Insulin Infusion Systems

**Definition:** Portable or implantable devices for infusion of insulin. Includes open-loop systems which may be patient-operated or controlled by a pre-set program and are designed for constant delivery of small quantities of insulin, increased during food ingestion, and closed-loop systems which deliver quantities of insulin automatically based on an electronic glucose sensor.

**Tree numbers:** - E02.319.300.508 - E07.505.508 - E07.858.082.505.508