raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:101932

Anomaly of the mitral subvalvular apparatus

Type
Morphological anomaly
Group
Disorder
Status
active

A group of rare congenital mitral malformations characterized by anomalies of the chordae tendineae and papillary muscles. This comprises anomalous mitral arcade or hammock valve (due to thickened and extremely short chordae tendineae), straddling valve (abnormal attachment of the chordae tendineae to both ventricles), and parachute valve (unifocal attachment of the chordae tendineae to a single or fused papillary muscle), resulting in an incompetent valve with regurgitation and/or stenosis and impaired left ventricular inflow, potentially leading to heart failure. In most cases, other cardiac anomalies are found in association.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enAnomaly of the mitral subvalvular apparatus
frAnomalie de l'appareil mitral subvalvulaire
deAnomalie des subvalvulären Apparates der Mitralklappe
esAnomalía del aparato subvalvular mitral
itAnomalia dell'apparato sottovalvolare mitralico
nlAnomalie van subvalvulair apparaat van mitralisklep
ptAnomalia do aparelho mitral subvalvular
plAnomalia mitralnego aparatu podzastawkowego
csAnomálie mitrálního subvalvulárního aparátu
ukАномалія мітрального підклапанного апарату
zh二尖瓣下瓣膜异常
trMitral subvalvüler aparat anomalisi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10Q23.8NTBTattributedvalidated
ICD-11LA87.13Especificvalidated
MONDO0015109Evalidated
UMLSC3164517Evalidated
GARD19784Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

0 records

No prevalence record in this release.

6

HPO phenotypes

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card