Invasion of chorionic villi occurs through the myometrium penetrating the uterine serosa.
O43.23 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2023 edition of ICD-10-CM O43.23 became effective on October 1, 2022.
This is the American ICD-10-CM version of O43.23 – other international versions of ICD-10 O43.23 may differ.