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E11.00
ICD-10-CM
Hyperosmolar Hyperglycemic State

Find comprehensive information on Hyperosmolar Hyperglycemic State diagnosis, including clinical documentation tips, ICD-10 codes (E11.1, E14.1), medical coding guidelines, and healthcare best practices for HHS management. Learn about HHS symptoms, treatment protocols, and the differences between HHS and DKA. This resource provides essential information for healthcare professionals, clinicians, and medical coders seeking accurate and up-to-date guidance on Hyperosmolar Hyperglycemic Syndrome.

Also known as

HHS
Hyperosmolar Non-Ketotic State
Hyperosmolar Hyperglycemic Nonketotic Syndrome

Diagnosis Snapshot

Key Facts
  • Definition : Severe hyperglycemia with dehydration and altered mental status, but without significant ketoacidosis.
  • Clinical Signs : High blood sugar (often >600 mg/dL), dry mouth, extreme thirst, frequent urination, confusion, drowsiness.
  • Common Settings : Elderly patients with type 2 diabetes, often triggered by infection, illness, or certain medications.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC E11.00 Coding
E11-E14

Diabetes mellitus

Disorders of glucose metabolism, including hyperosmolar hyperglycemic state.

E86

Volume depletion

Conditions related to fluid loss, often associated with HHS.

E87

Other disorders of fluid, electrolyte, and acid-base balance

Includes electrolyte imbalances commonly seen in HHS like hypernatremia and hyperkalemia.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the primary diagnosis Hyperosmolar Hyperglycemic State?

  • Yes

    Is there a documented nonketotic coma?

  • No

    Do not code as Hyperosmolar Hyperglycemic State. Review clinical documentation for alternative diagnosis.

Code Comparison

Related Codes Comparison

When to use each related code

Description
Hyperosmolar Hyperglycemic State
Diabetic Ketoacidosis
Uncontrolled Diabetes Mellitus

Documentation Best Practices

Documentation Checklist
  • Document plasma glucose >600 mg/dL
  • Document serum osmolality >320 mOsm/kg
  • Document profound dehydration findings
  • Exclude ketoacidosis and lactic acidosis
  • Document altered mental status or neurological signs

Mitigation Tips

Best Practices
  • Document blood glucose, osmolarity, ketones for HHS diagnosis (ICD-10 E14.10)
  • Ensure CDI of dehydration status, electrolyte imbalances for accurate coding.
  • Monitor, document, and code neurologic status changes in HHS (ICD-10 G93.4)
  • Timely fluid resuscitation, insulin therapy documentation for compliance, coding.
  • Educate patients on sick day management to prevent HHS readmissions (ICD-10 Z71.3)

Clinical Decision Support

Checklist
  • Plasma glucose >600 mg/dL (ICD-10 E14.10)
  • Serum osmolality >320 mOsm/kg (SNOMED CT 714539000)
  • Absent/mild ketosis (patient safety check)
  • Altered mental status documented (E/M coding)

Reimbursement and Quality Metrics

Impact Summary
  • Hyperosmolar Hyperglycemic State reimbursement impacts depend on accurate ICD-10-CM coding (E11.00-E11.04) and appropriate DRG assignment for optimal hospital payment.
  • Quality metrics impacted: Hospital readmission rates, average length of stay, severity-adjusted mortality.
  • Coding accuracy affects HHS quality reporting, value-based purchasing programs, and public outcomes transparency.
  • Proper documentation of HHS complications like acute kidney injury or infection influences case-mix index and overall reimbursement.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes for . Our AI-powered assistant ensures compliance and reduces coding errors.

Quick Tips

Practical Coding Tips
  • Code primary HHS E11.0
  • Document serum osmolality
  • Query physician for complications
  • Code underlying diabetes
  • Check for acidosis/DKA

Documentation Templates

Patient presents with hyperosmolar hyperglycemic state (HHS), a serious metabolic complication of diabetes mellitus, typically type 2 diabetes.  Onset was gradual with presenting symptoms including polyuria, polydipsia, polyphagia, and weight loss over the past [Number] daysweeks.  The patient exhibits signs of severe dehydration, including dry mucous membranes, tachycardia, and hypotension.  Neurological symptoms such as altered mental status, ranging from confusion to coma, are also noted.  Laboratory findings reveal marked hyperglycemia (blood glucose greater than 600 mgdL), elevated serum osmolality (greater than 320 mOsmkg), and absence of significant ketoacidosis.  Serum electrolytes show hypernatremia, hypokalemia, and elevated blood urea nitrogen (BUN) and creatinine, indicative of acute kidney injury secondary to dehydration.  Urinalysis reveals glucosuria without significant ketonuria.  Differential diagnoses considered include diabetic ketoacidosis (DKA), hyperglycemic hyperosmolar nonketotic syndrome (HHNS), and dehydration due to other causes.  The diagnosis of HHS is based on the clinical presentation, hyperglycemia, hyperosmolality, and absence of significant ketosis.  Treatment plan includes aggressive fluid resuscitation with intravenous isotonic saline to correct dehydration and restore intravascular volume, continuous intravenous insulin infusion to lower blood glucose levels, and close monitoring of electrolytes, renal function, and mental status.  Electrolyte imbalances, particularly potassium, will be corrected as needed.  The patient will be closely monitored for potential complications such as cerebral edema, acute kidney injury, and thromboembolic events.  Patient education will focus on diabetes management, including medication adherence, blood glucose monitoring, and recognition of early signs and symptoms of HHS.  Coding will likely include ICD-10-CM code E11.10 for type 2 diabetes mellitus with hyperosmolarity without nonketotic hyperglycemic-hyperosmolar coma, and additional codes to reflect complications such as acute kidney injury.  Medical billing will reflect the level of care provided, including intensive care unit (ICU) admission if required.
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