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ICD-10-CM 2027 diagnosis code

E11.AType 2 diabetes mellitus without complications in remission

✓ Billable / specificQuestionable admission

E11.A is a valid, billable ICD-10-CM code for type 2 diabetes mellitus without complications in remission. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code last changed in FY2026 (effective October 1, 2025). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About E11.A

E11.A is the ICD-10-CM diagnosis code for type 2 diabetes mellitus without complications in remission. It belongs to category E11 (type 2 diabetes mellitus), block E08-E13 (diabetes mellitus) and chapter 4 (endocrine, nutritional and metabolic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within E11, choose E11.A (without complications in remission) only when documentation doesn't support a more specific option: with hyperosmolarity (E11.0), with ketoacidosis (E11.1), with kidney complications (E11.2), with ophthalmic complications (E11.3), with neurological complications (E11.4), with circulatory complications (E11.5), with other specified complications (E11.6), with unspecified complications (E11.8) and 1 more.

Don't report E11.A together with the conditions in its Excludes1 note: type 2 diabetes mellitus, with complications (E11.0-E11.8) and type 2 diabetes mellitus, without complications not in remission (E11.9).

Use an additional code to identify control using: injectable non-insulin antidiabetic drugs (Z79.85), insulin (Z79.4), oral antidiabetic drugs (Z79.84) and oral hypoglycemic drugs (Z79.84).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 637 (Diabetes with MCC, relative weight 1.4129), DRG 638 (Diabetes with CC, relative weight 0.9019) and DRG 639 (Diabetes without CC/MCC, relative weight 0.6376), in MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

When it is the principal diagnosis, Medicare considers it a questionable reason for an inpatient admission, so claims may be reviewed.

It was added in FY2026, effective October 1, 2025.

Coding notes

Excludes1Not coded here — never report together with this code
  • type 2 diabetes mellitus, with complications (E11.0-E11.8)
  • type 2 diabetes mellitus, without complications not in remission (E11.9)

Notes that apply from higher levels

Instructions written at a parent level also apply to E11.A.

› From E11 Type 2 diabetes mellitus
Includes
  • diabetes (mellitus) due to insulin secretory defect
  • diabetes NOS
  • insulin resistant diabetes (mellitus)
Excludes1
  • diabetes mellitus due to underlying condition (E08.-)
  • drug or chemical induced diabetes mellitus (E09.-)
  • gestational diabetes (O24.4-)
  • neonatal diabetes mellitus (P70.2)
  • postpancreatectomy diabetes mellitus (E13.-)
  • postprocedural diabetes mellitus (E13.-)
  • secondary diabetes mellitus NEC (E13.-)
  • type 1 diabetes mellitus (E10.-)
Use additional code
  • code to identify control using:
  • injectable non-insulin antidiabetic drugs (Z79.85)
  • insulin (Z79.4)
  • oral antidiabetic drugs (Z79.84)
  • oral hypoglycemic drugs (Z79.84)

Broader instructions also apply from Chapter 4: Endocrine, nutritional and metabolic diseases.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to E11.A.

Codes whose notes reference E11.A

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 10 · Endocrine, Nutritional and Metabolic Diseases and Disorders

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2026 (effective 10/1/2025): Added
  • No changes since FY2026.

Common questions about E11.A

Is E11.A billable?

Yes. E11.A is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can E11.A be used as a principal diagnosis?

It can, but When it is the principal diagnosis, Medicare considers it a questionable reason for an inpatient admission, so claims may be reviewed.

Is E11.A a CC or MCC?

No. E11.A is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does E11.A group to?

E11.A is used in the MS-DRG v44.0 logic for MS-DRG 637 (Diabetes with MCC), MS-DRG 638 (Diabetes with CC) and MS-DRG 639 (Diabetes without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.