依照器材的用途，FDA把現有醫療器材產品總共被分成16類、約1700種：
| 862 | Clinical chemistry and clinical toxicology devices | 臨床化學及臨床毒理學 |
| 864 | Hematology and pathology devices | 血液學及病理學 |
| 866 | Immunology and microbiology devices | 免疫學及微生物學 |
| 868 | Anesthesiology devices | 麻醉學 |
| 870 | Cardiovascular devices | 心臟血管醫學 |
| 872 | Dental devices | 牙科學 |
| 874 | Ear, nose, and throat devices | 耳鼻喉科學 |
| 876 | Gastroenterology-urology devices | 胃腸病科學及泌尿科學 |
| 878 | General and plastic surgery devices | 一般及整形外科手術 |
| 880 | General hospital and personal use devices | 一般醫院及個人使用裝置 |
| 882 | Neurological devices | 神經科學 |
| 884 | Obstetrical and gynecological devices | 婦產科學 |
| 886 | Ophthalmic devices | 眼科學 |
| 888 | Orthopedic devices | 骨科學 |
| 890 | Physical medicine devices | 物理醫學科學 |
| 892 | Radiology devices |
放射學科學
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