payment (usually by doctors or lawyers) of part of the fee in return for the referral
The practice, usually of questionable ethicality, by some professionals, such as medical doctors and lawyers, of sending a client to a second practitioner for an additional consultation in order to obtain another payment from the client or from his or her insurer, and in return for which the original practitioner receives a portion of the payment made to the second practitioner (a "commission" or "piece of the action").