Q50.39 Other congenital malformation of ovary

The ICD-10-CM code for Other congenital malformation of ovary is Q50.39 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

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

Section

Q50-Q56: Congenital malformations of genital organs (Q50-Q56)

Category Q50

13 codes (10 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Q50.39:

• Deformity › ovary (congenital)
• Hypoplasia, hypoplastic › ovary, congenital
• Malformation (congenital) › ovary
• Anomaly, anomalous (congenital) (unspecified type) › ovary
• Small (ness) › ovary (congenital)
• Displacement, displaced › ovary (acquired) › free in peritoneal cavity (congenital)
• Adhesions, adhesive (postinfective) › ovary › congenital (to cecum, kidney or omentum)
• Displacement, displaced › ovary (acquired) › congenital

Inclusion Terms

• Congenital malformation of ovary NOS

U.S. Hospital Utilization

• An estimated 75 U.S. inpatient stays in 2022 included Q50.39 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

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
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)