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266 Deficiency of B-complex components. 266.0 Ariboflavinosis; 266.2 B12 deficiency w/o anemia; 267 Ascorbic acid deficiency; 268 Vitamin D deficiency; 269 Other nutritional deficiencies. 269.0 Deficiency of vitamin K; 269.1 Deficiency of other vitamins; 269.2 Unspecified vitamin deficiency; 269.3 Mineral deficiency, not elsewhere classified
A diagnosis of vitamin B 12 deficiency is determined by blood levels lower than 200 or 250 picograms per ml (148 or 185 picomoles per liter). Measurement of blood methylmalonic acid (MMA), a vitamin B 12-associated metabolite, is a commonly used biomarker. [2]
The Schilling test distinguished PA from other forms of B 12 deficiency, [50] specifically, from Imerslund–Gräsbeck syndrome, a B 12-deficiency caused by mutations in CUBN that codes for cubilin the cobalamin receptor. [1] Vitamin B12 deficiency is also prevalent in patients having Crohn's disease (CD) so it should be differentiated. [62]
ICD-9 chapters; Chapter Block Title I 001–139: Infectious and Parasitic Diseases II 140–239: Neoplasms III 240–279: Endocrine, Nutritional and Metabolic Diseases, and Immunity Disorders IV 280–289: Diseases of the Blood and Blood-forming Organs V 290–319: Mental Disorders VI 320–389: Diseases of the Nervous System and Sense Organs ...
Other symptoms of vitamin B12 deficiency include memory loss, fatigue and weakness, nerve damage causing numbness and tingling in the arms and legs, dementia, depression, and seizures.
A diagnosis of vitamin B 12 deficiency is determined by blood levels lower than 200 or 250 picograms per ml (148 or 185 picomoles per liter). [3] Some people can have symptoms with their normal levels of the vitamin, or may have low levels despite having no symptoms. [5] Other tests may be done to ensure individuals status. [3]
[6] [15] [26] Vitamin B 12 deficiency can also cause symptoms of mania and psychosis. [27] [28] Among other problems, weakened immunity, reduced fertility and interruption of blood circulation in women may occur. [29] The main type of vitamin B12 deficiency anemia is pernicious anemia, [30] characterized by a triad of symptoms:
Folate deficiency can be secondary to vitamin B 12 deficiency or a defect in homocysteine methyl transferase that leads to a "folate trap" in which is an inactive metabolite that cannot be recovered. [1] Diagnosis is typically confirmed by blood tests, including a complete blood count, and serum folate levels. [1]