Q21.20
BillableAtrioventricular septal defect, unsp as to part or complete
Atrioventricular septal defect, unspecified as to partial or complete
Status
Billable / Specific
Parent Code
Q21.2Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Atrioventricular canal, NOS
- Endocardial cushion defect NOS
- Ostium primum atrial septal defect (type I) NOS
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- acquired cardiac septal defect (I51.0)
Excludes 2
Conditions not included here, but the patient may have both
- inborn errors of metabolism (E70-E88)
Also Known As / Clinical Terms
SNOMED CT
- Endocardial cushion defect15459006
- Atrial septum primum defect17718000
- Ostium primum defect17718000
- Persistent ostium primum17718000
- Spontaneous closure of ventricular septal defect123714004
- Ventricular septal defect, spontaneous closure123714004
- Common atrioventricular-type ventricular septal defect204330009
- Common atrium253276007
- Congenital absence of atrial septum253276007
- Cor triloculare biventriculare253276007
- 1 ASD - Primum atrial septal defect253373002
- ASD I - Primum atrial septal defect253373002
- ASD1 - Primum atrial septal defect253373002
- Atrioventricular septal defect - isolated atrial component253373002
- Partial atrioventricular septal defect253373002
- Primum atrial septal defect253373002
- Congenital abnormality of atrioventricular valves in atrioventricular septal defect253374008
- Atrioventricular septal defect - isolated ventricular component253415001
- Partial atrioventricular septal defect with isolated ventricular component253415001
- Atrioventricular septal defect: atrial and ventricular components253416000
- Complete atrioventricular septal defect253416000
- Atrioventricular septal defect - ventricular component253417009
- Atrioventricular septal defect - ventricular component under superior bridging leaflet253418004
- Atrioventricular septal defect - Rastelli A253419007
- Atrioventricular septal defect with ventricular component under superior bridging leaflet with chords at crest ventricular septum253419007
- Atrioventricular septal defect - Rastelli B253420001
- Atrioventricular septal defect with ventricular component under superior bridging leaflet with chords to papillary muscle on right ventricular side septum253420001
- Atrioventricular septal defect - Rastelli C253421002
- Atrioventricular septal defect with ventricular component under free floating superior bridging leaflet and chords to papillary muscle at right ventricular free wall253421002
- Atrioventricular septal defect - ventricular component under inferior bridging leaflet253422009
- Atrioventricular canal type ventricular septal defect360481003
- Common atrioventricular canal360481003
- Endocardial cushion defect, complete type360481003
- Atrioventricular septal defect with separate atrioventricular orifices445002005
- Atrioventricular septal defect with dominant left ventricle445264002
- Atrioventricular septal defect with ventricular imbalance consisting of dominant left ventricle and hypoplastic right ventricle445264002
- Atrioventricular septal defect with dominant right ventricle445299003
- Atrioventricular septal defect with ventricular imbalance consisting of dominant right ventricle and hypoplastic left ventricle445299003
- Atrioventricular septal defect with additional muscular ventricular septal defect445334007
- Ventricular imbalance447285001
- Spontaneous closure of ventricular component of atrioventricular septal defect447777009
- Atrioventricular septal defect associated with tetralogy of Fallot448007000
- Atrioventricular septal defect with atrial and ventricular components and separate atrioventricular valves448118003
- Atrioventricular septal defect with atrioventricular valve regurgitation448119006
- Atrioventricular septal defect with ventricular component and interchordal shunting under inferior bridging leaflet448182006
- Atrioventricular septal defect with ventricular component and interchordal shunting under superior bridging leaflet448183001
- Atrioventricular septal defect with ventricular component and shunting under connecting tongue with separate orifices448184007
- Spontaneous closure of ventricular septal defect due to accessory tissue of atrioventricular valve448201009
- Atrioventricular septal defect with restrictive ventricular component448331000
- Gelatinous atrioventricular valve leaflet in atrioventricular septal defect448626007
- Noncoapting atrioventricular valve leaflet in atrioventricular septal defect448777006
- Spontaneous closure of atrial component of atrioventricular septal defect448814004
- Deficiency of atrioventricular valve leaflet in atrioventricular septal defect448822006
- Thickened atrioventricular valve leaflet in atrioventricular septal defect448836001
- Atrioventricular septal defect with ventricular component under superior bridging leaflet without chordal attachment to ventricular septal crest448919005
- Flail atrioventricular valve leaflet in atrioventricular septal defect449008001
- Fenestration of atrioventricular valve leaflet in atrioventricular septal defect449011000
- Mass associated with atrioventricular valve leaflet in atrioventricular septal defect449189009
- Residual interatrial communication449351005
- Atrioventricular septal defect with ventricular component under inferior bridging leaflet with chords to crest ventricular septum449379004
- Congenital abnormality of atrioventricular valve leaflet in atrioventricular septal defect449382009
- Congenital abnormality of atrioventricular valve papillary muscle in atrioventricular septal defect449383004
- Abnormality of atrioventricular valve leaflet in atrioventricular septal defect449388008
- Atrioventricular septal defect with atrioventricular valve regurgitation through left septal commissure449456004
- Atrioventricular septal defect with atrioventricular valve regurgitation through left superior bridging leaflet lateral mural commissure449457008
- Atrioventricular septal defect with atrioventricular valve regurgitation through left inferior bridging leaflet lateral mural commissure449459006
- Atrioventricular septal defect with atrioventricular valve regurgitation through right septal commissure449490008
- Atrioventricular septal defect with atrioventricular valve regurgitation through right anterosuperior inferior mural commissure449537006
- Atrioventricular septal defect with atrioventricular valve regurgitation through right anterosuperior superior bridging leaflet commissure449538001
- Atrioventricular septal defect with atrioventricular valve regurgitation through right inferior bridging leaflet inferior mural commissure449539009
- Atrioventricular septal defect, blepharophimosis, radial and anal defect syndrome763066009
- Houlston Ironton Temple syndrome763066009
- Atrioventricular septal defect with ventricular imbalance871630004
- Atrioventricular septal defect with balanced ventricles871643004
- Congenital AVSD (atrioventricular septal defect)1237074000
- Congenital atrioventricular septal defect1237074000
UMLS
- Atrioventricular canalC0014116
- Cushion Defect, EndocardialC0014116
- Cushion Defects, EndocardialC0014116
- Defect, Endocardial CushionC0014116
- Defects, Endocardial CushionC0014116
- ECDC0014116
- ENDOCARDIAL CUSHION DEFECTC0014116
- Endocardial Cushion DefectC0014116
- Endocardial Cushion DefectsC0014116
- Endocardial cushion defectC0014116
- Endocardial cushion defect (disorder)C0014116
- Endocardial cushion defect NOSC0014116
- Endocardial cushion defect, unspecified typeC0014116
- Endocardial cushion defectsC0014116
- atrioventricular canalC0014116
- canal atrioventricularC0014116
- endocardial cushion defectC0014116
- endocardial cushion defectsC0014116
- Atrioventricular canal type ventricular septal defectC0221215
- Atrioventricular canal, NOSC0221215
- Common atrioventricular canalC0221215
- Common atrioventricular canal (disorder)C0221215
- Common atrioventricular valveC0221215
- Complete atrioventricular canalC0221215
- Complete atrioventricular canal defectC0221215
- Complete atrioventricular septal defectC0221215
- Complete common AV canalC0221215
- Endocardial cushion defect, complete typeC0221215
- Persistent Atrioventricular CanalC0221215
- Atrioventricular septal defect, unsp as to part or completeC5675464
- Atrioventricular septal defect, unspecified as to partial or completeC5675464
- Ostium primum atrial septal defect (type I)C2910128
- Ostium primum atrial septal defect (type I) NOSC2910128
Frequently Asked Questions
What is the ICD-10 code for atrioventricular septal defect, unsp as to part or complete?
The ICD-10-CM code for atrioventricular septal defect, unsp as to part or complete is Q21.20. The full clinical description is "Atrioventricular septal defect, unspecified as to partial or complete". Q21.20 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code Q21.20 mean?
ICD-10-CM code Q21.20 represents "Atrioventricular septal defect, unspecified as to partial or complete". 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 Q21.20 a billable code?
Yes, Q21.20 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is Q21.20 in?
Q21.20 is in Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (codes Q00-Q99).
What codes cannot be used with Q21.20?
Q21.20 has Excludes1 notes indicating codes that cannot be used together with it, including: acquired cardiac septal defect (I51.0).
What SNOMED CT codes does Q21.20 map to?
Q21.20 maps to 55 SNOMED CT concepts: 253373002, 449388008, 17718000, 360481003, 253419007, and 50 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for Q21.20?
Q21.20 is linked to 4 UMLS Concept Unique Identifiers: C0014116, C0221215, C5675464, C2910128. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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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.