2027 ICD-10-CM Diagnosis Code Q28.0Arteriovenous malformation of precerebral vessels

ICD-10-CM Codes›Q00-Q99›Q20-Q28›Q28

ICD-10-CM Q28.0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Q28.0 is a billable ICD-10-CM diagnosis code for arteriovenous malformation of precerebral vessels. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 299 through 301. 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 30 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
Q28.0
Billable Status
Yes — Valid for Submission
Code Describes
Arteriovenous malformation of precerebral vessels
Short Description
Arteriovenous malformation of precerebral vessels
Same as the full description in the CMS dataset.
Parent Code
Q28
Other congenital malformations of circulatory system

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ20-Q28Congenital malformations of the circulatory system
CategoryQ28Other congenital malformations of circulatory system
This CodeQ28.0Arteriovenous malformation of precerebral vessels

Present on Admission (POA)Billing

Q28.0 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.

  • Arteriovenous malformation of precerebral vessels

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Q28.0: its own notes plus those printed at Q28 and Chapter 17. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Congenital arteriovenous precerebral aneurysm (nonruptured)

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Q28 Other congenital malformations of circulatory system applies to 6 codes
  • congenital aneurysm NOS (Q27.8)
  • congenital coronary aneurysm (Q24.5)
  • ruptured cerebral arteriovenous malformation (I60.8)
  • ruptured malformation of precerebral vessels (I72.0)

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 Q28 Other congenital malformations of circulatory system applies to 6 codes
  • congenital peripheral aneurysm (Q27.8)
  • congenital pulmonary aneurysm (Q25.79)
  • congenital retinal aneurysm (Q14.1)
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.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Q28.0, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming Q28.0: they are not reported together with it, unless the two conditions are unrelated.

  • I67.1 Cerebral aneurysm, nonruptured
    congenital cerebral aneurysm, nonruptured (Q28.-) names Q28.-, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming Q28.0: its condition is not part of those codes, and both may be reported when the patient has both.

  • Q27 Other congenital malformations of peripheral vascular system
    anomalies of cerebral and precerebral vessels (Q28.0-Q28.3)
  • Q27.3 Arteriovenous malformation (peripheral)
    arteriovenous malformation of precerebral vessels (Q28.0)

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

Arteriovenous Malformations

Arteriovenous malformations (AVMs) are defects in your vascular system. Your vascular system is your body's network of blood vessels. It includes your:

The full article covers:

  • What are arteriovenous malformations (AVMs)?
  • What causes arteriovenous malformations (AVMs)?
  • What are the symptoms of arteriovenous malformations (AVMs)?
  • How are arteriovenous malformations (AVMs) diagnosed?
  • What are the treatments for arteriovenous malformations (AVMs)?

Read the full article at MedlinePlus

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

Convert Q28.0 to ICD-9-CMHistory

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

ICD-9-CM
747.89 Circulatory anomaly 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 Q28.0Overview

What is the ICD-10 code for arteriovenous malformation of precerebral vessels?

The ICD-10-CM code for arteriovenous malformation of precerebral vessels is Q28.0 (sometimes written as Q280). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Q28.0 (Other congenital malformations of circulatory system) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report arteriovenous malformation of precerebral vessels on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Q28.0 group to?

When arteriovenous malformation of precerebral vessels is the principal diagnosis on an inpatient stay, it groups to MS-DRG 301, 300, 299, with relative weights from 0.7132 to 1.5840 depending on complications. Higher weights mean higher Medicare reimbursement.

Is Q28.0 a CC or MCC?

CMS lists Q28.0 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 30 closely related codes in its exclusion list.

Is Q28.0 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 arteriovenous malformation of precerebral vessels on inpatient claims. The code appears in the Congenital malformations of the circulatory system (Q20-Q28) range of the CMS exempt list.