BY4FZZZUltrasonography of Third Trimester, Single Fetus

BY4FZZZ is the ICD-10-PCS code for a ultrasonography procedure on the third trimester, single fetus using a none approach with none (qualifier: none). In ICD-10-PCS, ultrasonography means real time display of images of anatomy or flow information developed from the capture of reflected and attenuated high frequency sound waves.

In plain terms, this corresponds to diagnostic ultrasound of gravid uterus, the ICD-9-CM procedure title it maps to (88.78).

For a different body part, codes include BY47ZZZ (fetal umbilical cord), BY48ZZZ (placenta), BY49ZZZ (first trimester, single fetus), BY4BZZZ (first trimester, multiple gestation), BY4CZZZ (second trimester, single fetus), BY4DZZZ (second trimester, multiple gestation) and 1 more.

It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.

It has been valid since ICD-10-PCS took effect on October 1, 2015.