Shifting from 724.2 to M54.5 shouldn't cause too much pain. If your family physician often diagnoses patients with low back pain (724.2, Lumbago), you'll have a few code changes to keep in mind once ICD-10 goes into effect in 2013. Currently, you report 724.2 for low back pain, low back syndrome, or lumbalgia. Coding instructions direct you to 737.0-737.9 for curvature of the spine and to 732.0 or 732.8 for juvenile or adult osteochondrosis of the spine. ICD-10 difference: Coding tip: