| Item | Obligations |
|---|---|
| Computer Systems Design Services | $3.2B |
| Administrative Management and General Management Consulting Services | $2B |
| Other Computer Related Services | $1.9B |
| Custom Computer Programming Services | $1.5B |
| Research and Development in Biotechnology (except Nanobiotechnology) | $1.4B |
| Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $1.4B |
| Direct Health and Medical Insurance Carriers | $1.3B |
| All Other Professional, Scientific, and Technical Services | $1.2B |
| Commercial and Institutional Building Construction | $1.2B |
| Pharmaceutical Preparation Manufacturing | $692M |
Computer Systems Design Services was Health and Human Services's largest contract category, with $3.2B obligated (14.0% of contract spending).