2.11 Where several conditions combine to produce incapacity
Where there are both accepted compensable conditions and non-compensable conditions contributing to a person’s incapacity, i.e. the incapacity is a result of a combination of causes, delegates should consider whether:
the compensable component of the whole suite of incapacitating factors would give rise to an incapacity regardless of other factors.
the compensable condition, when added to any non-compensable conditions, leads to the person becoming incapacitated, or more incapacitated, then liability to make incapacity payments exists.