64421 Njx aa and/or strd ntrcost nerve each
Also known as: additional intercostal nerve block, intercostal extension
Injection of anesthetic and/or steroid into intercostal nerve, each additional injection. Add-on code for injecting additional intercostal nerves.
In Plain Language
additional pain relief injection for rib nerves
Clinical Context
Applied when intercostal nerve blocks are performed at multiple rib levels.
RVU Breakdown
| Work RVU | 0.49 |
| Total RVU | 0.49 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
As a surgical CPT code, proper documentation must include the operative report detailing the procedure performed, patient positioning, approach, findings, and any complications. Ensure the diagnosis code (ICD-10) supports medical necessity for the procedure.
How This Code Compares
With a work RVU of 0.49, this code ranks in the 1st percentile among Surgery codes — 16.3x below the median (8.00). The highest wRVU in this category is 106.19.
Specialties
Frequently Asked Questions
What is CPT code 64421?
CPT 64421 (Njx aa and/or strd ntrcost nerve each) is a Surgery code. Injection of anesthetic and/or steroid into intercostal nerve, each additional injection. Add-on code for injecting additional intercostal nerves.
What is the wRVU value for CPT 64421?
The work RVU for CPT 64421 is 0.49. This code is primarily used by Anesthesiology, Pain Management.
When is CPT 64421 used?
Applied when intercostal nerve blocks are performed at multiple rib levels.
Track This Code in RVU Edge
Log procedures, calculate wRVUs, and benchmark against MGMA data — all in one app.
CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.