TABLE 3.

Korea Informative Classification of Disease diagnostic codes for postoperative spinal infection included in the study

Diagnostic codes	Diagnosis
M00.08, M00.18, M00.28, M00.98	Pyogenic arthritis, osteomyelitis, vertebral column
M00.09, M00.19, M00.29, M00.99	Pyogenic arthritis, osteomyelitis, site unspecified
M86.0–M86.9	Osteomyelitis
M46.20–M46.29	Osteomyelitis of vertebra
M46.30–M46.39	Infection of intervertebral disc (pyogenic)
M46.50–M46.59	Other infective spondylopathies
T81.4	Infection following a procedure
T84.2–T84.9, T85.7	Infection and inflammatory reaction due to internal orthopaedic prosthetic devices