HCPCS 72158

Magnetic resonance (eg, proton) imaging, spinal canal and contents, lumbar spine; without contrast material, followed by contrast material(s) and further sequences

AI EXPLANATION: A lumbar spine MRI with and without contrast is an imaging test that produces detailed pictures of the lower back, including the bones, spinal canal, nerves, and soft tissues. A powerful magnetic field and radio waves generate cross-sectional images without using radiation. The scan begins by taking initial pictures of the spine, followed by an injection of a special imaging dye into a vein so additional pictures can clearly highlight blood vessels, inflammation, or tissue changes.