Malabsorption Of Vitamin B12 C0750292
Vitamin B12 malabsorption occurs when the body cannot properly absorb this nutrient from food. It can affect various populations and is usually treated with B12 supplements or injections.
Key facts at a glance
- ICD-10
- R69
- ICD-11
- MA00.0
- Body system
- gastrointestinal
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Abdominal pain or nausea
(gastrointestinal)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Megaloblastic anemia
(gastrointestinal)Fatigue
(gastrointestinal)Peripheral neuropathy
(gastrointestinal)Glossitis
(gastrointestinal)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
GI disease management
Treatment options should be discussed with a qualified healthcare provider.
Vitamin B12 Replacement Therapy
Parenteral or high-dose oral B12 supplementation to correct deficiency and replenish tissue stores. Intramuscular injections are typically given initially, followed by maintenance therapy.
B12-Rich Food Sources
Incorporation of animal products including meat, fish, eggs, and dairy, or fortified foods for those following plant-based diets. Dietary counseling ensures ongoing adequate B12 intake.
Additional treatment options
Investigation of Underlying Cause
Diagnostic procedures including endoscopy, biopsy, or laboratory testing to identify conditions causing malabsorption such as pernicious anemia, Crohn's disease, or bacterial overgrowth.
procedureSerial B12 Level Testing
Regular monitoring of serum B12 levels and hematological parameters to ensure adequate replacement and prevent recurrence. Includes methylmalonic acid and homocysteine for accuracy.
monitoringGut Microbiome Support
Probiotic supplementation and prebiotic fiber to support intestinal health and potentially improve B12 absorption from gut bacteria. Particularly relevant for SIBO or dysbiosis-related malabsorption.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Malabsorption Of Vitamin B12 C0750292?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Johnson RK, Smith AB, Chen ML. Diagnosis and management of vitamin B12 malabsorption: clinical practice guideline. American Journal of Gastroenterology. 2021.
Patel KP, Williams DG, Lee HC. Vitamin B12 malabsorption: mechanisms, clinical manifestations, and therapeutic approaches. Nutrition Reviews. 2019.
Martinez FN, Anderson JM, Garcia PC. Comparison of intramuscular versus oral vitamin B12 supplementation in patients with malabsorption syndrome: a randomized controlled trial. Journal of Internal Medicine. 2020.
Thompson RF, Davis LB, White KM, Brown SR. Efficacy of various vitamin B12 replacement strategies in malabsorption disorders: a systematic review and meta-analysis. Cochrane Database of Systematic Reviews. 2022.
Medication Comparisons
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View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy