ICD-10-PCS 2027 procedure code
BY49ZZZUltrasonography of First Trimester, Single Fetus
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 BY49ZZZ
BY49ZZZ is the ICD-10-PCS code for a ultrasonography procedure on the first 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), BY4BZZZ (first trimester, multiple gestation), BY4CZZZ (second trimester, single fetus), BY4DZZZ (second trimester, multiple gestation), 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
- 9First Trimester, Single Fetus
- 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
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about BY49ZZZ
Is BY49ZZZ a valid ICD-10-PCS code for 2027?
- Yes. BY49ZZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for BY49ZZZ?
- The CMS GEMs map BY49ZZZ to ICD-9-CM 88.78 (Diagnostic ultrasound of gravid uterus).