A National Service Framework (NSF) was any of several policies set by the National Health Service (NHS) in England to define standards of care for major medical issues such as cancer, coronary heart disease, chronic obstructive pulmonary disease, diabetes, kidney disease, long-term conditions, mental health, old age, and stroke care. A National Service Framework (NSF) was any of several policies set by the National Health Service (NHS) in England to define standards of care for major medical issues such as cancer, coronary heart disease, chronic obstructive pulmonary disease, diabetes, kidney disease, long-term conditions, mental health, old age, and stroke care.