Q51: Congenital malformations of uterus and cervix
Codes under Q51 (Congenital malformations of uterus and cervix). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| Q51.0 | Agenesis and aplasia of uterus | ✓ |
| Q51.0 | Agenesis and aplasia of uterus | ✓ |
| Q51.1 | Doubling of uterus with doubling of cervix and vagina | — |
| Q51.1 | Doubling of uterus with doubling of cervix and vagina | — |
| Q51.2 | Other doubling of uterus | — |
| Q51.2 | Other doubling of uterus | — |
| Q51.3 | Bicornate uterus | ✓ |
| Q51.3 | Bicornate uterus | ✓ |
| Q51.4 | Unicornate uterus | ✓ |
| Q51.4 | Unicornate uterus | ✓ |
| Q51.5 | Agenesis and aplasia of cervix | ✓ |
| Q51.5 | Agenesis and aplasia of cervix | ✓ |
| Q51.6 | Embryonic cyst of cervix | ✓ |
| Q51.6 | Embryonic cyst of cervix | ✓ |
| Q51.7 | Congenital fistulae between uterus and digestive and urinary tracts | ✓ |
| Q51.7 | Congenital fistulae between uterus and digestive and urinary tracts | ✓ |
| Q51.8 | Other congenital malformations of uterus and cervix | — |
| Q51.8 | Other congenital malformations of uterus and cervix | — |
| Q51.9 | Congenital malformation of uterus and cervix, unspecified | ✓ |
| Q51.9 | Congenital malformation of uterus and cervix, unspecified | ✓ |
| Q51.10 | Doubling of uterus with doubling of cervix and vagina without obstruction | ✓ |
| 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 | ✓ |
| Q51.11 | Doubling of uterus with doubling of cervix and vagina with obstruction | ✓ |
| Q51.21 | Complete doubling of uterus | ✓ |
| Q51.21 | Complete doubling of uterus | ✓ |
| Q51.22 | Partial doubling of uterus | ✓ |
| Q51.22 | Partial doubling of uterus | ✓ |
| Q51.28 | Other and unspecified doubling of uterus | ✓ |
| Q51.28 | Other and unspecified doubling of uterus | ✓ |
| Q51.81 | Other congenital malformations of uterus | — |
| Q51.81 | Other congenital malformations of uterus | — |
| Q51.82 | Other congenital malformations of cervix | — |
| Q51.82 | Other congenital malformations of cervix | — |
| Q51.810 | Arcuate uterus | ✓ |
| Q51.810 | Arcuate uterus | ✓ |
| Q51.811 | Hypoplasia of uterus | ✓ |
| Q51.811 | Hypoplasia of uterus | ✓ |
| Q51.818 | Other congenital malformations of uterus | ✓ |
| Q51.818 | Other congenital malformations of uterus | ✓ |
| Q51.820 | Cervical duplication | ✓ |
| Q51.820 | Cervical duplication | ✓ |
| Q51.821 | Hypoplasia of cervix | ✓ |
| Q51.821 | Hypoplasia of cervix | ✓ |
| Q51.828 | Other congenital malformations of cervix | ✓ |
| Q51.828 | Other congenital malformations of cervix | ✓ |
Frequently asked questions
What is ICD-10-CM code Q51?
Q51 is an ICD-10-CM category covering Congenital malformations of uterus and cervix. It contains 46 more specific diagnosis codes, 36 of which are billable.
Is Q51 a billable code?
No — Q51 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example Q51.0 — Agenesis and aplasia of uterus). 36 of the 46 codes under Q51 are billable.
What codes fall under Q51?
Q51 includes Q51.0, Q51.0, Q51.1, Q51.1, Q51.2, plus 41 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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