Skin, Subcutaneous Tissue and Breast (BH) ICD-10-PCS
The BH body system covers Imaging procedures on skin, subcutaneous tissue and breast, with 108 ICD-10-PCS codes across 3 root operations, 102 of them billable in fiscal year 2026. Each root operation defines a distinct procedural objective, and the info icons show the official definition with a preview of the codes inside.
Root Operations in This Body System 3 operations · 108 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| BH0 | Plain RadiographyPlanar display of an image developed from the capture of external ionizingradiation on photographic or photoconductive plate | 40 | 38 |
| BH3 | Magnetic Resonance Imaging (MRI)Computer reformatted digital display of multiplanar imagesdeveloped from the capture of radiofrequency signals emitted by nuclei in a body site excitedwithin a magnetic field | 50 | 48 |
| BH4 | UltrasonographyReal time display of images of anatomy or flow information developed from thecapture of reflected and attenuated high frequency sound waves | 18 | 16 |
The info icon shows the official root operation definition and previews the codes in that range.
About the BH Body System
The ICD-10-PCS root operation BH pertains to imaging of the skin, subcutaneous tissue, and breast. This operation involves obtaining diagnostic images to visualize these body parts without invasive methods.
Within the Imaging classification, BH covers various advanced techniques used to capture detailed anatomical and functional information. Examples include Plain Radiography, which uses external ionizing radiation to create planar images; Magnetic Resonance Imaging (MRI), which generates multiplanar digital images by capturing radiofrequency signals in a magnetic field; and Ultrasonography, offering real-time images derived from high-frequency sound waves reflected from tissues. These imaging methods allow healthcare professionals to noninvasively assess the structure and condition of the skin, subcutaneous tissue, and breast, making the use of accurate codes essential for procedural documentation and clinical communication.
Questions About This Page
How many codes are in the BH body system?
The BH body system contains 108 ICD-10-PCS codes in FY 2026, organized into 3 root operations. 102 of them are billable on inpatient claims.
What is a root operation?
The root operation is the third character of every ICD-10-PCS code and names the objective of the procedure. Drainage takes fluid out, Excision cuts out a portion of a body part, and Resection removes all of one. Picking the right root operation is the central skill of PCS coding, so each one above carries its official CMS definition.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
