The coding landscape for diabetes continues to evolve — and one important addition is ICD-10-CM code E11.A, created to capture Type 2 Diabetes Mellitus (T2DM) without complications in remission.

As remission becomes more common due to medical advancements and lifestyle interventions, accurate documentation and coding are essential.

Let’s break down what this means and how to apply it correctly.

What Does “Type 2 Diabetes in Remission” Mean?

T2DM remission is clinically defined as:

• HbA1c less than 6.5%
   
• Sustained for at least three months
   
• After cessation of all glucose-lowering medications
   

Remission is most commonly achieved through:

• Significant weight loss
   
• Lifestyle modifications (diet and exercise)
   
• Newer classes of antidiabetic medications
   
• Improvements in bariatric surgery outcomes
   

Remission can last months or even years. However, relapse may occur if:

• A healthy weight is not maintained
   
• Physical activity declines
   
• Dietary changes are not sustained
   

Because of this, ongoing monitoring remains critical — even when a patient is considered “in remission.”

Documentation Matters

One of the most important coding principles here is clear provider documentation.

Terms such as:

• “History of T2DM”
   
• “Resolved diabetes”
   

are not synonymous with “Type 2 diabetes in remission.”

If remission status is unclear, a provider query is required for clarification.

Remember:
Remission must be explicitly documented to assign E11.A.

Key Takeaways for Coders

✔ Remission requires documented HbA1c control <6.5% for at least 3 months off medication
✔ Remission must be clearly documented by the provider
✔ E11.A is only used when no diabetic complications are present
✔ If complications exist, code the appropriate E11.x complication code instead
✔ Z98.84 may be added for bariatric surgery history

As remission rates increase due to modern therapies and surgical advances, coders must remain vigilant in distinguishing:

• Resolved vs. remission
   
• History vs. active disease
   
• Remission with vs. without complications
   

Accurate coding ensures appropriate data reporting, reimbursement integrity, and clinical clarity.

Coding Scenarios: When E11.A Applies — and When It Does Not

Scenario 1: T2DM in Remission With Diabetic Complications

Case Example:

A patient with Type 2 DM and peripheral neuropathy underwent bariatric surgery.  The patient who lost a great deal of weight is no longer on diabetic medication, and his physician notes the diabetes is in remission.  Should we code E11.A?

No.

Even though the diabetes is listed as in remission, because of the Excludes1 note under E11.A, we will continue to code E11.42. Code also for the bariatric surgery status, Z98.84

Case Example:

A patient with Type 2 DM underwent bariatric surgery and lost weight.  He is no longer on medication.  There are no complications present.  Should we code E11.A?

Yes.

You’ll assign E11.A, and the same as above, code also for the bariatric status. Z98.84