BB4Imaging, Respiratory System, Ultrasonography

  • Non-Billable Header
ICD-10-PCS BB4
CMS Source: FY 2027 ICD-10-PCS dataset. Effective Oct 1, 2026 – Sep 30, 2027.FacebookXLinkedInPrint

BB4 is a non-billable ICD-10-PCS code that heads the group for Imaging, Respiratory System, 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
BB4
Billable Status
No — Non-Billable Header
Code Describes
Imaging, Respiratory System, Ultrasonography
Short Description
Imaging, Respiratory System, 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.

PositionDesignationValueMeaning
1SectionBImaging
2Body SystemBRespiratory System
3Operation4Ultrasonography

In the ICD-10-PCS Alphabetic Index

These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:

Leads to this code's table
Leads to this code's table
Imaging, diagnostic
Leads to this code's table
Mapping, Doppler ultrasound
Leads to this code's table

To code imaging of the diagnostic, open the FY 2027 ICD-10-PCS Alphabetic Index at Imaging, then the subterm diagnostic. The index leads to table BB4, where the approach, device and qualifier values shown in the breakdown above complete the seven-character code BB4.

Browse the full ICD-10-PCS Alphabetic Index →

Similar Procedure Codes

Questions About BB4

Is BB4 a billable code?

No. This is an incomplete heading for Imaging, Respiratory System, Ultrasonography and cannot be submitted on a claim. A complete seven-character code is required, such as BB4BZZZ and BB4CZZZ.