Lymphatic and Hematologic System (C7) ICD-10-PCS
The C7 body system covers Nuclear Medicine procedures on lymphatic and hematologic system, with 56 ICD-10-PCS codes across 4 root operations, 52 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 4 operations · 56 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| C71 | Planar Nuclear Medicine ImagingIntroduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions | 25 | 24 |
| C72 | Tomographic (Tomo) Nuclear Medicine ImagingIntroduction of radioactive materials into the body for three dimensional display of images developed from the capture of radioactive emissions | 4 | 3 |
| C75 | Nonimaging Nuclear Medicine ProbeIntroduction of radioactive materials into the body for the study of distribution and fate of certain substances by the detection of radioactive emissions; or, alternatively, measurement of absorption of radioactive emissions from an external source | 18 | 17 |
| C76 | Nonimaging Nuclear Medicine AssayIntroduction of radioactive materials into the body for the study of body fluids and blood elements, by the detection of radioactive emissions | 9 | 8 |
The info icon shows the official root operation definition and previews the codes in that range.
About the C7 Body System
These nuclear medicine codes cover imaging and nonimaging studies of blood, bone marrow, spleen, and lymphatics in named regions of the body.
Planar imaging displays images in a single plane, while tomographic imaging displays images with depth. Both detect emissions from radioactive materials introduced into the body. A nonimaging probe studies where substances go or measures absorption of emissions from an external source. A nonimaging assay studies body fluids and blood elements by detecting radioactive emissions. The body-part character identifies blood, bone marrow, spleen, or a named lymphatic region.
Questions About This Page
How many codes are in the C7 body system?
The C7 body system contains 56 ICD-10-PCS codes in FY 2027, organized into 4 root operations. 52 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.
