To use nursing care services under the long-term care insurance system, you must be certified as 'requiring nursing care' (Certification of Long-Term Care Need).
Official welfare-system language. 介護保険 is Japan's national insurance system for elderly care, introduced in 2000. 要介護認定 is the official assessment process determining what level of care a person qualifies for. The sentence exemplifies bureaucratic Japanese: stacked nominal compounds, passive voice, and parenthetical technical terms.