Catalog

Encephalopathy due to vitamin B12 deficiency

No MMS code

Link to WHO Definition

Encephalopathy due to vitamin B12 deficiency – http://id.who.int/icd/entity/855744861

This is a disorder of the brain due to vitamin B12 deficiency. It typically occurs in both sexes between age 40 and 90 years old with a peak in prevalence among 60–70 year olds. Occasionally patients can present before the age of 40. The diagnosis is usually clear in the presence of typical neuropsychiatric syndromes associated with megaloblastic anaemia or macrocytosis and a low serum concentration of vitamin B12.