What does it mean to have a high hematology sed rate? urgent

Not specific: High erythrosedimentation rate or high ESR. It is used as a tool very often to find out levels of inflammation but is not specific or diagnostic of one disease. If it is normal then most likely there is no active inflammation ( that can be due to rheumatologic disorders), malignancy or infecions. But if high, then it matter most in which context was done because may signified any of those 3.