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    OpenPayerBilling CodesCongenital malformations of genital organsICD-10-CM q51-congenital-malformations-of-uterus-and-cervix
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    ICD-10-CM Code For Congenital Malformations Of Uterus And Cervix: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group Q51 includes congenital structural anomalies of the uterus and cervix such as uterine agenesis, uterus didelphys, septate uterus, bicornuate uterus, and cervical malformations that may affect reproductive outcomes. These ICD-10-CM diagnosis codes are used to document congenital anatomic variations, the presence or absence of specific uterine or cervical structures, and any associated reproductive or gynecologic complications relevant to this group. Accurate coding within the ICD-10-CM Q51 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM Q51: Congenital Malformations Of Uterus And Cervix Overview

    This group describes congenital structural malformations of the uterus and cervix that arise during fetal development and may impact reproductive function. It targets the female genital system, specifically anatomic variations such as uterine agenesis, uterus didelphys, septate uterus, and cervical anomalies. Accurate coding of these conditions matters for complete clinical documentation and can affect coverage determinations and appropriate reimbursement.

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    When to Use

    Use a code from this group when documenting a diagnosed congenital uterine or cervical malformation confirmed by imaging, surgical findings, or clinical evaluation. Apply codes from this group to capture the specific type of anomaly and any associated reproductive or gynecologic complications relevant to care and billing.

    ICD-10-CM Codes

    18 rows

    ICD-10-CM CodeDescription
    Q51.0Agenesis and aplasia of uterus
    Q51.10Doubling of uterus with doubling of cervix and vagina without obstruction
    Q51.11Doubling of uterus with doubling of cervix and vagina with obstruction
    Q51.21Complete doubling of uterus
    Q51.22Partial doubling of uterus
    Q51.28Other and unspecified doubling of uterus
    Q51.3Bicornate uterus
    Q51.4Unicornate uterus
    Q51.5Agenesis and aplasia of cervix
    Q51.6Embryonic cyst of cervix
    Q51.7Congenital fistulae between uterus and digestive and urinary tracts
    Q51.810Arcuate uterus
    Q51.811Hypoplasia of uterus
    Q51.818Other congenital malformations of uterus
    Q51.820Cervical duplication
    Q51.821Hypoplasia of cervix
    Q51.828Other congenital malformations of cervix
    Q51.9Congenital malformation of uterus and cervix, unspecified

    DRG Codes

    4 rows

    DRG CodeDescription
    742Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC
    743Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC
    760Menstrual and Other Female Reproductive System Disorders with CC/MCC
    761Menstrual and Other Female Reproductive System Disorders without CC/MCC

    Typical Clinical Scenarios

    • An adolescent female presents to pediatric gynecology with primary amenorrhea and cyclic abdominal pain. Physical exam and pelvic ultrasound reveal a transverse vaginal septum with hematocolpos and normal secondary sexual characteristics; evaluation focuses on anatomical obstruction causing retention of menstrual blood. A congenital malformation of the vagina/cervix or uterus is coded to reflect the obstructive anomaly and guide procedural planning. Typical codes: Q51.820, Q51.821
    • A reproductive-age woman with a history of recurrent first-trimester pregnancy loss is evaluated in infertility clinic; hysterosalpingography and pelvic MRI demonstrate a uterine septum causing an abnormal uterine cavity and likely implantation failure. The patient is diagnosed with a structural uterine malformation that may be addressed surgically to improve obstetric outcomes. Typical codes: Q51.0, Q51.3
    • A newborn is noted at routine neonatal exam to have a bicornuate appearing uterus on pelvic ultrasound after evaluation for ambiguous genitalia; pediatric genetics and pediatric gynecology are consulted for further workup and monitoring for associated renal anomalies. The congenital malformation code is assigned as part of the newborn’s problem list and for coordination of multidisciplinary care. Typical codes: Q51.4, Q51.9}

    Related Codes

    Q50-CONGENITAL-MALFORMATIONS-OF-OVARIES

    ICD-10-CM Code For Congenital Malformations Of Ovaries Fallopian Tubes And Broad Ligaments: Group Overview

    Q52-OTHER-CONGENITAL-MALFORMATIONS-FEMALE-GENITALIA

    ICD-10-CM Code For Other Congenital Malformations Of Female Genitalia: Group Overview

    Q53-UNDESCENDED-AND-ECTOPIC-TESTICLE

    ICD-10-CM Code For Undescended And Ectopic Testicle: Group Overview

    Q54-HYPOSPADIAS

    ICD-10-CM Code For Hypospadias: Group Overview

    Q55-OTHER-CONGENITAL-MALE-GENITAL-MALFORMATIONS

    ICD-10-CM Code For Other Congenital Malformations Of Male Genital Organs: Group Overview

    Q56-INDETERMINATE-SEX-AND-PSEUDOHERMAPHRODITISM

    ICD-10-CM Code For Indeterminate Sex And Pseudohermaphroditism: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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