2027 ICD-10-CM Diagnosis Code Q24.9Congenital malformation of heart, unspecified
ICD-10-CM Codes›Q00-Q99›Q20-Q28›Q24
- Billable — Valid for Submission
- POA Exempt
- Chronic Condition
Q24.9 is a billable ICD-10-CM diagnosis code for congenital malformation of heart, unspecified. 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. 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
Code Classification
Present on Admission (POA)Billing
Q24.9 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.
- Abnormality of left atrioventricular valve chordae tendinae
- Acquired abnormality of aorta due to congenital heart anomaly
- Acrocardiofacial syndrome
- Acyanotic congenital heart disease
- Anophthalmia and megalocornea with cardiopathy and skeletal anomalies syndrome
- Aortic aneurysm due to congenital heart disease
- Associated pulmonary arterial hypertension
- Autosomal dominant intellectual disability, craniofacial anomalies, cardiac defects syndrome
- Beemer Ertbruggen syndrome
- Blepharophimosis, intellectual disability syndrome
- Blue skin
- Brachydactyly, mesomelia, intellectual disability, heart defect syndrome
- Brain malformation, congenital heart disease, postaxial polydactyly syndrome
- Cardiac anomaly and heterotaxy syndrome
- Cardiac urogenital syndrome
- Cardio-acral-facial syndrome
- Cardiocranial syndrome Pfeiffer type
- Cardio-facio-cutaneous syndrome
- Cardiospondylocarpofacial syndrome
- Cataract, congenital heart disease, neural tube defect syndrome
- CDK13-related congenital heart defects, intellectual disability, facial dysmorphism 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
- Cleft lip and palate, craniofacial dysmorphism, congenital heart defect, hearing loss syndrome
- Cleft palate, congenital heart defect, intellectual disability 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 relationship of cardiac component
- Congenital aplasia of lung
- Congenital cardiovascular disorders during pregnancy, childbirth and the puerperium
- Congenital cleft hand
- Congenital conductive hearing loss
- Congenital dysplasia of radius
- Congenital heart disease
- Congenital heart disease in pregnancy
- Congenital hypoplasia of pancreas
- Congenital insufficiency of mitral valve
- Congenital vertebral, cardiac, renal anomalies syndrome
- Cyanosis of skin
- Cyanotic attack
- Cyanotic congenital heart disease
- Defect of vertebral segmentation
- Erythrocytosis due to cardiovascular disease
- Erythrocytosis due to cyanotic congenital heart disease
- Erythrocytosis due to tissue hypoxemia
- Eye defects, arachnodactyly, cardiopathy syndrome
- Facial dysmorphism, conductive hearing loss, heart defect syndrome
- Genetic syndromic childhood obesity
- Genitopalatocardiac syndrome
- Grange syndrome
- Hadziselimovic syndrome
- Hamartoma of tongue
- Heart defect and limb shortening syndrome
- Heart defect, tongue hamartoma, polysyndactyly syndrome
- Heart disease in mother complicating pregnancy, childbirth AND/OR puerperium
- Heart failure due to end stage congenital heart disease
- Heart-hand syndrome Slovenian type
- Hereditary dysplasia of blood vessel
- Hypercyanotic spell due to congenital heart disease
- Intellectual disability, cardiac anomalies, short stature, joint laxity syndrome
- Intellectual disability, congenital heart disease, blepharophimosis, blepharoptosis and hypoplastic teeth
- ITPA-related lethal infantile neurological disorder with cataract and cardiac involvement
- Lethal brain and heart developmental defects syndrome
- Lung agenesis with heart defect and thumb anomaly syndrome
- Marfanoid habitus, facial dysmorphism, skeletal abnormality, heart defect syndrome
- Marfanoid physique
- McKusick Kaufman syndrome
- Mesomelic dysplasia of upper limb
- Microcephaly, seizure, intellectual disability, heart disease syndrome
- Multiple congenital cardiac defects
- Neck webbing
- Neurodevelopmental disorder, craniofacial dysmorphism, cardiac defect, skeletal anomalies syndrome
- Pancreatic hypoplasia, diabetes mellitus, congenital heart disease syndrome
- Pentose disorder
- PHAVER syndrome
- Polysyndactyly and cardiac malformation syndrome
- Pulmonary arterial hypertension associated with congenital heart disease
- Pure gonadal dysgenesis
- Pure gonadal dysgenesis 46,XY
- Sagittal craniosynostosis
- Secondary hypertension due to congenital heart disorder
- Short stature with webbed neck and congenital heart disease syndrome
- Short stature, developmental delay, congenital heart defect syndrome
- Situs ambiguus
- Sonoda syndrome
- Thomas syndrome
- TMEM94-associated congenital heart defect, facial dysmorphism, developmental delay syndrome
- TRAF7-associated heart defect, digital anomalies, facial dysmorphism, motor and speech delay syndrome
- VACTERL syndrome with hydrocephalus
- Verloove Vanhorick Brubakk syndrome
- Vertebral abnormalities, anal atresia, cardiac abnormalities, tracheo-esophageal fistula, renal anomalies, limb defects syndrome
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Q24.9: its own notes plus those printed at Q24 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 anomaly of heart
- Congenital disease of heart
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
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.
Notes
General instructions on how these codes are used.
- 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 Q24.9, its category, or a range that includes it.
Use Additional Code 1
These codes say to use an additional code from the note, and Q24.9 is one of the codes named.
- Q87.88 CTNNB1 syndrome
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Atelocardia Q24.9
heart (congenital) Q24.9
imperfect, congenital See Also: Anomaly, by site;
heart Q24.9
Disease, diseased See Also: Syndrome;
congenital Q24.9
cyanotic Q24.9
cardiac See Also: Disease, heart; I51.9
congenital Q24.9
Malformation (congenital) See Also: Anomaly;
heart Q24.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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 Q24.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Q24.9Overview
What is the ICD-10 code for congenital malformation of heart, unspecified?
The ICD-10-CM code for congenital malformation of heart, unspecified is Q24.9 (sometimes written as Q249). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Q24.9 (Other congenital malformations of heart) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report congenital malformation of heart, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Q24.9 group to?
When congenital malformation of heart, unspecified 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 Q24.9 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 congenital malformation of heart, unspecified on inpatient claims. The code appears in the Congenital malformations of the circulatory system (Q20-Q28) range of the CMS exempt list.
Can Q24.9 be reported with I42.4?
Not as a rule. The Excludes1 note at Q24, which applies to Q24.9, lists "endocardial fibroelastosis (I42.4)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).