Is E11.1 a billable ICD-10-CM code?

No. E11.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does E11.1 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Diabetes mellitus (E08-E13).

What cannot be coded together with E11.1?

E11.1 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above E11.1 (E11) and apply to it just the same.

E11.1

E11.1 — Type 2 diabetes mellitus with ketoacidosis

Non-billable headerICD-10-CM

E11.1 is a non-billable header ICD-10-CM code for type 2 diabetes mellitus with ketoacidosis. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above E11.1

These are not written on E11.1, but they bind it: a note on a category applies to every code beneath it. Billing E11.1 with anything listed here is a denial.

Written on E11 — Type 2 diabetes mellitus

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.-)

Other codes that can never be billed with E11.1

These codes carry an Excludes1 note pointing at E11.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E11.1 alone.

E10Type 1 diabetes mellitus
E09Drug or chemical induced diabetes mellitus
E08Diabetes mellitus due to underlying condition

Risk adjustment

E11.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

The condition this code belongs to

Every code for the condition on one page, which one applies when, and the mistake coders make with it.

Type 2 diabetes ICD-10 codes

Code history

E11.1 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead E11.1

2 child codes. Green means billable.

Related codes at this level

Codes that share E11. If E11.1 is not quite right, the correct code is usually one of these.

Questions about E11.1

Is E11.1 a billable ICD-10-CM code?: No. E11.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E11.1 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Diabetes mellitus (E08-E13).
What cannot be coded together with E11.1?: E11.1 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above E11.1 (E11) and apply to it just the same.