What does ICD-10 code Q51 mean?

ICD-10 code Q51 is the standardized code used for congenital malformations of uterus and cervix in medical records and coding systems.

When is ICD-10 code Q51 used?

Doctors, hospitals, and insurers may use ICD-10 code Q51 when recording congenital malformations of uterus and cervix in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code Q51 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code Q51: Congenital malformations of uterus and cervix

Name: ICD-10 Code Q51: Congenital malformations of uterus and cervix
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:29:44.657Z

Q51 is an ICD-10 diagnosis entry used to group records related to Congenital malformations of uterus and cervix. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0).

When is it used?

May be used when a clinician documents congenital malformations of uterus and cervix in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

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

block

Q50-Q56Congenital malformations of genital organs

currentQ50-Q56

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Sibling codes

Q50Congenital malformations of ovaries, fallopian tubes and broad ligaments Q52Other congenital malformations of female genitalia Q53Undescended and ectopic testicle Q54Hypospadias Q55Other congenital malformations of male genital organs Q56Indeterminate sex and pseudohermaphroditism

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

Q51

Replacement codes

Q51.0 — Agenesis and aplasia of uterusQ51.3 — Bicornate uterusQ51.4 — Unicornate uterusQ51.5 — Agenesis and aplasia of cervixQ51.6 — Embryonic cyst of cervixQ51.7 — Congenital fistulae between uterus and digestive and urinary tractsQ51.9 — Congenital malformation of uterus and cervix, unspecified

Common synonyms

Congenital malformations of uterus and cervix

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.