Q51 – Congenital malformations of uterus and cervix

ICD-10-CM 2027 diagnosis code · Congenital malformations of genital organs

Non-billable header

ICD-10-CM code Q51

Code: Q51 (claims format: Q51)
Description: Congenital malformations of uterus and cervix
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
Block: Q50-Q56 Congenital malformations of genital organs

Billable codes under Q51

Q51 is a header code and cannot be used on claims. Choose the most specific code:

Q51.0 – Agenesis and aplasia of uterusBillable
Q51.1 – Doubling of uterus with doubling of cervix and vaginaHeader (more codes below)
Q51.2 – Other doubling of uterusHeader (more codes below)
Q51.3 – Bicornate uterusBillable
Q51.4 – Unicornate uterusBillable
Q51.5 – Agenesis and aplasia of cervixBillable
Q51.6 – Embryonic cyst of cervixBillable
Q51.7 – Congenital fistulae between uterus and digestive and urinary tractsBillable
Q51.8 – Other congenital malformations of uterus and cervixHeader (more codes below)
Q51.9 – Congenital malformation of uterus and cervix, unspecifiedBillable

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block Q50-Q56

Excludes1 (not coded here):

androgen insensitivity syndrome (E34.5-)
syndromes associated with anomalies in the number and form of chromosomes (Q90-Q99)

Frequently asked questions

What is ICD-10 code Q51?

Q51 is the ICD-10-CM code for congenital malformations of uterus and cervix, in the block Q50-Q56 (Congenital malformations of genital organs).

Is Q51 a billable code?

No. Q51 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.