---
title: "ICD-10-CM I25.799: Atherosclerosis of other coronary… | BillingBrief"
description: "ICD-10-CM code I25.799: Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris. Category, related codes, and the official…"
canonical: "https://billingbrief.com/icd10/i25.799/"
language: "en"
---

# I25.799 Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris

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

**Official ICD-10-CM description:** Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris

## Coding notes

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

### Excludes1

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

-   unspecified angina pectoris without atherosclerosis of other coronary artery bypass graft(s) (I20.9)
-   atherosclerosis of bypass graft(s) of transplanted heart without angina pectoris ([I25.812](https://billingbrief.com/icd10/i25.812/))
-   atherosclerosis of coronary artery bypass graft(s) without angina pectoris ([I25.810](https://billingbrief.com/icd10/i25.810/))
-   atherosclerosis of native coronary artery of transplanted heart without angina pectoris ([I25.811](https://billingbrief.com/icd10/i25.811/))

### Excludes2

Not part of this code, but both can be coded when both are documented.

-   non-ischemic myocardial injury (I5A)

### Use additional code

Add a second code for the following, when documented.

-   code, if applicable, to identify:
-   coronary atherosclerosis due to calcified coronary lesion ([I25.84](https://billingbrief.com/icd10/i25.84/))
-   coronary atherosclerosis due to lipid rich plaque ([I25.83](https://billingbrief.com/icd10/i25.83/))
-   code to identify:
-   chronic total occlusion of coronary artery ([I25.82](https://billingbrief.com/icd10/i25.82/))
-   exposure to environmental tobacco smoke (Z77.22)
-   history of tobacco dependence ([Z87.891](https://billingbrief.com/icd10/z87.891/))
-   occupational exposure to environmental tobacco smoke (Z57.31)
-   tobacco dependence (F17.-)
-   tobacco use ([Z72.0](https://billingbrief.com/icd10/z72.0/))

### Code also

A second code may be needed. Sequencing depends on the encounter.

-   the presence of hypertension ([I10](https://billingbrief.com/icd10/i10/)\-I1A)

## Related codes

-   [`I25.761` Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina… ICD-10-CM](https://billingbrief.com/icd10/i25.761/)
-   [`I25.762` Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory… ICD-10-CM](https://billingbrief.com/icd10/i25.762/)
-   [`I25.768` Atherosclerosis of bypass graft of coronary artery of transplanted heart with other… ICD-10-CM](https://billingbrief.com/icd10/i25.768/)
-   [`I25.769` Atherosclerosis of bypass graft of coronary artery of transplanted heart with… ICD-10-CM](https://billingbrief.com/icd10/i25.769/)
-   [`I25.790` Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris ICD-10-CM](https://billingbrief.com/icd10/i25.790/)
-   [`I25.791` Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with… ICD-10-CM](https://billingbrief.com/icd10/i25.791/)
-   [`I25.792` Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris ICD-10-CM](https://billingbrief.com/icd10/i25.792/)
-   [`I25.798` Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina… ICD-10-CM](https://billingbrief.com/icd10/i25.798/)

## Common questions

### Is I25.799 a billable code?

Yes. I25.799 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

I25 Chronic ischemic heart disease

Chapter

Diseases of the circulatory system

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/).