You only need to rebuild index ID on table ID 50099219 - surely the downtime for that is a small price to pay for fixing the corruption?  You could schedule it for a quiet (or at least a less busy) time.  If you have Enterprise Edition, you can do an online index rebuild.

By they way, I would recommend that you use the modern ALTER INDEX REBUILD syntax instead of the deprecated DBCC DBREINDEX.  And don't apply a blanket fill factor of 90 - test what the index's current fill factor is and rebuild with that value - unless you have a good reason to change the fill factor for a particular index.

John