Congenital enlarged atrial chamber
Congenital aneurysm of subaortic left ventricle
Single inlet ventricle with absent atrioventricular connection
Type II aortic left ventricular tunnel
Left ventricular outflow tract atresia
Hepatic vein to left atrium and right atrium
Right sided atrium connecting to right ventricle
Type I aortic left ventricular tunnel
Cor triatriatum with all pulmonary veins to proximal chamber without communication to left atrium with extracardiac pulmonary venous chamber communication
Univentricular atrioventricular connection with absent left sided atrioventricular connection
Left pulmonary artery with absent proximal arterial connection
Right ventricle inferior to left ventricle
Right ventricular outflow tract obstruction due to atrioventricular valve
Tricuspid atresia
Supravalvar mitral ring
Right ventricle anterior to left ventricle
Dilatation of cardiac ventricle
Thoracodidymus
Right ventricular outflow tract obstruction due to abnormal cardiac muscle bands
Left ventricular outflow tract abnormality
Tricuspid atresia with absent right atrioventricular connection
Dilatation of left auricular appendage
Divided left atrium with all pulmonary veins to proximal chamber without communication to left atrium
Ebstein anomaly of tricuspid valve with atrialisation of right ventricular chamber
Left atrial appendage - right - juxtaposition
Left ventricular outflow tract obstruction due to prolapsed arterial valve
Right hand pattern ventricular topology
Left ventricular outflow tract obstruction
Hepatic vein to left atrium
Hypoplasia of left ventricular outflow tract
Congenital atresia of tricuspid valve
Right ventricular outflow tract obstruction due to septal hypertrophy
Congenital right ventricular anomaly
TGA - Transposition of great arteries
Ebstein's malformation of tricuspid valve
Right sided atrium connecting to ventricle of indeterminate morphology
Parallel course of aorta and pulmonary artery
Thoracopagus with conjoined atria and ventricles
Tricuspid atresia with absent valvar annulus
Supravalvar left atrial ring
Cor biloculare
Superior to inferior ventricular relationship
Atrioventricular septal defect with ventricular imbalance
Left ventricular outflow tract obstruction due to atrioventricular valve
Cor triatriatum with restrictive outlet of proximal chamber to left atrium
Right ventricular outflow tract atresia
Aorta to left ventricle tunnel
Left sided atrium connecting to right ventricle
Rudimentary left ventricle
Ventricular imbalance with dominant right ventricle and hypoplastic left ventricle
Congenital right ventricular aneurysm
Obstruction of right ventricular outflow tract due to aortico-left ventricular tunnel
Aortico-left ventricular tunnel with extracardiac aneurysm of aortic wall
Congenital absence of atrial septum
Congenital left ventricular aneurysm
Right sided atrium connecting to both ventricles
Right ventricular outflow tract obstruction due to common atrioventricular valve
Cor triloculare
Congenital abnormality of posterior cardiac vein of left ventricle
Single ventricular outlet above right ventricle
Transposition of great arteries
Atrioventricular septal defect with ventricular component under superior bridging leaflet with chords at crest ventricular septum
Congenital dilatation of aorta
LVOTO - Left ventricular outflow tract obstruction
Ebstein anomaly of tricuspid valve with atrialization of right ventricular chamber
Congenital aneurysm of heart
RVOTO - Right ventricular outflow tract obstruction
Dilatation of right atrial appendage
Giant right atrium
LVOT - Left ventricular outflow tract abnormality
Abnormal infundibular morphology
Ebstein's anomaly of tricuspid valve with atrialisation of right ventricular chamber
Right ventricular outflow tract obstruction due to septoparietal trabeculation
Uniatrial biventricular connection with absent left sided atrioventricular connection with straddling valve
Ebstein's anomaly of tricuspid valve with atrialization of right ventricular chamber
Abnormal relationship of right ventricle to left ventricle
Absent right sided atrioventricular connection
Functionally univentricular heart
Congenital dilatation of cardiac ventricle
Atrioventricular septal defect with ventricular component under inferior bridging leaflet with chords to crest ventricular septum
Cor triatriatum with all pulmonary veins to proximal chamber without communication to left atrium
MA - Mitral atresia
Right atrial appendage absent
LV wall aneurysmal
Thoracopagus with conjoined atriums
Ectasia of right auricular appendage
Single outlet ventriculoarterial connection
Congenital aneurysm of aorta
Abnormal connection of hepatic vein to atrium
Abnormal atrial arrangement
Left ventricular outflow tract obstruction due to prolapse of Eustachian valve
Right ventricular aneurysm
Right ventricular outflow obstruction - localized
Right ventricular outflow tract obstruction
Absence of atrial AND ventricular septa
Thoracopagus with conjoined atria
Right ventricular outflow tract obstruction due to fibromuscular shelf
Supramitral left atrial ring
Tripartite right ventricle
Thoracopagus with conjoined atriums and ventricles
Congenital abnormality of tricuspid leaflet
Atrioventricular septal defect - Rastelli C
Congenital dilatation of atrium
DOIV - Double outlet indeterminate ventricle
Right ventricle to left of left ventricle
Aortico-left ventricular tunnel of simple type
Aortic tunnel
Congenital left ventricular submitral valve aneurysm
Diffuse hypoplasia of left ventricle
Congenital left ventricular anomaly
Left sided atrium connecting to both ventricles
Abnormality of left atrial appendage
Abnormal relationship of aortic orifice to pulmonary orifice
Ebstein's anomaly
Aortic left ventricular tunnel
Congenital small ventricular chamber
Congenital abnormality of mitral subvalvular apparatus
Absent right sided atrioventricular connection with straddling valve - uniatrial biventricular connection
Hepatic vein to right atrium
Cor binoculare
Atrioventricular septal defect - ventricular component under inferior bridging leaflet
Congenital right ventricular diverticulum
Right ventricular outflow tract obstruction due to aneurysm of membranous septum
Congenital atresia of mitral valve
Right ventricular outflow obstruction - localised
Right ventricular outflow tract abnormality
Right ventricular outflow tract obstruction due to malaligned outlet septum
Dilatation of left atrial appendage
Mitral atresia
Abnormality of right atrial appendage
Common atrium
Thorax-joined twins
Hepatic vein to right sided atrium
Type IV aortic left ventricular tunnel
Double outlet from ventricle of indeterminate morphology
Atrioventricular septal defect with dominant left ventricle
Divided left atrium with all pulmonary veins to proximal chamber without communication to left atrium with extracardiac pulmonary venous chamber communication
Left ventricular aneurysm
Two chambered right ventricle
Aortico-left ventricular tunnel with aneurysm of intracardiac septal wall and aneurysm of extracardiac aortic wall
Divided left atrium with restrictive outlet of proximal chamber to left atrium
Hypoplasia of left ventricular inflow tract
Concordant ventriculoarterial connections
Atrioventricular septal defect - ventricular component under superior bridging leaflet
Congenital enlarged ventricular chamber
Left sided atrium connecting to ventricle of indeterminate morphology
Abnormally small cardiac chamber
LVA - Congenital left ventricular aneurysm
Congenital anomaly of left ventricle
Left ventricular hypoplasia
Pulmonary artery with absent proximal arterial connection
Ectasia of right atrial appendage
Aneurysm of right ventricle
Atresia of mitral valve with absent atrioventricular connection
Transposition of great vessels
Atrioventricular septal defect with ventricular imbalance consisting of dominant left ventricle and hypoplastic right ventricle
Ectasia of left atrial appendage
Left sided atrium connecting to left ventricle
Thoracopagus
Atrial situs ambiguus
TGV - Transposition of great vessels
Right ventricular diverticulum
Absent left sided atrioventricular connection
Congenital hypoplasia of cardiac ventricle
Atrioventricular septal defect with ventricular component under superior bridging leaflet without chordal attachment to ventricular septal crest
Absent atrioventricular connection - single inlet ventricle
Left ventricular wall aneurysmal
Congenital abnormality of cardiac ventricle
Subaortic stenosis due to restrictive ventricular septal defect in functionally univentricular heart
Ventricular imbalance
Right ventricular outflow tract absent
Right ventricle superior to left ventricle
Double-chambered right ventricle
LVA - Left ventricular aneurysm
Ebstein's anomaly of tricuspid valve
Uniatrial biventricular connection with absent right sided atrioventricular connection with straddling valve
Discordant ventriculoarterial connection
Indeterminate ventricular outflow tract obstruction
Cardiac ventricular dilatation
Right ventricular outflow tract obstruction due to prolapsed arterial valve
Solitary ventricle of indeterminate morphology
Absent left sided atrioventricular connection - univentricular
Ectasia of left auricular appendage
Left ventricular outflow tract obstruction due to subpulmonary fibromuscular shelf
Left ventricular outflow tract obstruction due to aneurysm of membranous septum
Bipartite right ventricle
Ebstein anomaly of tricuspid valve
Unipartite right ventricle
Atrioventricular septal defect - Rastelli A
Dilatation of right auricular appendage
Atrioventricular septal defect with ventricular component under free floating superior bridging leaflet and chords to papillary muscle at right ventricular free wall
Isolated right ventricular hypoplasia
Right ventricle posterior to left ventricle
Mitral atresia with absent atrioventricular connection
Congenital abnormality of hepatic vein
Synthorax
LVOT - Hypoplasia of left ventricular outflow tract
Common atrioventricular valve in functionally univentricular heart
Indeterminate atrial arrangement
Left atrial appendage absent
RVOT - Right ventricular outflow tract abnormality
Cor triloculare biventriculare
Absent right sided atrioventricular connection - univentricular
Bilateral isomeric atria
Type III aortic left ventricular tunnel
Ebsteins anomaly
Left ventricular outflow tract obstruction due to anterolateral muscle band
Absent atrioventricular connection with straddling valve
Dynamic right ventricular outflow tract obstruction
Absent left sided atrioventricular connection with straddling valve - uniatrial biventricular connection
Right ventricular outflow tract obstruction due to prolapse of Eustachian valve
Hepatic vein to left sided atrium
Aortico-left ventricular tunnel with intracardiac aneurysm of septal portion
Univentricular atrioventricular connection with absent right sided atrioventricular connection
Left hand pattern ventricular topology
Transposition of great arteries with concordant atrioventricular connections and ventricular septal defect and left ventricular outflow tract obstruction
Hypoplasia of trabecular portion of right ventricle
Concordant ventriculoarterial connection with parallel great arteries
Concordant atrioventricular connections

Frequently Asked Questions

What is the ICD-10 code for oth congenital malform of cardiac chambers and connections?

The ICD-10-CM code for oth congenital malform of cardiac chambers and connections is Q20.8. The full clinical description is "Other congenital malformations of cardiac chambers and connections". Q20.8 is a billable/specific code that can be used on insurance claims and medical billing.

What does ICD-10 code Q20.8 mean?

ICD-10-CM code Q20.8 represents “Other congenital malformations of cardiac chambers and connections”. It is classified under Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities and is a billable/specific code that can be used on a claim.

Is Q20.8 a billable code?

Yes, Q20.8 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.

What chapter is Q20.8 in?

Q20.8 is in Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (codes Q00-Q99).

What codes cannot be used with Q20.8?

Q20.8 has Excludes1 notes indicating codes that cannot be used together with it, including: dextrocardia with situs inversus (Q89.3); mirror-image atrial arrangement with situs inversus (Q89.3).

What SNOMED CT codes does Q20.8 map to?

Q20.8 maps to 148 SNOMED CT concepts: 445898001, 253333008, 253529002, 253270001, 253268005, and 143 more. SNOMED CT is a clinical terminology used in electronic health records.

What are the UMLS CUIs for Q20.8?

Q20.8 is linked to 2 UMLS Concept Unique Identifiers: C2910125, C0477994. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

How does Q20.8 relate to ICF functioning codes?

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like oth congenital malform of cardiac chambers and connections affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

What is the ICD-11 equivalent of Q20.8?

Q20.8 maps to the ICD-11 code: LA8Z (Structural developmental anomaly of heart or great vessels, unspecified).

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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.