What ICD-10 codes are used for IDDM?
Type 1 Diabetes Mellitus, also known as insulin-dependent diabetes mellitus (IDDM), is a chronic metabolic condition classified under ICD-10-CM code E10. It differs from Type 2 diabetes mellitus, which typically develops later in life and is not always insulin-dependent. Though less common, neonatal diabetes mellitus may also fall under similar metabolic diseases, but requires a different code set depending on age and onset.
Although older documentation may refer to broad codes like E10.0–E10.4, these are category codes only and not valid for billing. Instead, providers should use specific subcodes for proper documentation and reimbursement.
- E10.9 – Type 1 diabetes mellitus without complications: Used when a patient has IDDM but no associated complications.
- E10.10 – With ketoacidosis without coma: Applicable for diabetic ketoacidosis (DKA) without coma.
- E10.11 – With ketoacidosis with coma: Used when DKA is present along with coma — a medical emergency.
- E10.21 – With diabetic nephropathy: For cases involving kidney damage from long-standing diabetes.
- E10.22 – With diabetic chronic kidney disease: Used when the patient has chronic kidney disease due to IDDM.
- E10.29 – With other diabetic kidney complications: Captures other renal issues related to Type 1 diabetes.
- E10.31 – E10.39 – With ophthalmic complications: This commonly includes E10.31 – unspecified diabetic retinopathy, E10.36 – diabetic cataract, and E10.39 – other ophthalmic complications.
- E10.40 – E10.49 – With neurological complications: This range typically includes E10.40 – diabetic neuropathy, unspecified, E10.42 – diabetic polyneuropathy, E10.49 – other neurological complications.
- E10.65 – With hyperglycemia: Used when blood glucose levels are significantly elevated.
- E10.69 – With other specified complications: For complications not classified elsewhere (e.g., skin or oral complications).