Neurosurgery Coding Alert

Spinal Bone Graft Codes at a Glance

When reporting bone grafts with spinal fusions (22548-22812) and/or instrumentation (22840-22855), you should choose from among the following five codes, depending on whether the surgeon harvested the graft from the patient's own body (autograft) or received the graft from a bone bank (allograft).

  • 20930 -- Allograft for spine surgery only; morselized
  • 20931 -- ... structural
  • 20936 -- Autograft for spine surgery only (includes harvesting the graft); local (e.g., ribs, spinous process, or laminar fragments) obtained from same incision
  • 20937 -- ... morselized (through separate skin or fascial incision)
  • 20938 -- ... structural, bicortical or tricortical (through separate skin or fascial incision).

    Remember, a structural bone graft consists of a single piece of bone that provides direct support for skeletal structures, while a morselized (or small-segment) graft consists of small pieces of bone joined together to fill bony cavities, primarily to promote new bone growth.

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