2027 ICD-10-CM Diagnosis Code Q51Congenital malformations of uterus and cervix

ICD-10-CM Codes›Q00-Q99›Q50-Q56›Q51

ICD-10-CM Q51
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Q51 is a non-billable ICD-10-CM category code for congenital malformations of uterus and cervix, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Q51.0, Q51.10, Q51.11, and Q51.21.

Code Identity

ICD-10-CM Code
Q51
Billable Status
No — Non-Billable Category
Code Describes
Congenital malformations of uterus and cervix
Short Description
Congenital malformations of uterus and cervix
Same as the full description in the CMS dataset.
Chapter
Q50-Q56
Congenital malformations of genital organs

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ50-Q56Congenital malformations of genital organs
CategoryQ51Congenital malformations of uterus and cervix
This CodeQ51Congenital malformations of uterus and cervix

Specific Coding for Congenital malformations of uterus and cervixOverview

Non-specific codes like Q51 require more characters. Use one of these billable codes instead:

  • Use Q51.0 for Agenesis and aplasia of uterus

  • Q51.1 for Doubling of uterus with doubling of cervix and vagina

  • Use Q51.10 for Doubling of uterus with doubling of cervix and vagina without obstruction

  • Use Q51.11 for Doubling of uterus with doubling of cervix and vagina with obstruction

  • Q51.2 for Other doubling of uterus

  • Use Q51.21 for Complete doubling of uterus

  • Use Q51.22 for Partial doubling of uterus

  • Use Q51.28 for Other and unspecified doubling of uterus

  • Use Q51.3 for Bicornate uterus

  • Use Q51.4 for Unicornate uterus

  • Use Q51.5 for Agenesis and aplasia of cervix

  • Use Q51.6 for Embryonic cyst of cervix

  • Use Q51.7 for Congenital fistulae between uterus and digestive and urinary tracts

  • Q51.8 for Other congenital malformations of uterus and cervix

  • Q51.81 for Other congenital malformations of uterus

  • Q51.82 for Other congenital malformations of cervix

  • Use Q51.9 for Congenital malformation of uterus and cervix, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Q51: its own notes plus those printed at block Q50-Q56 and Chapter 17. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block Q50-Q56 Congenital malformations of genital organs applies to 91 codes
  • androgen insensitivity syndrome (E34.5-)
  • syndromes associated with anomalies in the number and form of chromosomes (Q90-Q99)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • inborn errors of metabolism (E70-E88)

Notes

General instructions on how these codes are used.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • Codes from this chapter are not for use on maternal records

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Patient EducationClinical

Birth Defects

A birth defect is a problem that happens while a baby is developing in the mother's body. Most birth defects happen during the first 3 months of pregnancy. One out of every 33 babies in the United States is born with a birth defect.

The full article covers:

  • What are birth defects?
  • What causes birth defects?
  • Who is at risk of having a baby with birth defects?
  • How are birth defects diagnosed?
  • What are the treatments for birth defects?
  • Can birth defects be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Q51Overview

What is the ICD-10 code for congenital malformations of uterus and cervix?

Q51 is the ICD-10-CM category for congenital malformations of uterus and cervix, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is Q51 (Congenital malformations of uterus and cervix) a billable code?

No. This is a category header that groups the codes for congenital malformations of uterus and cervix, and headers cannot be submitted on claims. Claims for congenital malformations of uterus and cervix need a more specific code from this category, such as Q51.0, Q51.10, and Q51.11.

Can Q51 be reported with a code from E34.5?

Not as a rule. The Excludes1 note at block Q50-Q56, which applies to Q51, lists "androgen insensitivity syndrome (E34.5-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).