Congenital malformations of uterus and cervix (Q51) ICD-10-CM
The Q51 code range covers congenital malformations of uterus and cervix with 24 ICD-10-CM diagnosis codes. 18 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the Q51 Range 24 codes · 18 billable
- Q51 Congenital malformations of uterus and cervixNon-billable
- Q51.0 Agenesis and aplasia of uterus
- Q51.1 Doubling of uterus with doubling of cervix and vaginaNon-billable
- Q51.10 Doubling of uterus with doubling of cervix and vagina without obstruction
- Q51.11 Doubling of uterus with doubling of cervix and vagina with obstruction
- Q51.2 Other doubling of uterusNon-billable
- Q51.21 Complete doubling of uterus
- Q51.22 Partial doubling of uterus
- Q51.28 Other and unspecified doubling of uterus
- Q51.3 Bicornate uterus
- Q51.4 Unicornate uterus
- Q51.5 Agenesis and aplasia of cervix
- Q51.6 Embryonic cyst of cervix
- Q51.7 Congenital fistulae between uterus and digestive and urinary tracts
- Q51.8 Other congenital malformations of uterus and cervixNon-billable
- Q51.81 Other congenital malformations of uterusNon-billable
- Q51.810 Arcuate uterus
- Q51.811 Hypoplasia of uterus
- Q51.818 Other congenital malformations of uterus
- Q51.82 Other congenital malformations of cervixNon-billable
- Q51.820 Cervical duplication
- Q51.821 Hypoplasia of cervix
- Q51.828 Other congenital malformations of cervix
- Q51.9 Congenital malformation of uterus and cervix, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the Q51 range.
Unicornuate Uterus
A congenital abnormality where the uterus develops with only one Fallopian tube.
About the Q51 Code Range
These conditions are differences in the uterus or cervix present at birth. The subdivisions distinguish differences in development, doubling, shape, and connections to other organs.
Q51.0 and Q51.5 separate agenesis and aplasia by whether they affect the uterus or cervix. Q51.10 and Q51.11 distinguish doubling of the uterus, cervix, and vagina without or with obstruction. Other doubling of the uterus separates complete from partial doubling. Further subdivisions name specific uterus shapes, a cyst of the cervix, and connections between the uterus and the digestive or urinary tract. Other malformations separate uterus from cervix; Q51.9 leaves the malformation unspecified.
Questions About This Page
How many billable codes are in the Q51 range?
Of the 24 codes in this range, 18 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the Q51 range classify?
The range classifies congenital malformations of uterus and cervix. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
