ICD-10-CM Code Q24.9

Congenital malformation of heart, unspecified

Version 2020 Billable Code POA Exempt

Valid for Submission

Q24.9 is a billable code used to specify a medical diagnosis of congenital malformation of heart, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code Q24.9 might also be used to specify conditions or terms like abnormality of left atrioventricular valve chordae tendinae, acyanotic congenital heart disease, anophthalmia and megalocornea with cardiopathy and skeletal anomalies syndrome, associated pulmonary arterial hypertension, beemer ertbruggen syndrome, brachydactyly, mesomelia, intellectual disability, heart defect syndrome, etc The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

Short Description:Congenital malformation of heart, unspecified
Long Description:Congenital malformation of heart, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code Q24.9:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Congenital anomaly of heart
  • Congenital disease of heart

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code Q24.9 are found in the index:


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

  • Abnormality of left atrioventricular valve chordae tendinae
  • Acyanotic congenital heart disease
  • Anophthalmia and megalocornea with cardiopathy and skeletal anomalies syndrome
  • Associated pulmonary arterial hypertension
  • Beemer Ertbruggen syndrome
  • Brachydactyly, mesomelia, intellectual disability, heart defect syndrome
  • Brain malformation, congenital heart disease, postaxial polydactyly syndrome
  • Cardiac anomaly and heterotaxy syndrome
  • Cardio-acral-facial syndrome
  • Cardiocranial syndrome Pfeiffer type
  • Cardio-facio-cutaneous syndrome
  • Cardiospondylocarpofacial syndrome
  • Cataract, congenital heart disease, neural tube defect syndrome
  • Central cyanosis
  • Choanal atresia
  • Choanal atresia, hearing loss, cardiac defect, craniofacial dysmorphism syndrome
  • Cleft lip and cleft palate with intestinal malrotation and cardiopathy syndrome
  • Cognitive impairment, coarse facies, heart defects, obesity, pulmonary involvement, short stature, skeletal dysplasia syndrome
  • Coloboma, congenital heart disease, ichthyosiform dermatosis, intellectual disability ear anomaly syndrome
  • Complex congenital heart defect
  • Congenital abnormality of left atrioventricular valve chordae tendinae in double inlet ventricle
  • Congenital abnormality of left atrioventricular valve in double inlet ventricle
  • Congenital abnormality of relationship of cardiac component
  • Congenital atresia of nares
  • Congenital atresia of nasopharynx
  • Congenital atresia of pharynx
  • Congenital blepharophimosis
  • Congenital cardiovascular disorders during pregnancy, childbirth and the puerperium
  • Congenital conductive hearing loss
  • Congenital heart disease
  • Congenital heart disease in pregnancy
  • Congenital hypoplasia of pancreas
  • Cyanotic congenital heart disease
  • Developmental hereditary disorder
  • Erythrocytosis due to cardiovascular disease
  • Erythrocytosis due to cyanotic congenital heart disease
  • Facial dysmorphism, conductive hearing loss, heart defect syndrome
  • Genitopalatocardiac syndrome
  • Grange syndrome
  • Hadziselimovic syndrome
  • Heart defect and limb shortening syndrome
  • Heart failure due to end stage congenital heart disease
  • Heart-hand syndrome Slovenian type
  • Hereditary dysplasia of blood vessel
  • Intellectual disability, congenital heart disease, blepharophimosis, blepharoptosis and hypoplastic teeth
  • Lung agenesis with heart defect and thumb anomaly syndrome
  • McKusick Kaufman syndrome
  • Microcephaly, seizure, intellectual disability, heart disease syndrome
  • Multiple congenital cardiac defects
  • Neck webbing
  • Pancreatic hypoplasia, diabetes mellitus, congenital heart disease syndrome
  • PHAVER syndrome
  • Polysyndactyly
  • Polysyndactyly and cardiac malformation syndrome
  • Pulmonary arterial hypertension associated with congenital heart disease
  • Pure gonadal dysgenesis
  • Pure gonadal dysgenesis 46,XY
  • Regional congenital anomaly
  • Short stature with webbed neck and congenital heart disease syndrome
  • Situs ambiguus
  • Sonoda syndrome
  • Thomas syndrome
  • VACTEL syndrome
  • VACTERL syndrome with hydrocephalus
  • Verloove Vanhorick Brubakk syndrome
  • Vertebral abnormalities, anal atresia, cardiac abnormalities, tracheo-esophageal fistula, renal anomalies, limb defects syndrome

Diagnostic Related Groups

The ICD-10 code Q24.9 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Present on Admission (POA)

Q24.9 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 Indicator CodePOA Reason 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 Q24.9 to ICD-9

  • 746.9 - Cong heart anomaly NOS (Approximate Flag)

Code Classification

  • Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • Congenital malformations of the circulatory system (Q20-Q28)
      • Other congenital malformations of heart (Q24)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients

Congenital Heart Defects

A congenital heart defect is a problem with the structure of the heart. It is present at birth. Congenital heart defects are the most common type of birth defect. The defects can involve the walls of the heart, the valves of the heart, and the arteries and veins near the heart. They can disrupt the normal flow of blood through the heart. The blood flow can slow down, go in the wrong direction or to the wrong place, or be blocked completely.

Doctors use a physical exam and special heart tests to diagnose congenital heart defects. They often find severe defects during pregnancy or soon after birth. Signs and symptoms of severe defects in newborns include

  • Rapid breathing
  • Cyanosis - a bluish tint to the skin, lips, and fingernails
  • Fatigue
  • Poor blood circulation

Many congenital heart defects cause few or no signs and symptoms. They are often not diagnosed until children are older.

Many children with congenital heart defects don't need treatment, but others do. Treatment can include medicines, catheter procedures, surgery, and heart transplants. The treatment depends on the type of the defect, how severe it is, and a child's age, size, and general health.

NIH: National Heart, Lung, and Blood Institute

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