Q23.82 Congenital mitral valve cleft leaflet

The ICD-10-CM code for Congenital mitral valve cleft leaflet is Q23.82 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

17: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

Section

Q20-Q28: Congenital malformations of the circulatory system (Q20-Q28)

Category Q23

11 codes (9 billable)

FY2026 Status

Introduced in FY2025

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Q23.82:

• Cleft (congenital) › mitral valve leaflet (at birth) (congenital)
• Anomaly, anomalous (congenital) (unspecified type) › mitral (leaflets) (valve) › cleft

Inclusion Terms

• Cleft mitral valve leaflet at birth

Official Coding Guidelines

POA indicator for congenital conditions/anomalies and Q00-Q99 exception

Congenital conditions and anomalies Assign “Y” for congenital conditions and anomalies except for categories Q00- Q99, Congenital anomalies, which are on the exempt list. Congenital conditions are always considered present on admission.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool