The inpatient service consists primarily of children with diabetes mellitus who are admitted for initiation of therapy and training at the time of diagnosis or are admitted later because of diabetes-related or other medical problems.

In addition, the inpatient service serves as a consultative service for other divisions and departments within the hospital. These patients include a wide range of disorders:

The division performs various endocrine diagnostic testing procedures at the Infusion Center of St. Louis Children's Hospital. These tests are planned, supervised, and subsequently interpreted by the physicians within the division.