Our otherwise healthy dog has had problems with his mouth--ulcers/lacerations, jaw pain, swollen lymph nodes, infection under tongue and at back of mouth, etc. PetFirst covered the first few visits and stopped coverage when we went to the NC State Vet School to see a specialist. They did not cover the visit with the specialist. We are going to an out-of-town dental specialist next week because we have no idea what's going on with this dog's mouth. But, PetFirst considers his condition to be chronic even though there is no diagnosis. Watch out for PetFirst using "chronic" to get out of paying claims even when you are in the process of searching for a diagnosis. They are also slow to handle claims--take longer than they claim.