ICD-11 Codes
for 3A00.2 - Acquired iron deficiency anaemia due to decreased absorption

Teodor Jurukovski January 1, 1970

Fact checked by: Teodor Jurukovski

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Factors Contributing to Decreased Iron Absorption

Several gastrointestinal conditions and surgical procedures can significantly impair iron absorption. These include:

• Gastrectomies (surgical removal of part or all of the stomach)
• Malabsorption syndromes such as celiac disease
• Atrophic gastritis
• Infections like Helicobacter pylori
• Inflammatory bowel diseases, such as Crohn's disease, which can affect the small intestine where iron absorption primarily occurs.

Understanding Acquired Iron Deficiency Anaemia Due to Decreased Absorption

This condition, identified by the ICD-11 code 3A00.2, refers to a state where the body cannot absorb sufficient iron from the digestive tract. Iron is essential for producing haemoglobin, the protein in red blood cells that carries oxygen throughout the body. When iron absorption is impaired, the body's iron stores deplete, leading to iron deficiency anaemia. This is distinct from anaemia caused by insufficient intake or blood loss, focusing specifically on absorption issues.

Diagnosing Iron Deficiency Anaemia from Malabsorption

Diagnosing acquired iron deficiency anaemia due to decreased absorption involves a comprehensive evaluation. Initial steps typically include a complete blood count (CBC) to assess red blood cell parameters and iron studies (serum iron, ferritin, transferrin saturation) to confirm iron deficiency. To identify decreased absorption as the cause, healthcare providers will investigate potential underlying gastrointestinal conditions through medical history, physical examination, and possibly further investigations such as endoscopy, colonoscopy, or specific malabsorption tests. Ruling out other causes like blood loss or inadequate intake is crucial.

Coding and Documentation for ICD-11 Code 3A00.2

The ICD-11 code for acquired iron deficiency anaemia due to decreased absorption is 3A00.2. Accurate documentation is essential for correct billing and patient care. Clinicians should clearly record the diagnosis of iron deficiency anaemia and specify that it is due to decreased absorption. Identifying and documenting any underlying gastrointestinal conditions or contributing factors is also critical for comprehensive coding and treatment planning. This ICD-11 code is used for reporting health information and for billing purposes when applicable.

Recognising the Signs of Iron Deficiency Anaemia

Symptoms of iron deficiency anaemia, including that caused by decreased absorption, are often non-specific but can include:

• Fatigue and weakness
• Pale skin
• Shortness of breath or dizziness
• Headaches
• Irritability
• Cold hands and feet

Managing Iron Deficiency Anaemia from Decreased Absorption

Treatment for iron deficiency anaemia stemming from decreased absorption focuses on addressing the underlying cause and replenishing iron levels. This often involves:

• Oral iron supplementation, though its effectiveness may be limited if the malabsorption is severe.
• Intravenous (IV) iron infusions, which bypass the digestive system and are often more effective for significant absorption issues.
• Managing the underlying gastrointestinal condition (e.g., treating celiac disease, H. pylori infection, or inflammatory bowel disease).