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ICD-10-CM 2027 diagnosis code

E08Diabetes mellitus due to underlying condition

Not billable — use a more specific code

E08 is a header code, so it can't be reported by itself. Choose one of the 9 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About E08

E08 is the ICD-10-CM diagnosis code for diabetes mellitus due to underlying condition. It belongs to block E08-E13 (diabetes mellitus) and chapter 4 (endocrine, nutritional and metabolic diseases). It is a header code, so it can't be reported by itself; one of its 9 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: E08.0 (with hyperosmolarity), E08.1 (with ketoacidosis), E08.2 (with kidney complications), E08.3 (with ophthalmic complications), E08.4 (with neurological complications), E08.5 (with circulatory complications), E08.6 (with other specified complications), E08.8 (with unspecified complications) and 1 more.

Don't report E08 together with the conditions in its Excludes1 note: drug or chemical induced diabetes mellitus (E09.-), gestational diabetes (O24.4-), neonatal diabetes mellitus (P70.2), postpancreatectomy diabetes mellitus (E13.-) and 4 more.

Code first the underlying condition, such as: congenital rubella (P35.0), Cushing's syndrome (E24.-), cystic fibrosis (E84.-), malignant neoplasm (C00-C96) and 2 more.

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 has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under E08

Coding notes

Excludes1Not coded here — never report together with this code
  • 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.-)
  • type 2 diabetes mellitus (E11.-)
Code firstSequence the underlying condition first
  • the underlying condition, such as:
  • congenital rubella (P35.0)
  • Cushing's syndrome (E24.-)
  • cystic fibrosis (E84.-)
  • malignant neoplasm (C00-C96)
  • malnutrition (E40-E46)
  • pancreatitis and other diseases of the pancreas (K85-K86.-)
Use additional codeAdd a secondary code to fully describe the condition
  • 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)

Notes that apply from higher levels

Instructions written at a parent level also apply to E08.

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

Codes whose notes reference E08

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
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about E08

Is E08 billable?

No. E08 is a header code. Report one of its more specific subcodes instead.