E08.329 – Diabetes mellitus due to underlying condition with mild nonproliferative diabetic retinopathy without macular edema

ICD-10-CM 2027 diagnosis code · Diabetes mellitus

Non-billable header

ICD-10-CM code E08.329

Code: E08.329 (claims format: E08329)
Description: Diabetes mellitus due to underlying condition with mild nonproliferative diabetic retinopathy without macular edema
Short description: Diab d/t undrl cond w mild nonprlf diab rtnop w/o mclr edema
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
Parent codes: E08 › E08.3 › E08.32

Billable codes under E08.329

E08.329 is a header code and cannot be used on claims. Choose the most specific code:

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care.

Character	Meaning
`1`	right eye
`2`	left eye
`3`	bilateral
`9`	unspecified eye

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

E08 – Diabetes mellitus due to underlying condition

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)

E08.32 – Diabetes mellitus due to underlying condition with mild nonproliferative diabetic retinopathy

Applicable to:

Diabetes mellitus due to underlying condition with nonproliferative diabetic retinopathy NOS

7th character note:

One of the following 7th characters is to be assigned to codes in subcategory E08.32 to designate laterality of the disease:

Index terms for E08.329

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in E08.32

E08.321 – Diabetes mellitus due to underlying condition with mild nonproliferative diabetic retinopathy with macular edemaHeader

Frequently asked questions

What is ICD-10 code E08.329?

E08.329 is the ICD-10-CM code for diabetes mellitus due to underlying condition with mild nonproliferative diabetic retinopathy without macular edema, in the block E08-E13 (Diabetes mellitus).

Is E08.329 a billable code?

No. E08.329 is a header code with more specific child codes; report one of the billable codes listed above.

What category does E08.329 belong to?

It belongs to category E08 – Diabetes mellitus due to underlying condition.

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.