Endocrine, nutritional and metabolic diseases

ICD-10 Code: E11.9

Type 2 Diabetes Mellitus Without Complications

Type 2 diabetes mellitus without complications (E11.9) is used when a patient has been diagnosed with type 2 diabetes but does not have any documented complications such as neuropathy, retinopathy, or kidney disease.

Clinical Information

Type 2 diabetes mellitus is a chronic condition that affects the way the body processes blood sugar (glucose). In type 2 diabetes, the body either resists the effects of insulin or doesn't produce enough insulin to maintain normal glucose levels. **Key Characteristics:** - Most common form of diabetes (90-95% of cases) - Usually develops in adults over 45, but increasingly seen in younger populations - Strong association with obesity and sedentary lifestyle - Often manageable with lifestyle changes and oral medications

Coding Guidelines

  • 1Use E11.9 only when no diabetic complications are documented
  • 2If complications exist, use more specific E11.x codes (e.g., E11.21 for diabetic nephropathy)
  • 3Code also any associated conditions such as hypertension or hyperlipidemia
  • 4Document whether controlled, uncontrolled, or inadequately controlled
  • 5Do not use if patient has Type 1 diabetes (use E10.x series)

Common Uses

  • Annual wellness visits for established diabetic patients
  • Diabetes management appointments without complications
  • Medication management for oral hypoglycemics or insulin
  • Routine diabetes monitoring and HbA1c checks
  • Diet and exercise counseling for diabetes control

Related ICD-10 Codes

E11.21Type 2 DM with diabetic nephropathy
E11.22Type 2 DM with diabetic chronic kidney disease
E11.65Type 2 DM with hyperglycemia
E11.36Type 2 DM with diabetic cataract
E11.40Type 2 DM with diabetic neuropathy, unspecified

Documentation Requirements

  • Physician documentation must clearly state 'Type 2 diabetes' or 'DM Type 2'
  • Document absence of complications if using E11.9
  • Include current medications (oral agents, insulin, or both)
  • Note most recent HbA1c value and date
  • Document diabetes control status (controlled/uncontrolled)

Real-World Coding Examples

Patient presents for diabetes follow-up. Type 2 DM on Metformin 1000mg BID. No complications noted. HbA1c 7.2%. → E11.9

58-year-old with Type 2 diabetes mellitus presents for medication refill. No retinopathy, neuropathy, or nephropathy. → E11.9

Established Type 2 diabetic patient for routine check. Blood glucose well controlled on diet and exercise. No complications. → E11.9

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Medical coding for Endocrine, nutritional and metabolic diseases