E11.1 is the authoritative medical code for Type 2 diabetes mellitus with ketoacidosis. This classification is used in medical billing and clinical recording to specify the clinical criteria for type 2 diabetes mellitus with ketoacidosis (ICD-10-CM E11.1), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Type 2 diabetes mellitus with ketoacidosis is a non-billable ICD-10-CM category code E11.1. A more specific billable subcode must be selected for claims submission. Includes: diabetes mellitus due to insulin secretory defect; diabetes NOS; insulin resistant diabetes mellitus. Excludes1 (not coded here): diabetes mellitus due to underlying condition E08.-; 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.-. 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.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for E11.1 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- diabetes mellitus due to insulin secretory defect
- diabetes NOS
- insulin resistant diabetes mellitus
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- diabetes mellitus due to underlying condition E08.-
- 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.-
Use Additional Code
Supplementary codes the tabular list directs you to add.
- 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
Frequently Asked Questions (FAQ) & Clinical Guidance
Can E11.1 be billed directly?
No. E11.1 (Type 2 diabetes mellitus with ketoacidosis) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
What can't be coded together with E11.1?
Per Excludes1 instructions, E11.1 must not be reported with: diabetes mellitus due to underlying condition (E08.-); drug or chemical induced diabetes mellitus (E09.-); gestational diabetes (O24.4-); neonatal diabetes mellitus (P70.2).
Is an additional code needed with E11.1?
Use additional code(s) to specify: code to identify control using:; injectable non-insulin antidiabetic drugs (Z79.85); insulin (Z79.4); oral antidiabetic drugs (Z79.84).
Codes in This Family (2)
Official ICD-10-CM classifications in the same code family as E11.1, with their registry titles.
- E11.10 — Type 2 diabetes mellitus with ketoacidosis without coma
- E11.11 — Type 2 diabetes mellitus with ketoacidosis with coma
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code E08.1
Diabetes mellitus due to underlying condition with ketoacidosis
ICD Code E09.1
Drug or chemical induced diabetes mellitus with ketoacidosis