"CID 10" is a free Android application that allows users to consult the ICD-10 codes by navigating through chapters, groups, categories, and subcategories. Users can also search for specific subcategories or keywords. The app works offline, providing easy access to standardized coding of diseases by the World Health Organization. Features include favorites for commonly used codes, a recent codes list, and information about ICD-10. Note: It does not include ICD-O categories.