ICD-10-CM › Q00-QA1 › Q20-Q28 › Q20 Congenital malformations of... › Q20.8
Other congenital malformations of cardiac chambers and connections
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Other congenital malformations of cardiac chambers and connections
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from Q20 Congenital malformations of cardiac chambers and connections
Excludes1 - never coded here
- dextrocardia with situs inversus (Q89.3)
- mirror-image atrial arrangement with situs inversus (Q89.3)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Cleft
- Extra
- Fused
- Patent
- Trifid
- Triple
- Window
- Aplasia
- Aberrant
- Patulous
- Abnormity
- Asymmetry
- Dysplasia
- Additional
- Lobulation
- Nonclosure
- Nondescent
- Fold, folds
- Rudimentary
- Undescended
- Malformation
- Triplication
- Transposition
- Birth > defect
- Maldevelopment
- Septum, septate
- Union, abnormal
- Imperfect > fusion
- Vestige, vestigial
- Duplication, duplex
- Lesion > congenital
- Pervious, congenital
- Elongated, elongation
- Open, opening > false
- Termination > anomalous
- Heterotopia, heterotopic
- Implantation > anomalous
- Segmentation, incomplete
- Subluxation > congenital
- Congenital > malformation
Showing 40 of 107 index phrases.
Codes in the same group
| Code | Description | Status |
|---|---|---|
| Q20.0 | Common arterial trunk | Valid |
| Q20.1 | Double outlet right ventricle | Valid |
| Q20.2 | Double outlet left ventricle | Valid |
| Q20.3 | Discordant ventriculoarterial connection | Valid |
| Q20.4 | Double inlet ventricle | Valid |
| Q20.5 | Discordant atrioventricular connection | Valid |
| Q20.6 | Isomerism of atrial appendages | Valid |
| Q20.9 | Congenital malformation of cardiac chambers and connections, unspecified | Valid |