E13.321Header code — not billable

Other specified diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edema

Short description: Oth diabetes w mild nonprlf diabetic rtnop w macular edema

Chapter
4. Endocrine, nutritional and metabolic diseases
Category
E13
Effective date
October 1, 2026

Related codes in category E13

E13Other specified diabetes mellitusE13.0Other specified diabetes mellitus with hyperosmolarityE13.00Oth diab w hyprosm w/o nonket hyprgly-hypros coma (NKHHC)YesE13.01Oth diabetes mellitus with hyperosmolarity with comaYesE13.1Other specified diabetes mellitus with ketoacidosisE13.10Oth diabetes mellitus with ketoacidosis without comaYesE13.11Oth diabetes mellitus with ketoacidosis with comaYesE13.2Other specified diabetes mellitus with kidney complicationsE13.21Other specified diabetes mellitus with diabetic nephropathyYesE13.22Oth diabetes mellitus with diabetic chronic kidney diseaseYesE13.29Oth diabetes mellitus with oth diabetic kidney complicationYesE13.3Oth diabetes mellitus with ophthalmic complications

Frequently asked questions

What is ICD-10 code E13.321?

E13.321 is an ICD-10-CM diagnosis code for Other specified diabetes mellitus with mild nonproliferative diabetic retinopathy with macular edema.

Is E13.321 a billable code?

No. E13.321 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is E13.321 in?

E13.321 falls under Chapter 4: Endocrine, nutritional and metabolic diseases.

When did E13.321 become effective?

E13.321 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to E13.321?

E13.321 belongs to category E13, which includes 12 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.