{"code":"D51","type":"category","title":"Vitamin B12 deficiency anemia","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["deficiency of other B group vitamins (E53-)"],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["D51.0","D51.1","D51.2","D51.3","D51.8","D51.9"],"inclusionTerms":[],"sibling_titles":{"code":"D51.9","title":"Vitamin B12 deficiency anemia, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Vitamin B12 deficiency anemia is a non-billable ICD-10-CM category code (D51). A more specific billable subcode must be selected for claims submission. Excludes2 (not included here): deficiency of other B group vitamins (E53-).","officialDefinition":"Vitamin B12 deficiency anemia is a non-billable ICD-10-CM category code (D51). A more specific billable subcode must be selected for claims submission. Excludes2 (not included here): deficiency of other B group vitamins (E53-).","seventhCharacterInstructions":[],"workflowProtocols":[],"guidelines":{"whenToUse":[],"whenNotToUse":[],"commonBillingMistakes":[],"codeComparisons":[],"documentationChecklist":[]},"domainLandscape":{"summary":"Primary diagnostic domain and clinical landscape evaluation.","keyCategories":[],"diagnosticContinuum":"Progression continuum from acute presentation to resolution."},"children":[{"code":"D51.0","title":"Vitamin B12 deficiency anemia due to intrinsic factor deficiency","description":"Vitamin B12 deficiency anemia due to intrinsic factor deficiency is a billable ICD-10-CM diagnosis code (D51.0). Inclusion terms: Addison anemia; Biermer anemia; Pernicious (congenital) anemia; Congenital intrinsic factor deficiency. Excludes2 (not included here): deficiency of other B group vitamins (E53-).","isBillable":true,"slug":"d51.0-vitamin-b12-deficiency-anemia-due-to-intrinsic-factor-deficiency"},{"code":"D51.1","title":"Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria","description":"Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria is a billable ICD-10-CM diagnosis code (D51.1). Inclusion terms: Imerslund (Gräsbeck) syndrome; Megaloblastic hereditary anemia. Excludes2 (not included here): deficiency of other B group vitamins (E53-).","isBillable":true,"slug":"d51.1-vitamin-b12-deficiency-anemia-due-to-selective-vitamin-b12-malabsorption"},{"code":"D51.2","title":"Transcobalamin II deficiency","description":"Transcobalamin II deficiency is a billable ICD-10-CM diagnosis code (D51.2). Excludes2 (not included here): deficiency of other B group vitamins (E53-).","isBillable":true,"slug":"d51.2-transcobalamin-ii-deficiency"},{"code":"D51.3","title":"Other dietary vitamin B12 deficiency anemia","description":"Other dietary vitamin B12 deficiency anemia is a billable ICD-10-CM diagnosis code (D51.3). Inclusion terms: Vegan anemia. Excludes2 (not included here): deficiency of other B group vitamins (E53-).","isBillable":true,"slug":"d51.3-other-dietary-vitamin-b12-deficiency-anemia"},{"code":"D51.8","title":"Other vitamin B12 deficiency anemias","description":"Other vitamin B12 deficiency anemias is a billable ICD-10-CM diagnosis code (D51.8). Excludes2 (not included here): deficiency of other B group vitamins (E53-).","isBillable":true,"slug":"d51.8-other-vitamin-b12-deficiency-anemias"},{"code":"D51.9","title":"Vitamin B12 deficiency anemia, unspecified","description":"Vitamin B12 deficiency anemia, unspecified is a billable ICD-10-CM diagnosis code (D51.9). Excludes2 (not included here): deficiency of other B group vitamins (E53-).","isBillable":true,"slug":"d51.9-vitamin-b12-deficiency-anemia-unspecified"}],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":""}