Lymphatic and Hematologic System (C7) ICD-10-PCS
The C7 body system covers Nuclear Medicine procedures on lymphatic and hematologic system, with 112 ICD-10-PCS codes across 4 root operations, 104 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 4 operations · 112 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 | 50 | 48 |
| 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 | 8 | 6 |
| 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 | 36 | 34 |
| 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 | 18 | 16 |
The info icon shows the official root operation definition and previews the codes in that range.
About the C7 Body System
The ICD-10-PCS root operation within the Lymphatic and Hematologic System under Nuclear Medicine involves the introduction of radioactive materials into the body to gather diagnostic information. This operation focuses on capturing radioactive emissions to analyze biological functions without invasive surgery.
Specifically, the codes represent various nuclear medicine techniques: Planar Nuclear Medicine Imaging (C71) acquires single-plane images by detecting radioactive emissions. Tomographic Nuclear Medicine Imaging (C72) enhances this by producing three-dimensional images for more detailed visualization. Nonimaging Nuclear Medicine Probe (C75) uses radioactive tracers to observe distribution patterns or absorbance without producing images. Lastly, the Nonimaging Nuclear Medicine Assay (C76) targets body fluids and blood elements to study physiological processes through emission detection. These nuclear medicine procedures are essential for diagnosing and monitoring lymphatic and hematologic conditions with precision.
Questions About This Page
How many codes are in the C7 body system?
The C7 body system contains 112 ICD-10-PCS codes in FY 2026, organized into 4 root operations. 104 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.
