Is a misdiagnosis considered medical malpractice?

The answer is yes. Misdiagnosis can be, depending on the circumstances, considered medical malpractice. But, there’s a second issue that needs to be decided and that is did the misdiagnosis caused significant injury? If there’s no significant injury, then there’s really not a viable claim. But, in any event, if you have a misdiagnosis and you have a significant injury, at least what you perceive to be a significant injury, contact the appropriate council as soon as possible.