MCMedicalCodingSoftware
E11

E11: Type 2 diabetes mellitus

Non-billable headerICD-10-CM

E11 is a non-billable header ICD-10-CM code for type 2 diabetes mellitus. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • 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

Add a secondary code to capture the detail described below.

  • 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)

Includes

Conditions this code covers.

  • diabetes (mellitus) due to insulin secretory defect
  • diabetes NOS
  • insulin resistant diabetes (mellitus)

Other codes that can never be billed with E11

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • E08Diabetes mellitus due to underlying condition
  • E09Drug or chemical induced diabetes mellitus
  • E10Type 1 diabetes mellitus
  • E16.1Other hypoglycemia
  • E16.2Hypoglycemia, unspecified
  • E87.2Acidosis
  • H28Cataract in diseases classified elsewhere
  • H36Retinal disorders in diseases classified elsewhere

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

The condition this code belongs to

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead E11

10 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.