I respectfully disagree. I interpret this to be "levels."
Per the ASA Crosswalk parenthetical instruction it states "Code 00670 is appropriate only if procedure is performed in conjunction with an add-on code indicating multi-level procedures or spinal instrumentation"
If you have L2-3 and L3-4 hemilaminotomies CPT 63030 and add-on code 63035 which meets the ASA crosswalk criteria for ASA code 00670.
Julie, CPC
Sorry Walker22. I misinterpreted your response as meaning it had to be different "regions" to qualify for the 00670 code. If your response is stating "levels" within the same "region" qualify for 00670 then we are in agreement. My apologies.
Julie, CPC