CPT Code 64999 | Description, Procedure & Billing Guidelines (2022)
Use the 64999 CPT code for an unlisted procedure on a patient’s nervous system. Report this code if no more specific CPT code is available.
1. What Is CPT Code 64999?
CPT code 64999 covers nervous system procedures not specified by other CPT codes.
The CPT book describes the 64999 CPT code: “Unlisted procedure, nervous system.”
CPT code 64999 is an unlisted procedural code used for procedures nervous system of a patient. This code can be billed if another CPT code does not describe the procedure on the nervous system.
4. How To Use CPT Code 64999
Make sure to add a cover letter to a claim when you bill CPT code 64999. This is an unlisted procedure; therefore, payers want a letter explaining why this code was chosen.
You can add similar codes in this letter to compare the procedure to those codes and explain why they can’t be used.
You can add other relevant documentation (e.g., operative notes) to prove your claim and prevent denials.
The payers will determine payment based on the documentation you provide with the 64999 CPT code.
The CPT book explains that you can not choose a similar code (but not the same) as the provided service. However, you can use CPT 64999 instead as an unlisted procedure.