Is E08.9 a billable ICD-10-CM code?

Yes. E08.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does E08.9 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 E08.9?

E08.9 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 E08.9 (E08) and apply to it just the same.

E08.9

E08.9 — Diabetes mellitus due to underlying condition without complications

Billable / specific codeICD-10-CM

E08.9 is a billable, specific ICD-10-CM code for diabetes mellitus due to underlying condition without complications. It is valid for submission on a claim.

Excludes1 inherited from the categories above E08.9

These are not written on E08.9, but they bind it: a note on a category applies to every code beneath it. Billing E08.9 with anything listed here is a denial.

Written on E08 — Diabetes mellitus due to underlying condition

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.-)
type 2 diabetes mellitus (E11.-)

Other codes that can never be billed with E08.9

These codes carry an Excludes1 note pointing at E08.9. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E08.9 alone.

E10Type 1 diabetes mellitus
E11Type 2 diabetes mellitus
E13Other specified diabetes mellitus
E09Drug or chemical induced diabetes mellitus

Risk adjustment

E08.9 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 38 Diabetes with No, Glycemic, or Unspecified Complications0.166 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

E08.9 is named in 19 Medicare coverage policies — 19 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52464Glucose Monitor - Policy Article
A52501Therapeutic Shoes for Persons with Diabetes - Policy Article
A52507External Infusion Pumps - Policy Article
A52996Billing and Coding: Routine Foot Care

How E08.9 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to E08.9.

Diabetes, diabetic›due to underlying condition

Code history

E08.9 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share E08. If E08.9 is not quite right, the correct code is usually one of these.

Questions about E08.9

Is E08.9 a billable ICD-10-CM code?: Yes. E08.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does E08.9 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 E08.9?: E08.9 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 E08.9 (E08) and apply to it just the same.