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2025 ICD-10-CM code Q51.21

Complete doubling of uterus, also known as uterus didelphys, is a congenital malformation where the uterus is completely duplicated.

The code Q51.21 should be used when the documentation clearly indicates complete duplication of the uterus. If the duplication is partial or other uterine anomalies are present, other appropriate codes within the Q51 series should be considered.

Medical necessity is established by the presence of symptoms or complications, such as recurrent pregnancy loss, preterm labor, or infertility, related to the uterine anomaly. Treatment may involve surgical intervention or assisted reproductive technologies, depending on the patient's specific clinical circumstances.

Diagnosis and management are typically handled by gynecologists or obstetricians specializing in reproductive endocrinology and infertility.

In simple words: A woman with a complete double uterus has two uteruses instead of one. This is a birth defect that happens before she is born.

Complete doubling of uterus (uterus didelphys) is a congenital anomaly where the uterus is completely duplicated, often with two separate cervices and sometimes two separate vaginas. This condition results from a failure of the Müllerian ducts to fuse during fetal development.

Example 1: A 25-year-old woman presents with recurrent miscarriages and is found to have a complete double uterus upon imaging., A 30-year-old woman experiences difficulty conceiving and undergoes a hysterosalpingogram revealing a double uterus., An 18-year-old woman experiences painful menstruation and is diagnosed with a double uterus.

Diagnostic imaging (ultrasound, MRI, or hysterosalpingogram) confirming the complete duplication of the uterus, including the presence of two cervices and possibly two vaginas, should be documented.

** This condition can be associated with other congenital anomalies of the reproductive and urinary systems. Therefore, a comprehensive evaluation should be conducted.

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