What type of LBP originates from visceral organs or other areas but felt in the lumbar spine?

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Referred pain is at play here. Pain originating from visceral organs can travel to the spinal cord and share the same neuronal pathways as somatic nerves that supply the lower back. The brain then misinterprets the source, so you feel the pain in the lumbar region even though the problem lies elsewhere, such as in the kidneys, pancreas, reproductive organs, or other abdominal structures. This results in a dull, diffuse back ache that isn’t tightly localized to a spinal level and may not follow a typical musculoskeletal pattern. In contrast, mechanical LBP tends to be tied to spine structures and movement, and inflammatory LBP has its own characteristic signs. So when back pain is actually coming from another area but is felt in the lumbar region, it’s best described as referred LBP.