Skin immediately around the umbilicus is supplied by
The immediately around the umbilicus is supplied by the 10th thoracic spinal nerve. The umbilicus itself lies in the junction of the veebrae L3 and L4. ref - BDC 6e vol2 pg198-200
Anterior cutaneous branches of thoracoabdominal nerve T10
Lateral cutaneous branches of thoracoabdominal nerve T10
Anterior cutaneous branches of thoracoabdominal nerve T12
Lateral cutaneous branches of thoracoabdominal nerve T12
Abdomen and pelvis