Need advice on mold.

I have discovered mold that has developed behind my cabinets and inside my walls due to wind driven rain. I told the adjuster when he came by that I thought there was mold and he said it wasn't an issue. Since I have moved the dishwasher I can see it on the walls. Any idea how I should proceed? Pull out he cabinets and sheetrock? Call a professional and let them deal with it?