---
title: "ICD-10-CM E11.638: Type 2 diabetes mellitus with other… | BillingBrief"
description: "E11.638 is type 2 diabetes with a mouth (oral) complication other than gum disease. If periodontal disease is documented, use E11.630."
canonical: "https://billingbrief.com/icd10/e11.638/"
language: "en"
---

# E11.638 Type 2 diabetes mellitus with other oral complications

ICD-10-CM · [CMS code reference](#source)

E11.638 is type 2 diabetes with a mouth (oral) complication other than gum disease. If periodontal disease is documented, use E11.630.

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Includes

-   diabetes (mellitus) due to insulin secretory defect
-   diabetes NOS
-   insulin resistant diabetes (mellitus)

### Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

-   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

Add a second code for the following, when documented.

-   code to identify control using:
-   injectable non-insulin antidiabetic drugs ([Z79.85](https://billingbrief.com/icd10/z79.85/))
-   insulin ([Z79.4](https://billingbrief.com/icd10/z79.4/))
-   oral antidiabetic drugs ([Z79.84](https://billingbrief.com/icd10/z79.84/))
-   oral hypoglycemic drugs ([Z79.84](https://billingbrief.com/icd10/z79.84/))

## Related codes

-   [`E11.621` Type 2 diabetes mellitus with foot ulcer ICD-10-CM](https://billingbrief.com/icd10/e11.621/)
-   [`E11.622` Type 2 diabetes mellitus with other skin ulcer ICD-10-CM](https://billingbrief.com/icd10/e11.622/)
-   [`E11.628` Type 2 diabetes mellitus with other skin complications ICD-10-CM](https://billingbrief.com/icd10/e11.628/)
-   [`E11.630` Type 2 diabetes mellitus with periodontal disease ICD-10-CM](https://billingbrief.com/icd10/e11.630/)
-   [`E11.641` Type 2 diabetes mellitus with hypoglycemia with coma ICD-10-CM](https://billingbrief.com/icd10/e11.641/)
-   [`E11.649` Type 2 diabetes mellitus with hypoglycemia without coma ICD-10-CM](https://billingbrief.com/icd10/e11.649/)
-   [`E11.65` Type 2 diabetes mellitus with hyperglycemia ICD-10-CM](https://billingbrief.com/icd10/e11.65/)
-   [`E11.69` Type 2 diabetes mellitus with other specified complication ICD-10-CM](https://billingbrief.com/icd10/e11.69/)

## Common questions

### Is E11.638 a billable code?

Yes. E11.638 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

E11 Type 2 diabetes mellitus

Chapter

Endocrine, nutritional and metabolic diseases

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).