Skin, Subcutaneous Tissue and Breast (BH) ICD-10-PCS
The BH body system covers Imaging procedures on skin, subcutaneous tissue and breast, with 54 ICD-10-PCS codes across 3 root operations, 51 of them billable in fiscal year 2027. 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 · 54 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 | 20 | 19 |
| 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 | 25 | 24 |
| BH4 | UltrasonographyReal time display of images of anatomy or flow information developed from thecapture of reflected and attenuated high frequency sound waves | 9 | 8 |
The info icon shows the official root operation definition and previews the codes in that range.
About the BH Body System
Imaging here shows the breasts, mammary ducts, tissue beneath the skin, and regions such as the chest wall, abdominal wall, head, neck and limbs. The body-part character distinguishes the right, left or both breasts, single or multiple ducts on either side, and specific tissue or body regions.
Plain radiography captures an image using external radiation. MRI uses signals in a magnetic field to create images from multiple planes. Ultrasonography uses reflected sound waves to show anatomy or flow in real time.
Mammography means breast imaging, while mammary ductography, also called a ductogram, images mammary ducts.
Questions About This Page
How many codes are in the BH body system?
The BH body system contains 54 ICD-10-PCS codes in FY 2027, organized into 3 root operations. 51 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 2027 ICD-10-PCS order file and code tables, effective October 1, 2026 through September 30, 2027.
