C7551ZZNonimaging Nuclear Medicine Probe of Head and Neck Lymphatics using Technetium 99m (Tc-99m)
- Billable / Specific Code
C7551ZZ is a billable ICD-10-PCS procedure code for Nonimaging Nuclear Medicine Probe of Head and Neck Lymphatics using Technetium 99m (Tc-99m). It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027). The root operation Nonimaging Nuclear Medicine Probe involves introduction 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. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Radionuclide therapy and non-imaging procedures.
Code Identity
PCS Table Breakdown
Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.
| Position | Designation | Value | Meaning |
|---|---|---|---|
| 1 | Section | C | Nuclear Medicine |
| 2 | Body System | 7 | Lymphatic and Hematologic System |
| 3 | Type | 5 | Nonimaging Nuclear Medicine Probe |
| 4 | BodyPart | 5 | Lymphatics, Head and Neck |
| 5 | Radionuclide | 1 | Technetium 99m (Tc-99m) |
| 6 | Qualifier | Z | None |
| 7 | Qualifier | Z | None |
In the ICD-10-PCS Alphabetic Index
These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.
Similar Procedure Codes
Questions About C7551ZZ
Is C7551ZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Nonimaging Nuclear Medicine Probe of Head and Neck Lymphatics using Technetium 99m (Tc-99m) on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in C7551ZZ mean?
The code breaks down character by character: the 1st character C is the Section (Nuclear Medicine); the 2nd character 7 is the Body System (Lymphatic and Hematologic System); the 3rd character 5 is the Type (Nonimaging Nuclear Medicine Probe); the 4th character 5 is the BodyPart (Lymphatics, Head and Neck); the 5th character 1 is the Radionuclide (Technetium 99m (Tc-99m)); the 6th character Z is the Qualifier (None); the 7th character Z is the Qualifier (None).
What is the ICD-9-PCS equivalent of C7551ZZ?
Under the General Equivalence Mappings, Nonimaging Nuclear Medicine Probe of Head and Neck Lymphatics using Technetium 99m (Tc-99m) crosswalks to ICD-9-PCS 92.09 (Other radioisotope function studies). The mapping is approximate, so confirm it fits the documentation.
