Is E09 a billable ICD-10-CM code?

No. E09 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does E09 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 E09?

E09 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

E09

E09 — Drug or chemical induced diabetes mellitus

Non-billable headerICD-10-CM

E09 is a non-billable header ICD-10-CM code for drug or chemical induced diabetes mellitus. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

diabetes mellitus due to underlying condition (E08.-)
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.-)
type 2 diabetes mellitus (E11.-)

Code first

The underlying condition must be sequenced before this code.

poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)

Use additional code

Add a secondary code to capture the detail described below.

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
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)

Other codes that can never be billed with E09

These codes carry an Excludes1 note pointing at E09. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E09 alone.

E08Diabetes mellitus due to underlying condition
E10Type 1 diabetes mellitus
E11Type 2 diabetes mellitus
E13Other specified diabetes mellitus
E16.0Drug-induced hypoglycemia without coma
H28Cataract in diseases classified elsewhere
H36Retinal disorders in diseases classified elsewhere

Risk adjustment

E09 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.

Code to one of these instead E09

9 child codes. Green means billable.

Questions about E09

Is E09 a billable ICD-10-CM code?: No. E09 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E09 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 E09?: E09 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.