How long do I have to file such a claim?

Maryland and the District of Columbia each have somewhat different rules for determining how long one has to bring a claim.  The basic legal limit involves a concept called the statute of limitations.  While there are exceptions, the general rule is that any such claim must be filed with the appropriate court or arbitration office within 3 years of injury.  The analysis involving how long one has to file a claim is very complex and often will require detailed analysis by a medical malpractice lawyer experienced in such matters.