B04 Ultrasonography - Central Nervous System ICD-10-PCS
The B04 code range contains 3 ICD-10-PCS codes for Ultrasonography procedures on the central nervous system. 2 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.
Root Operation Definition
Ultrasonography: Real time display of images of anatomy or flow information developed from the capture of reflected and attenuated high frequency sound waves.
Codes in the B04 Range 3 codes · 2 billable
About the B04 Code Range
The ICD-10-PCS root operation Ultrasonography (code B04) involves using high-frequency sound waves to create images of internal body structures. This technique is part of the Imaging section, focusing on noninvasive visualization without use of ionizing radiation.
Specifically, ICD-10-PCS Ultrasonography codes cover imaging of the Central Nervous System, such as the Brain (code B040ZZZ) and the Spinal Cord (code B04BZZZ). These procedures aid in the diagnosis and assessment of neurological conditions by providing real-time images of critical neural structures. The ultrasonography approach is valuable for safely evaluating anatomy and pathology when other imaging modalities may be contraindicated or less effective. Proper use of these codes ensures clear clinical documentation of ultrasonographic imaging performed on the CNS, supporting accurate coding and patient care management.
Questions About This Page
How many billable codes are in the B04 range?
Of the 3 codes in this range, 2 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.
What does the B04 range classify?
The range classifies Ultrasonography procedures, real time display of images of anatomy or flow information developed from the capture of reflected and attenuated high frequency sound waves, performed on the central nervous system. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
