ICD-10-PCS BY4 Imaging: Fetus and Obstetrical Ultrasonography

The ICD-10-PCS root operation Ultrasonography (BY4) refers to the use of ultrasound imaging to visualize and assess fetal and obstetrical structures within the body. This imaging procedure captures internal images without any incision or radiation exposure.

Within the Imaging section, Ultrasonography is crucial for monitoring fetal development and obstetrical conditions throughout pregnancy. The provided codes specify ultrasound exams targeted at various body parts and pregnancy stages, such as ultrasonography of the Fetal Umbilical Cord (BY47ZZZ), Placenta (BY48ZZZ), or evaluation of a Single Fetus in the first trimester (BY49ZZZ) or third trimester (BY4FZZZ). Other codes delineate studies of Multiple Gestations across trimesters like BY4BZZZ and BY4GZZZ. These specialized codes enable precise documentation of fetal imaging procedures, supporting accurate coding and effective clinical communication.

List of ICD-10-PCS codes used to specify BY4 - Ultrasonography (real time display of images of anatomy or flow information developed from the capture of reflected and attenuated high frequency sound waves). There are a total of 9 procedure codes in this section.

• BY4 - Imaging, Fetus and Obstetrical, Ultrasonography

• BY47ZZZ - Ultrasonography of Fetal Umbilical Cord

• BY48ZZZ - Ultrasonography of Placenta

• BY49ZZZ - Ultrasonography of First Trimester, Single Fetus

• BY4BZZZ - Ultrasonography of First Trimester, Multiple Gestation

• BY4CZZZ - Ultrasonography of Second Trimester, Single Fetus

• BY4DZZZ - Ultrasonography of Second Trimester, Multiple Gestation

• BY4FZZZ - Ultrasonography of Third Trimester, Single Fetus

• BY4GZZZ - Ultrasonography of Third Trimester, Multiple Gestation