E11UpcomingCategory · further specificity required

Type 2 diabetes mellitus

Code-level instructions

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)

Excludes 1

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.-)

Chapters 4 · Inherited instructions

Excludes 1

transitory endocrine and metabolic disorders specific to newborn (P70-P74)

More specific codes

Claims & coverage

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.

Official coding guidelines → · CMS ↗

First observed · 2015-10-01

Code history

Latest recorded change · FY2025

ChangedUnchanged

FY2025

Effective from 2024-10-01

Code-level rules changed

Type 2 diabetes mellitus

Category — select a more specific code

CDC/NCHS · FY2025

All editions (19)

All editions	Effective from	Code history
FY2016	2015-10-01	First observed
FY2017	2016-10-01	Code-level rules changed
FY2018	2017-10-01	No tabular change
FY2019	2018-10-01	No tabular change
FY2020	2019-10-01	No tabular change
FY2020 · April	2020-04-01	No tabular change
FY2021	2020-10-01	No tabular change
FY2021 · 01-01	2021-01-01	No tabular change
FY2022	2021-10-01	No tabular change
FY2022 · 04-01	2022-04-01	No tabular change
FY2023	2022-10-01	No tabular change
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	No tabular change
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	Code-level rules changed
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	No tabular change
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

Includes

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

Excludes 1

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)

Inherited instructions

Chapters 4 · Endocrine, nutritional and metabolic diseases (E00-E89)

Excludes 1

transitory endocrine and metabolic disorders specific to newborn (P70-P74)

Note

All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.

More specific codes

Related codes

Official titles and instructions are preserved in their source language. Official sources ↗

References from other codes (7)

E08 · Diabetes mellitus due to underlying condition

Excludes 1 · type 2 diabetes mellitus (E11.-)

E09 · Drug or chemical induced diabetes mellitus

Excludes 1 · type 2 diabetes mellitus (E11.-)

E10 · Type 1 diabetes mellitus

Excludes 1 · type 2 diabetes mellitus (E11.-)

E87.0 · Hyperosmolality and hypernatremia

Excludes 2 · diabetes with hyperosmolarity (E08, E09, E11, E13 with final characters .00 or .01)

E87.2 · Acidosis

Excludes 1 · diabetic acidosis - see categories E08-E10, E11, E13 with ketoacidosis

O24.1 · Pre-existing type 2 diabetes mellitus, in pregnancy, childbirth and the puerperium

Use additional code · from category E11 to further identify any manifestations

O24.3 · Unspecified pre-existing diabetes mellitus in pregnancy, childbirth and the puerperium

Use additional code · from category E11 to further identify any manifestation