Before revision: Lewy body dementias are classified by the World Health Organization in its ICD-10 , the International Statistical Classification of Diseases and Related Health Problems, in chapter VI, as diseases of the nervous system, code 31.8 .
After revision: Lewy body dementias are classified by the World Health Organization in its ICD-11 , the International Statistical Classification of Diseases and Related Health Problems, in chapter 06, as neurodevelopmental disorders, code 6D82 .