I believe they can be billed together since they are at separate levels. Per AAOS for CPT 63267 lami at same level is included in 63267.
63267:
"Intraoperative services included in the global service package:
• local infiltration of medication(s), anesthetic, or contrast agent before, during, or at the conclusion of the operation
• suture or staple removal by operating surgeon or designee
• surgical approach, with necessary identification, isolation, and protection of anatomic structures, including hemostasis and minor skin scar revision
• obtaining wound specimen(s) for culture
• wound irrigation
• intraoperative photo(s) and/or video recording, excluding ionizing radiation
• intraoperative supervision and positioning of imaging and/or monitoring equipment by operating surgeon or assistant(s)
• insertion, placement, and removal of surgical drain(s), re-infusion device(s), irrigation tube(s), or catheter(s)
• closure of wound and repair of tissues divided for initial surgical exposure, partial or complete
• application of initial dressing, orthosis, or continuous passive motion, except where specifically excluded from global package
• laminectomy at same level (eg, 63047)
• removal of posterior elements at same level (eg, 22102)
Intraoperative services not included in the global service package:
• conscious sedation, regional block(s), Bier block(s)
• supplies and medication (eg, code 99070, HCPCS Level II codes)
• insertion, removal, or exchange of nonbiodegradable drug delivery implants (eg, 11981—11983)
• harvesting of graft through separate skin or fascial excision, distant site
• arthrodesis (eg, 22554, 22585)
• instrumentation (eg, 22840, 22842, 22845, 22846) "
