BG4 Ultrasonography - Endocrine System ICD-10-PCS
The BG4 code range contains 6 ICD-10-PCS codes for Ultrasonography procedures on the endocrine system. 5 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 thecapture of reflected and attenuated high frequency sound waves.
Codes in the BG4 Range 6 codes · 5 billable
About the BG4 Code Range
The ICD-10-PCS root operation Ultrasonography (code BG4) involves using ultrasound imaging to produce visual representations of an internal body system or structure. In the Imaging section, this procedure is applied to assess the Endocrine System without any invasive intervention.
Specifically, ultrasonography codes capture the use of sound waves to examine glands such as the Right Adrenal Gland (BG40ZZZ), Left Adrenal Gland (BG41ZZZ), both adrenal glands simultaneously (BG42ZZZ), Parathyroid Glands (BG43ZZZ), and Thyroid Gland (BG44ZZZ). This noninvasive imaging approach provides crucial diagnostic information about these endocrine structures, guiding clinical decision-making while avoiding direct tissue disturbance.
Questions About This Page
How many billable codes are in the BG4 range?
Of the 6 codes in this range, 5 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 BG4 range classify?
The range classifies Ultrasonography procedures, real time display of images of anatomy or flow information developed from thecapture of reflected and attenuated high frequency sound waves, performed on the endocrine 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.
