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ICD-10-PCS 2027 procedure code

BY4DZZZUltrasonography of Second Trimester, Multiple Gestation

✓ Valid for 2027Female only

Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About BY4DZZZ

BY4DZZZ is the ICD-10-PCS code for a ultrasonography procedure on the second trimester, multiple gestation 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), BY4FZZZ (third trimester, single fetus) 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.

What each character means

1. Section
BImaging
2. Body System
YFetus and Obstetrical
3. Type
4Ultrasonography

Real time display of images of anatomy or flow information developed from the capture of reflected and attenuated high frequency sound waves

4. Body Part
DSecond Trimester, Multiple Gestation
5. Contrast
ZNone
6. Qualifier
ZNone
7. Qualifier
ZNone

Other versions of this procedure

ICD-9-CM equivalent

Converter →
  • 88.78Diagnostic ultrasound of gravid uterusapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about BY4DZZZ

Is BY4DZZZ a valid ICD-10-PCS code for 2027?

Yes. BY4DZZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for BY4DZZZ?

The CMS GEMs map BY4DZZZ to ICD-9-CM 88.78 (Diagnostic ultrasound of gravid uterus).