2027 ICD-10-CM Diagnosis Code Q25.8Other congenital malformations of other great arteries

ICD-10-CM Codes›Q00-Q99›Q20-Q28›Q25

ICD-10-CM Q25.8
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Q25.8 is a billable ICD-10-CM diagnosis code for other congenital malformations of other great arteries. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 306 through 307. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 57 closely related codes. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Cardiac and circulatory congenital anomalies.

Code Identity

ICD-10-CM Code
Q25.8
Billable Status
Yes — Valid for Submission
Code Describes
Other congenital malformations of other great arteries
Short Description
Other congenital malformations of other great arteries
Same as the full description in the CMS dataset.
Parent Code
Q25
Congenital malformations of great arteries

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ20-Q28Congenital malformations of the circulatory system
CategoryQ25Congenital malformations of great arteries
This CodeQ25.8Other congenital malformations of other great arteries

Present on Admission (POA)Billing

Q25.8 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Congenital malformations of the circulatory system (Q20-Q28).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal intrapericardial course of great arteries
  • Abnormal origin of arterial duct
  • Anatomically corrected malposition with concordant ventriculoarterial connections and parallel great arteries
  • Anomalous insertion of arterial duct
  • Anomalous insertion of arterial duct into distal left pulmonary artery
  • Anomalous insertion of arterial duct into pulmonary trunk
  • Anomalous insertion of arterial duct into right pulmonary artery
  • Anomalous insertion of arterial duct into unknown site
  • Anomalous origin of arterial duct from aortic arch
  • Anomalous origin of arterial duct from aortic diverticulum
  • Anomalous origin of arterial duct from ascending aorta
  • Anomalous origin of arterial duct from distal descending aorta
  • Anomalous origin of arterial duct from left brachiocephalic artery
  • Anomalous origin of arterial duct from left carotid artery
  • Anomalous origin of arterial duct from right carotid artery
  • Anomalous origin of arterial duct from right subclavian artery
  • Anomalous origin of left arterial duct from right aortic arch
  • Anomalous origin of right arterial duct from right aortic arch
  • Anomalous separate origins of internal carotid arteries and external carotid arteries from single aortic arch
  • Arterial duct from innominate artery
  • Arterial duct from left subclavian artery
  • Bilateral arterial duct
  • Bilateral arterial duct with patent left arterial duct and closed right arterial duct
  • Bilateral closed arterial ducts
  • Bilateral ductus arteriosus with closed left ductus arteriosus and patent right ductus arteriosus
  • Compression of trachea
  • Concordant ventriculoarterial connections
  • Congenital abnormality of arterial duct
  • Congenital hypoplasia of right side of chest
  • Congenital malposition of innominate artery
  • Congenital short growth of innominate artery
  • Distal origin of brachiocephalic trunk
  • Ductus arteriosus from retro-esophageal aortic diverticulum
  • Ductus arteriosus from subclavian artery
  • Innominate artery compression syndrome
  • Origin of innominate artery from left side of aortic arch
  • Parallel course of aorta and pulmonary artery
  • Right arterial duct
  • Subaortic course of innominate vein
  • Vascular ring due to aberrant subclavian artery and bilateral arterial ducts
  • Vascular ring with left aortic arch and right arterial duct arising from aberrant retroesophageal innominate artery
  • Vascular ring with malrotation and dextroversion of heart and hypoplasia of right lung and left arterial duct
  • Vascular ring with retrotracheal right pulmonary artery from ascending aorta
  • Vascular ring with right aortic arch and left arterial duct from retroesophageal diverticulum of aorta

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Q25.8: its own notes plus those printed at Chapter 17. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • inborn errors of metabolism (E70-E88)

Notes

General instructions on how these codes are used.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • Codes from this chapter are not for use on maternal records

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MAL001
Cardiac and circulatory congenital anomalies
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Congenital Heart Defects

Congenital heart defects (CHDs) are problems with the structure of the heart. "Congenital" means that that the problems are present at birth. These defects happen when a fetus's heart doesn't develop normally during pregnancy. Congenital heart defects are the most common type of birth defect.

The full article covers:

  • What are congenital heart defects?
  • What causes congenital heart defects?
  • Who is more likely to have a baby with a congenital heart defect?
  • What are the symptoms of congenital heart defects?
  • What other problems do congenital heart defects cause?
  • How are congenital heart defects diagnosed?
  • What are the treatments for congenital heart defects?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Q25.8 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
747.29 Cong anom of aorta NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Q25.8Overview

What is the ICD-10 code for other congenital malformations of other great arteries?

The ICD-10-CM code for other congenital malformations of other great arteries is Q25.8 (sometimes written as Q258). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Q25.8 (Congenital malformations of great arteries) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other congenital malformations of other great arteries on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Q25.8 group to?

When other congenital malformations of other great arteries is the principal diagnosis on an inpatient stay, it groups to MS-DRG 306, 307, with relative weights from 0.9146 to 1.5457 depending on complications. Higher weights mean higher Medicare reimbursement.

Is Q25.8 a CC or MCC?

CMS lists Q25.8 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 57 closely related codes in its exclusion list.

Is Q25.8 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for other congenital malformations of other great arteries on inpatient claims. The code appears in the Congenital malformations of the circulatory system (Q20-Q28) range of the CMS exempt list.