2026 ICD-10-CM Diagnosis Code E11.AType 2 diabetes mellitus without complications in remission

ICD-10-CM Codes›E00–E89›E08-E13›E11

ICD-10-CM E11.A
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E11.A is a billable ICD-10-CM diagnosis code for type 2 diabetes mellitus without complications in remission. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 637 through 639. The code is flagged as a questionable admission, since it rarely justifies inpatient admission on its own.

Code Identity

ICD-10-CM Code
E11.A
Billable Status
Yes — Valid for Submission
Code Describes
Type 2 diabetes mellitus without complications in remission
Short Description
Type 2 diabetes mellitus without complications in remission
Same as the full description in the CMS dataset.
Parent Code
E11
Type 2 diabetes mellitus

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE08-E13Diabetes mellitus
CategoryE11Type 2 diabetes mellitus
This CodeE11.AType 2 diabetes mellitus without complications in remission

Code EditsBilling

Medicare Code Editor checks that affect claim validity for E11.A.

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.

Coding GuidelinesGuidance

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.

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • type 2 diabetes mellitus, with complications E11.0 E11.8
  • type 2 diabetes mellitus, without complications not in remission E11.9

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Diabetes, diabetic(mellitus) (sugar)
      • type 2
        • without complications in remission
    • Diabetes, diabetic(mellitus) (sugar)
      • without complications in remission

Code History & ChangesHistory

New Code E11.A was added to the ICD-10-CM code set for FY 2026, effective October 1, 2025.

Replacement E11.A replaces the following previously assigned code(s):

  • E11.9 - Type 2 diabetes mellitus without complications
FY 2026AddedAdded to the ICD-10-CM code setEffective October 1, 2025.
FY 2026CurrentRevised in the current code setEffective October 1, 2025 through September 30, 2026.

Questions About E11.AOverview

Is E11.A (Type 2 diabetes mellitus) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report type 2 diabetes mellitus without complications in remission on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does E11.A group to?

When type 2 diabetes mellitus without complications in remission is the principal diagnosis on an inpatient stay, it groups to MS-DRG 637, 638, 639, with relative weights from 0.6212 to 1.4367 depending on complications. Higher weights mean higher Medicare reimbursement.

Does E11.A justify an inpatient admission?

Not on its own. The Medicare Code Editor lists this code as a questionable admission because type 2 diabetes mellitus without complications in remission is not usually sufficient justification for admission to an acute care hospital.