All non urgent outpatient clinics and operations at hospitals in Lincoln, Boston, Grantham and Louth are cancelled again today.
The bad weather means many staff have not been able to get in.
Newark hospital say they too, are cancelling many outpatient and surgical appointments.
It is a slightly better picture at Grimsby and Scunthorpe hospitals where managers say the majority of appointments will be able to go ahead today.
All our hospital trusts say they will be in touch with patients who are affected.