E08 – Diabetes mellitus due to underlying condition

ICD-10-CM 2027 diagnosis code · Diabetes mellitus

Non-billable header

ICD-10-CM code E08

Code: E08 (claims format: E08)
Description: Diabetes mellitus due to underlying condition
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 4. Endocrine, nutritional and metabolic diseases (E00-E89)
Block: E08-E13 Diabetes mellitus

Billable codes under E08

E08 is a header code and cannot be used on claims. Choose the most specific code:

E08.0 – Diabetes mellitus due to underlying condition with hyperosmolarityHeader (more codes below)
E08.1 – Diabetes mellitus due to underlying condition with ketoacidosisHeader (more codes below)
E08.2 – Diabetes mellitus due to underlying condition with kidney complicationsHeader (more codes below)
E08.3 – Diabetes mellitus due to underlying condition with ophthalmic complicationsHeader (more codes below)
E08.4 – Diabetes mellitus due to underlying condition with neurological complicationsHeader (more codes below)
E08.5 – Diabetes mellitus due to underlying condition with circulatory complicationsHeader (more codes below)
E08.6 – Diabetes mellitus due to underlying condition with other specified complicationsHeader (more codes below)
E08.8 – Diabetes mellitus due to underlying condition with unspecified complicationsBillable
E08.9 – Diabetes mellitus due to underlying condition without complicationsBillable

Notes for 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.-)
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, in the block E08-E13 (Diabetes mellitus).

Is E08 a billable code?

No. E08 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.