Q20.8 is the authoritative medical code for Other congenital malformations of cardiac chambers and connections. This classification is used in medical billing and clinical recording to specify the clinical criteria for other congenital malformations of cardiac chambers and connections (ICD-10-CM Q20.8), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Other congenital malformations of cardiac chambers and connections is a billable ICD-10-CM diagnosis code Q20.8. Inclusion terms: Cor binoculare. Excludes1 (not coded here): dextrocardia with situs inversus Q89.3; mirror-image atrial arrangement with situs inversus Q89.3.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for Q20.8 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- dextrocardia with situs inversus Q89.3
- mirror-image atrial arrangement with situs inversus Q89.3
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with Q20.8?
Per Excludes1 instructions, Q20.8 must not be reported with: dextrocardia with situs inversus (Q89.3); mirror-image atrial arrangement with situs inversus (Q89.3).
What conditions are included under Q20.8?
Other congenital malformations of cardiac chambers and connections includes: Cor binoculare.
Codes in This Family (9)
Official ICD-10-CM classifications in the same code family as Q20.8, with their registry titles.
- Q20 — Congenital malformations of cardiac chambers and connections
- Q20.0 — Common arterial trunk
- Q20.1 — Double outlet right ventricle
- Q20.2 — Double outlet left ventricle
- Q20.3 — Discordant ventriculoarterial connection
- Q20.4 — Double inlet ventricle
- Q20.5 — Discordant atrioventricular connection
- Q20.6 — Isomerism of atrial appendages
- Q20.9 — Congenital malformation of cardiac chambers and connections, unspecified
Indexed Clinical Terms (11)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Anomaly, anomalous (congenital) (unspecified type), atrial, bands or folds
- Anomaly, anomalous (congenital) (unspecified type), auricle, heart
- Anomaly, anomalous (congenital) (unspecified type), band, atrial
- Anomaly, anomalous (congenital) (unspecified type), cardiac, chambers, specified NEC
- Anomaly, anomalous (congenital) (unspecified type), heart, auricle
- Anomaly, anomalous (congenital) (unspecified type), heart, ventricle
- Cor, biloculare
- Cor, triloculare
- Double, auricle (heart)
- Malformation (congenital), cardiac, chambers, specified type NEC
- Unilocular heart
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code Q18.8
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ICD Code Q23.8
Other congenital malformations of aortic and mitral valves