E10.321 – Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edema
ICD-10-CM 2027 diagnosis code · Diabetes mellitus
- Code
E10.321(claims format:E10321)- Description
- Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edema
- Short description
- Type 1 diab w mild nonprlf diabetic rtnop w macular 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
- E10 › E10.3 › E10.32
Billable codes under E10.321
E10.321 is a header code and cannot be used on claims. Choose the most specific code:
- E10.3211 – Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edema, right eyeBillable
- E10.3212 – Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edema, left eyeBillable
- E10.3213 – Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edema, bilateralBillable
- E10.3219 – Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edema, unspecified eyeBillable
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.
E10 – Type 1 diabetes mellitus
- brittle diabetes (mellitus)
- diabetes (mellitus) due to autoimmune process
- diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction
- idiopathic diabetes (mellitus)
- juvenile onset diabetes (mellitus)
- ketosis-prone diabetes (mellitus)
- diabetes mellitus due to underlying condition (E08.-)
- drug or chemical induced diabetes mellitus (E09.-)
- gestational diabetes (O24.4-)
- hyperglycemia NOS (R73.9)
- neonatal diabetes mellitus (P70.2)
- postpancreatectomy diabetes mellitus (E13.-)
- postprocedural diabetes mellitus (E13.-)
- secondary diabetes mellitus NEC (E13.-)
- type 2 diabetes mellitus (E11.-)
E10.32 – Type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy
- Type 1 diabetes mellitus with nonproliferative diabetic retinopathy NOS
- One of the following 7th characters is to be assigned to codes in subcategory E10.32 to designate laterality of the disease:
Index terms for E10.321
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in E10.32
Frequently asked questions
What is ICD-10 code E10.321?
E10.321 is the ICD-10-CM code for type 1 diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edema, in the block E08-E13 (Diabetes mellitus).
Is E10.321 a billable code?
No. E10.321 is a header code with more specific child codes; report one of the billable codes listed above.
What category does E10.321 belong to?
It belongs to category E10 – Type 1 diabetes mellitus.
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.