The ICD-10-CM code for diabetic ketoacidosis in type 2 diabetes is E11.10 (Type 2 diabetes mellitus with ketoacidosis without coma), a billable code reported when ketoacidosis occurs in type 2 diabetes without associated coma.
Primary codes
Billable
Billable
Extension
—
7th character
—
POA exempt
No
Coding risks
- Coding a suspected or rule-out condition as confirmed
Hierarchy
Code comparison
Compare key differences between related codes to select the most specific option.
| Code | Description | Scenario |
|---|---|---|
| E11.10 | Type 2 diabetes mellitus with ketoacidosis without coma | T2DM with documented diabetic ketoacidosis, patient alert and no coma noted. |
| E11.11 | Type 2 diabetes mellitus with ketoacidosis with coma | T2DM with ketoacidosis and documented coma on presentation or during the encounter. |
Select the most specific code supported by the encounter documentation. More specific codes improve reimbursement accuracy and reduce audit risk.
Code ranges
Type 2 diabetes mellitus
Category for type 2 diabetes mellitus, with subdivisions identifying associated complications, manifestations, and long-term insulin or drug use.
Diabetes mellitus
Sub-chapter covering all forms of diabetes mellitus, classified by underlying cause, type, and presence of complications.
Type 1 diabetes mellitus
Category for type 1 diabetes mellitus with its complications, including ketoacidosis, kidney, ophthalmic, neurological, and circulatory manifestations.
Diabetes mellitus due to underlying condition
Category for diabetes caused by an underlying condition such as cystic fibrosis, pancreatitis, or neoplasm, with associated complications.
Other specified diabetes mellitus
Category for other specified diabetes mellitus types, including postpancreatectomy and postprocedural diabetes, with their associated complications.
Coding risks
Avoid these common coding issues when reporting Diabetic Ketoacidosis.
Impact
Assigning E11.10 without explicit diabetes type may miscode as type 1 ketoacidosis (E10.10), the default for DKA presentations.
Mitigation
Consider querying the provider when type is absent rather than inferring from age, BMI, or oral medication use.
Related codes
Ancillary and co-coding
Codes commonly reported with the primary diagnosis on the same claim.
Z-code variants
Family history, personal history, or screening encounter codes related to this condition.
In pregnancy
Pregnancy-specific O-code adaptations used in place of the primary when the condition occurs during or complicates pregnancy.
Differential codes
Alternative or commonly confused codes to consider when documentation suggests a different condition than the primary diagnosis.
Frequently asked questions
No. E87.2 is Excludes1 with E11.10 because acidosis is inherent to ketoacidosis and already captured by the combination code.
References
Compiled from the following authoritative coding references. Last updated 2026-05-15.