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ICD Hub / Diseases of the blood or blood-forming organs (D50–D89) / 3A01.4 - Vitamin B12 deficiency anaemia due to intestinal disease
ICD-11

ICD-11 Codes
for 3A01.4 - Vitamin B12 deficiency anaemia due to intestinal disease
Teodor Jurukovski January 1, 1970
Fact checked by: Teodor Jurukovski
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Synonyms and Alternative Terms

This condition, identified by the ICD-11 code `3A01.4`, is also known by terms such as Vitamin B12 deficiency anaemia secondary to intestinal disease, cobalamin deficiency anaemia due to intestinal malabsorption, and megaloblastic anaemia caused by intestinal factors.

Clinical Overview of Vitamin B12 Deficiency Anaemia Due to Intestinal Disease

The ICD-11 code `3A01.4` specifically denotes `Vitamin B12 deficiency anaemia due to intestinal disease`. This is a form of megaloblastic anaemia where the body's inability to absorb sufficient vitamin B12 (cobalamin) from the digestive system leads to a deficiency. This malabsorption is directly attributable to underlying intestinal conditions, impacting the production of healthy red blood cells.

Root Causes: Intestinal Issues Affecting Vitamin B12 Absorption

The primary drivers for `Vitamin B12 deficiency anaemia due to intestinal disease` are conditions that impair the small intestine's ability to absorb vitamin B12 (cobalamin). These can include malabsorption syndromes, diseases affecting the ileum (such as tuberculous ileitis or lymphoma), extensive surgical removal or bypass of the small bowel, and post-surgical changes following gastric reconstruction for obesity (bariatric surgery). Bacterial overgrowth in jejunal blind loops can also lead to deficiency as bacteria compete for cobalamin. Other intestinal disorders like Crohn's disease and conditions causing intestinal malabsorption are significant contributors.

Recognising the Signs: Symptoms of This Condition

Patients experiencing `Vitamin B12 deficiency anaemia due to intestinal disease` may present with a range of symptoms, often related to anaemia and neurological effects. Common signs include profound fatigue, a general lack of energy, and pallor. Neurological manifestations can manifest as numbness or tingling sensations in the hands and feet, difficulties with balance or walking, and cognitive disturbances such as confusion or memory problems. Gastrointestinal symptoms like a sore tongue or mouth ulcers may also occur.

Diagnostic Pathways for Vitamin B12 Deficiency Anaemia

Diagnosing `Vitamin B12 deficiency anaemia due to intestinal disease` typically involves a comprehensive evaluation. Healthcare providers will often order blood tests to assess red blood cell count and vitamin B12 levels. Specific diagnostic tests may include a complete blood count (CBC), a vitamin B12 assay, and tests for methylmalonic acid (MMA) and homocysteine, which can indicate B12 deficiency. Identifying the underlying intestinal cause is crucial for effective management.

Managing the Condition: Treatment and Support

Treatment for `Vitamin B12 deficiency anaemia due to intestinal disease` focuses on replenishing vitamin B12 levels and addressing the root intestinal cause where possible. This often involves vitamin B12 supplementation, which can be administered via oral medications, intramuscular injections, or nasal sprays. The specific treatment regimen and duration depend on the severity of the deficiency and the underlying intestinal condition. Long-term management may be necessary for individuals with chronic malabsorption issues.

Documentation and Coding Considerations

Accurate medical coding for this condition requires using the specific ICD-11 code `3A01.4`, which corresponds to `Vitamin B12 deficiency anaemia due to intestinal disease`. Documentation should clearly specify the intestinal origin of the vitamin B12 deficiency and any associated anaemia. This ensures precise billing and facilitates appropriate patient care pathways.

Frequently asked questions

What is the ICD-11 classification for Vitamin B12 deficiency anaemia due to intestinal disease?
3A01.4 is the ICD-11 classification for Vitamin B12 deficiency anaemia that arises due to intestinal disease.
How is Vitamin B12 deficiency anaemia due to intestinal disease coded in ICD-11?
The ICD-11 code 3A01.4 is used for Vitamin B12 deficiency anaemia due to intestinal disease. Post-coordination may be applied to specify the particular intestinal condition causing the deficiency.
What is the primary characteristic of the ICD-11 condition 3A01.4?
The primary characteristic of ICD-11 condition 3A01.4 is megaloblastic anaemia resulting from vitamin B12 deficiency, where the deficiency is attributed to an intestinal disease.
Under what circumstances is the unspecified category for Vitamin B12 deficiency anaemia due to intestinal disease used in ICD-11?
The unspecified category for Vitamin B12 deficiency anaemia due to intestinal disease in ICD-11 is used when the specific intestinal condition causing the deficiency is not documented or known.
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