What level of disability does flat feet belong to?

In general, simple flat feet do not constitute a disability. They may only be considered within the scope of disability assessment when accompanied by severe functional impairments that significantly affect daily life and work. If there are concerns, it is recommended to seek medical consultation early. The detailed analysis is as follows:

Most individuals with flat feet only exhibit collapsed arches without significant discomfort, or experience mild fatigue after physical activity. Their ability to walk, exercise, and perform daily activities remains unaffected. Such cases do not meet the criteria for disability classification and do not require grading; symptoms can usually be improved with orthotic insoles or functional training.

A minority of flat feet cases, caused by congenital developmental abnormalities or acquired injuries, are associated with severe pain and deformities in the foot and ankle, leading to difficulty walking, inability to stand for prolonged periods, or participate in normal labor. When symptoms persist despite long-term treatment and significantly impair self-care and social participation, individuals may apply for a formal disability assessment. A professional institution will then determine whether a disability rating is warranted and assign the appropriate level based on the degree of functional impairment.

Whether flat feet constitute a disability must be formally evaluated by an authorized professional institution—self-diagnosis is not acceptable. Individuals experiencing symptoms such as foot or ankle pain and restricted movement should seek timely intervention to prevent worsening of functional limitations. Those applying for disability assessment should prepare complete medical records and follow the local procedures accordingly.