BW4Imaging, Anatomical Regions, Ultrasonography
- Non-Billable Header
ICD-10-PCS BW4
BW4 is a non-billable ICD-10-PCS code that heads the group for Imaging, Anatomical Regions, Ultrasonography, so it cannot be submitted on a claim; a more specific seven-character code is required. The root operation Ultrasonography involves real time display of images of anatomy or flow information developed from the capture of reflected and attenuated high frequency sound waves.
Code Identity
ICD-10-PCS Code
BW4
Billable Status
No — Non-Billable Header
Code Describes
Imaging, Anatomical Regions, Ultrasonography
Short Description
Imaging, Anatomical Regions, Ultrasonography
Same as the full description in the CMS dataset.
PCS Table Breakdown
Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.
| Position | Designation | Value | Meaning |
|---|---|---|---|
| 1 | Section | B | Imaging |
| 2 | Body System | W | Anatomical Regions |
| 3 | Operation | 4 | Ultrasonography |
In the ICD-10-PCS Alphabetic Index
These FY 2026 ICD-10-PCS Alphabetic Index entries lead to BW4:
Entry for this code family
Entry for this code family
Imaging, diagnostic
Entry for this code family
Mapping, Doppler ultrasound
Entry for this code family
