Other specified diabetes mellitus (E13) ICD-10-CM

About the E13 Code Range

ICD-10 code E13 categorizes "Other specified diabetes mellitus," covering diabetes types that don't fit into typical type 1 or type 2 classifications. This includes various complications like hyperosmolarity, ketoacidosis, and specific organ-related issues such as kidney, eye, neurological, and circulatory problems.

The set of codes under E13 is used to report diabetes caused by different underlying factors or with distinct clinical presentations, often referred to as secondary diabetes or atypical diabetes. For example, E13.00 indicates secondary diabetes with hyperosmolarity without coma, while E13.01 involves hyperosmolar coma. Ketoacidosis cases are coded as E13.10 (without coma) or E13.11 (with coma). Eye complications, such as diabetic retinopathy of varying severity and diabetic macular edema, appear in codes from E13.31 to E13.37X9. Codes like E13.42 cover diabetic polyneuropathy, and circulatory complications fall under E13.51 to E13.59, which includes peripheral vascular disease related to secondary diabetes. Additionally, codes E13.61 to E13.69 capture arthropathy, skin, oral issues, hypoglycemia, hyperglycemia, and other specified complications. The base code E13.9 represents other specified diabetes mellitus without complications, including several rare or genetic forms such as maturity-onset diabetes of the young (MODY) and neonatal diabetes. These detailed codes help clinicians and coders accurately capture less common diabetes conditions and their complications in medical records and billing.