Table 1

Risk classification system and preventive assessment frequency2 10

CategoryCharacteristicFollow-up frequency
0No peripheral neuropathyOnce in a year
1Peripheral neuropathyOnce in every 6 months
2Peripheral neuropathy with peripheral artery disease and/or a foot deformityOnce in every 3–6 months
3Peripheral neuropathy and history of a foot ulcer or lower-extremity amputationOnce in every 1–3 months