International Classification of Diseases, 9th Revision, Clinical Modification Diagnosis and Procedure Codes Used to Select or Exclude Patients18
| Inclusion codes | Back Pain |
|---|---|
| 721.3 | Lumbosacral spondylosis without myelopathy |
| 721.42 | Spondylogenic compression of lumbar spinal cord |
| 722.10 | Displacement of lumbar intervertebral disc without myelopathy |
| 722.32 | Schmorl's nodes, lumbar |
| 722.52 | Degeneration of lumbar or lumbosacral intervertebral disc |
| 722.73 | Intervertebral disc disorder with myelopathy, lumbar |
| 722.83 | Postlaminectomy syndrome, lumbar |
| 722.93 | Other and unspecified disc disorder, lumbar |
| 724.02 | Spinal stenosis, lumbar |
| 724.2 | Lumbago; low back pain |
| 724.3 | Sciatica |
| 724.5 | Backache, unspecified |
| 724.6 | Disorders of sacrum |
| 738.4 | Acquired spondylolisthesis |
| 739.3, 739.4 | Somatic dysfunction, lumbar region or sacral region |
| 756.11 | Spondylolysis, lumbosacral region |
| 756.12 | Spondylolisthesis |
| 805.4, 805.6 | Vertebral fracture without spinal cord injury, closed, lumbar, sacrum, or coccyx |
| 846.0–846.9 | Sprains and strains of sacroiliac region |
| 847.2, 847.3 | Sprains and strains, lumbar or sacrum |
| Exclusion codes | |
| 140–239.9 | Neoplasms |
| 324.1 | Intraspinal abcess |
| 730–730.99 | Osteomyelitis |
| 805.1, 805.3, 805.5, 805.7, 805.9 | Open vertebral fractures |
| 03.2–03.29 | Chordotomy (procedure code) |