Skin, Subcutaneous Tissue and Breast (CH) ICD-10-PCS
The CH body system covers Nuclear Medicine procedures on skin, subcutaneous tissue and breast, with 22 ICD-10-PCS codes across 2 root operations, 20 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 2 operations · 22 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| CH1 | Planar Nuclear Medicine ImagingIntroduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions | 11 | 10 |
| CH2 | Tomographic (Tomo) Nuclear Medicine ImagingIntroduction of radioactive materials into the body for three dimensional display of images developed from the capture of radioactive emissions | 11 | 10 |
The info icon shows the official root operation definition and previews the codes in that range.
About the CH Body System
These codes use radioactive material introduced into the body to make images of breast tissue or skin and the tissue beneath it.
Planar imaging displays captured emissions in a single plane. Tomographic imaging displays them in three dimensions. The body-part choices distinguish the right breast, left breast, both breasts, and a combined skin, tissue beneath the skin, and breast value.
Questions About This Page
How many codes are in the CH body system?
The CH body system contains 22 ICD-10-PCS codes in FY 2027, organized into 2 root operations. 20 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.
