ICD-9-CM 181 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 181 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
2015/16 ICD-10-CM C58 Malignant neoplasm of placenta
Approximate Synonyms
Cancer of the placenta
Cancer of the placenta, choriocarcinoma
Choriocarcinoma
Choriocarcinoma, placenta
Female choriocarcinoma
Gestational choriocarcinoma
Placental cancer
Primary malignant neoplasm of placenta
Clinical Information
A malignant neoplasm arising from decidua (placental) cells
A rare cancer in women of childbearing age in which cancer cells grow in the tissues that are formed in the uterus after conception. Also called gestational trophoblastic disease, gestational trophoblastic neoplasia, gestational trophoblastic tumor, or molar pregnancy
An aggressive malignant tumor arising from trophoblastic cells. The vast majority of cases arise in the uterus and represent gestational choriocarcinomas that derive from placental trophoblastic cells. Approximately half of the cases develop from a complete hydatidiform mole. A minority of cases arise in the testis or the ovaries. There is often marked elevation of human chorionic gonadotropin (hcg) in the blood. Choriocarcinomas disseminate rapidly through the hematogenous route; the lungs are most frequently affected
Malignant metastatic form of trophoblastic tumors, contains sheets of undifferentiated cytotrophoblasts and syncytiotrophoblasts; characterized by the large amounts of chorionic gonadotropin produced; tissue origins can be placental (fetal) or non-placental
2015 ICD-9-CM Diagnosis Code 181 
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chorionic (M9100/3)
specified site - see Neoplasm, by site, malignant
