In simple words: This code describes a type of abnormal growth in the uterus during pregnancy. It's called a hydatidiform mole and is a benign growth most of the time, but in rare cases, it can turn into a more serious condition. The doctor uses this code when they can't specify the exact type of mole.

O01.9, Hydatidiform mole, unspecified, is an ICD-10-CM code that classifies a gestational trophoblastic disease where the exact type of hydatidiform mole is unknown.Hydatidiform moles are abnormal growths in the uterus that develop from trophoblast cells (cells that normally help an embryo attach to the uterus and form the placenta). They are characterized by the presence of many cysts (fluid-filled sacs).While usually benign, they can sometimes become invasive or even malignant (choriocarcinoma).This code is used when the specific type (complete, partial, or classical) cannot be determined.Use additional code from category O08 to specify any associated complications.

Example 1: A 30-year-old woman presents with vaginal bleeding and elevated hCG levels. Ultrasound reveals a heterogeneous mass in the uterus consistent with a hydatidiform mole. The exact type cannot be definitively determined pre-operatively. Code O01.9 is assigned., A 25-year-old woman undergoes a dilation and curettage (DC) due to abnormal uterine bleeding. Pathology confirms the presence of a hydatidiform mole, but further microscopic examination is inconclusive regarding the specific subtype.O01.9 is used. , A 35-year-old patient with a history of a previous molar pregnancy presents with symptoms suggestive of a recurrence. Imaging shows a suspicious mass, but the type of mole cannot be determined with certainty before surgery. O01.9 is the most appropriate code.

* Patient history including symptoms (e.g., vaginal bleeding, abdominal pain, elevated hCG).* Physical examination findings.* Ultrasound imaging report with details of the uterine mass.* Pathology report from the surgical specimen confirming the diagnosis of hydatidiform mole and any further details.* Any other relevant investigations (e.g., serum hCG levels).

** This code should be used only when the specific type of hydatidiform mole cannot be determined.It's crucial to document the findings thoroughly to justify the use of this unspecified code.Close follow-up is required for patients with hydatidiform moles to monitor for potential complications.The information provided here is for informational purposes only and should not be considered medical advice. Consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.