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E08

Non-billable

Diabetes mellitus due to underlying condition

E08 is the ICD-10-CM code for Diabetes mellitus due to underlying condition. It is a non-billable category code — use a more specific child code such as E08.0 for billing.

Status
Header (non-billable)
Chapter
E00-E89
Subcodes
9
Edition
FY2026

E00-E89 Endocrine, nutritional and metabolic diseases

Excludes1 — not coded here

  • •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 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 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)

Frequently asked questions

What is ICD-10 code E08?
E08 is the ICD-10-CM code for "Diabetes mellitus due to underlying condition". It falls under E00-E89 Endocrine, nutritional and metabolic diseases.
Is E08 a billable code?
No — E08 is a non-billable header code. Use a more specific child code (such as E08.0) for billing.
What are the subcodes of E08?
E08 has 9 more specific child codes, including E08.0, E08.1, E08.2.
What is excluded from E08?
Excludes1 (not coded here): drug or chemical induced diabetes mellitus (E09.-); gestational diabetes (O24.4-); neonatal diabetes mellitus (P70.2); postpancreatectomy diabetes mellitus (E13.-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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