[Development and implementation of the Chronicity Strategy for the Basque Country (Spain): lessons learned].

Public healthcare in the Basque Country (Spain) faces high rates of ageing and chronicity, which stress the sustainability of the system. In response to this situation, the Basque Chronicity Strategy was launched in 2010. This large-scale and far-reaching transformation initiative focused on changing the healthcare provision model towards integrated care of chronicity. Developed in the context of economic and financial crisis, strong political opposition and resistance or passivity of many relevant stakeholders, the design and implementation of the Strategy introduced some noteworthy elements, such as: a narrative of change different to the austerity discourse, which was the dominant narrative at that time; a strategic approach supported by an evidence base and solid theoretical references; and an implementation strategy that favoured local innovation and the "bottom up" approach. In spite of this, it was not possible to overcome the political barriers or bureaucratic immobility, which limited the implementation and scope of the changes, especially those related to the scalability of successful local innovations. However, some changes in the healthcare integration culture at clinical and managerial level have been introduced as a result of the Strategy, as well as organisational progression towards a chronicity-targeted healthcare model.