

  • A healthy lifestyle includes following a healthy eating plan and getting regular physical activity. You need to learn how to balance what you eat and drink with physical activity and diabetes medicine, if you take any.
  • Medicines for diabetes include oral medicines, insulin, and other injectable medicines. Over time, some people will need to take more than one type of medicine to control their diabetes.
  • You will need to check your blood sugar regularly. Your health care provider will tell you how often you need to do it.
  • It's also important to keep your blood pressure and cholesterol levels close to the targets your provider sets for you. Make sure to get your screening tests regularly.

Can type 2 diabetes be prevented?

You can take steps to help prevent or delay type 2 diabetes by losing weight if you are overweight, eating fewer calories, and being more physically active. If you have a condition which raises your risk for type 2 diabetes, managing that condition may lower your risk of getting type 2 diabetes.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

[Learn More in MedlinePlus]

Type 2 diabetes

Type 2 diabetes is a disorder characterized by abnormally high levels of blood glucose, also called blood sugar. In this form of diabetes, the body stops using and making insulin properly. Insulin is a hormone produced in the pancreas that helps regulate blood glucose levels. Specifically, insulin controls how much glucose (a type of sugar) is passed from the blood into cells, where it is used as an energy source. When blood glucose levels are high (such as after a meal), the pancreas releases insulin to move the excess glucose into cells, which reduces the amount of glucose in the blood.

Most people who develop type 2 diabetes first have insulin resistance, a condition in which the body's cells use insulin less efficiently than normal. As insulin resistance develops, more and more insulin is needed to keep blood glucose levels in the normal range. To keep up with the increasing need, insulin-producing cells in the pancreas (called beta cells) make larger amounts of insulin. Over time, the beta cells become less able to respond to blood glucose changes, leading to an insulin shortage that prevents the body from reducing blood glucose levels effectively. Most people have some insulin resistance as they age, but inadequate exercise and excessive weight gain make it worse, greatly increasing the likelihood of developing type 2 diabetes.

Type 2 diabetes can occur at any age, but it most commonly begins in middle age or later. Signs and symptoms develop slowly over years. They include frequent urination (polyuria), excessive thirst (polydipsia), fatigue, blurred vision, tingling or loss of feeling in the hands and feet (diabetic neuropathy), sores that do not heal well, and weight loss. If blood glucose levels are not controlled through medication or diet, type 2 diabetes can cause long-lasting (chronic) health problems including heart disease and stroke; nerve damage; and damage to the kidneys, eyes, and other parts of the body.

[Learn More in MedlinePlus]

Type 2 Diabetes

Learn about the symptoms of type 2 diabetes, what causes the disease, how it’s diagnosed, and steps you can take to help prevent or delay type 2 diabetes.
[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.


[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.