Maximum defined data set

Under HIPAA, necessary data elements for a particular standard based on a certain implementation specification. The sender who creates the transaction may include whatever data the receiver might require. The receiver of the data may ignore any part of the data that is not necessary to carry on its portion of the business transaction unless some unnecessary data are necessary for coordination of benefits with another insurance company.

Maximum foreseeable loss (MFL)

A property underwriter’s estimate of the cost in the event of a total loss where all loss control systems (e.g., sprinklers and firewalls) fail. See Probable maximum loss (PML).
***
Largest loss (usually property loss, but sometimes combined property loss and loss of income) which can occur under the most adverse conditions reasonably foreseeable.
***
US: The worst loss that is likely to occur because of a single event.