icd 9 code for injection of vitamin b12 Deficiency πΉ Causes megaloblastic (macrocytic) anemia πΉ Needed DNA synthesis and neurologic function πΉ Pernicious anemia = classic cause (lack intrinsic factor) Causes πΉ Pernicious anemia πΉ Vegan Packaging::5mg why b12 injection is cats supplemets
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