AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2023 Issue 3; Ask the Editor

Metastatic Gestational Trophoblastic Disease

A patient was admitted for antineoplastic chemotherapy due to post-molar pregnancy gestational trophoblastic disease/gestational trophoblastic neoplasia (GTD/GTN). The patient had a past medical history of molar pregnancy, status post dilation and curettage. Pelvic ultrasound confirmed a retained molar pregnancy. The provider’s final diagnostic statement listed, stage III GTN with right-sided posterior myometrium and endometrium mass, multiple bilateral metastatic nodules of the lung, adnexal mass, and presumed metastatic vaginal lesion. ICD-10-CM classifies malignant hydatidiform mole to code D39.2, Neoplasm of uncertain behavior of placenta. Is code D39.2 appropriate for a patient with post-molar GTD/GTN with metastatic sites? How are the metastatic sites captured? ...

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