Cauda equina syndrome GARD:10987 disease_ontology DOID:11577 A peripheral nervous system disease that involves an acute loss of function of the lumbar plexus, neurologic elements (nerve roots) of the spinal canal below the termination (conus) of the spinal cord. MESH:D000077684 ICD10CM:G83.4 ICD9CM:344.6 UMLS_CUI:C0392548 SNOMEDCT_US_2020_03_01:89356000 NCI:C35436 syndrome peripheral nervous system disease