Other vitamin B12 deficiency anemias

This code signifies anemias resulting from a deficiency of vitamin B12 that are not specifically classified as pernicious anemia or other specified types. It encompasses various etiologies of B12 deficiency leading to anemia, such as dietary insufficiency, malabsorption syndromes not meeting criteria for pernicious anemia, or drug-induced deficiencies.

Apply this code when documentation indicates a diagnosis of vitamin B12 deficiency anemia without specific mention of pernicious anemia or other more precisely defined types. Supporting documentation should include laboratory confirmation of low B12 levels and evidence of anemia, along with a physician's diagnostic statement.

• Ensure the documentation explicitly rules out pernicious anemia (D51.0) before assigning this code.
• Investigate underlying causes of the B12 deficiency; if a specific cause is identified (e.g., gastrectomy, Crohn's disease), code that condition first.
• Do not use this code for isolated vitamin B12 deficiency without associated anemia; refer to E53.8 for other specified vitamin B12 deficiencies.