BB4CZZZUltrasonography of Mediastinum
- Billable / Specific Code
BB4CZZZ is a billable ICD-10-PCS procedure code for Ultrasonography of Mediastinum. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027). 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. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Ultrasonography.
Code Identity
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 | B | Respiratory System |
| 3 | Type | 4 | Ultrasonography |
| 4 | BodyPart | C | Mediastinum |
| 5 | Contrast | Z | None |
| 6 | Qualifier | Z | None |
| 7 | Qualifier | Z | None |
In the ICD-10-PCS Alphabetic Index
These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:
To code ultrasonography of the mediastinum, open the FY 2027 ICD-10-PCS Alphabetic Index at Ultrasonography, then the subterm Mediastinum. The entry lists BB4CZZZ directly as a complete, billable code.
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.
Similar Procedure Codes
Questions About BB4CZZZ
Is BB4CZZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Ultrasonography of Mediastinum on inpatient claims from October 1, 2026 through September 30, 2027.
What is the ICD-10-PCS code for ultrasonography of the mediastinum?
The FY 2027 ICD-10-PCS Alphabetic Index entry Ultrasonography, Mediastinum is a direct entry for BB4CZZZ, Ultrasonography of Mediastinum, billable on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in BB4CZZZ mean?
The code breaks down character by character: the 1st character B is the Section (Imaging); the 2nd character B is the Body System (Respiratory System); the 3rd character 4 is the Type (Ultrasonography); the 4th character C is the BodyPart (Mediastinum); the 5th character Z is the Contrast (None); the 6th character Z is the Qualifier (None); the 7th character Z is the Qualifier (None).
What is the ICD-9-PCS equivalent of BB4CZZZ?
Under the General Equivalence Mappings, Ultrasonography of Mediastinum crosswalks to ICD-9-PCS 88.73 (Diagnostic ultrasound of other sites of thorax). The mapping is approximate, so confirm it fits the documentation.
