2024 ICD-10-CM Diagnosis Code Q28.9

Congenital malformation of circulatory system, unspecified

ICD-10-CM Code:
ICD-10 Code for:
Congenital malformation of circulatory system, unspecified
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Code Navigator:

Code Classification

  • Congenital malformations, deformations and chromosomal abnormalities
    • Congenital malformations of the circulatory system
      • Other congenital malformations of circulatory system

Q28.9 is a billable diagnosis code used to specify a medical diagnosis of congenital malformation of circulatory system, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

Unspecified diagnosis codes like Q28.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Congenital anomaly of cardiovascular system
  • Congenital cardiovascular anomaly in mother complicating childbirth
  • Congenital cardiovascular disorder
  • Congenital cardiovascular disorder in mother complicating pregnancy, childbirth AND/OR puerperium
  • Congenital cardiovascular disorders during pregnancy, childbirth and the puerperium
  • Congenital omphalocele
  • Congenital omphalocele, diaphragmatic hernia, cardiovascular anomalies, radial ray defect syndrome
  • Congenital umbilical hernia
  • Congenital vascular disorder
  • Glaucoma associated with vascular disorder
  • Heart disease in mother complicating pregnancy, childbirth AND/OR puerperium
  • Impaired circulatory system function
  • Neovascular glaucoma
  • Neovascularization of angle
  • Vascular disorder

Clinical Classification

Clinical Information

  • Congenital Cardiovascular Abnormality|Congenital Abnormality of the Circulatory System|Congenital Anomaly of Cardiovascular System|Congenital Cardiovascular Anomaly|Congenital Cardiovascular Disorder

    a heart or vascular abnormality which is inborn or present at birth.
  • Congenital Cardiovascular Disorder

    a heart defect which is inborn or present at birth.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Present on Admission (POA)

Q28.9 is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here.

CMS POA Indicator Options and Definitions

POA IndicatorReason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert Q28.9 to ICD-9-CM

  • ICD-9-CM Code: 747.9 - Circulatory anomaly NOS

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.


[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.