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D53.0 Protein Deficiency Anaemia – ICD-10 Code
D53.0 is the ICD-10 code for protein deficiency anaemia – a type of anaemia caused by insufficient protein intake or impaired protein metabolism.
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D53.0 is the ICD-10 code for protein deficiency anaemia – a type of anaemia caused by insufficient protein intake or impaired protein metabolism.
What is D53.0?
The ICD-10 code D53.0 refers to protein deficiency anaemia, also known as nutritional protein deficiency anaemia. This condition occurs when the body does not have enough protein to produce adequate numbers of red blood cells and sufficient haemoglobin. D53.0 falls under the broader ICD-10 category D53 – Other nutritional anaemias.
Causes
Protein deficiency anaemia can develop for several reasons:
- Inadequate protein intake: Malnutrition, highly restrictive diets, or severe caloric deficiency
- Malabsorption: Conditions such as Crohn's disease, coeliac disease, or short bowel syndrome that impair nutrient absorption
- Excessive protein loss: For example, in nephrotic syndrome (protein loss via the kidneys) or severe burns
- Chronic diseases: Liver or kidney disease that impairs protein metabolism
- Kwashiorkor: A severe form of protein malnutrition most commonly seen in low-income countries
Symptoms
The symptoms of protein deficiency anaemia overlap with general signs of anaemia and protein deficiency:
- Fatigue, weakness, and reduced physical performance
- Pale skin and mucous membranes
- Shortness of breath and rapid heartbeat during exertion
- Oedema (fluid retention), particularly in the legs and abdomen
- Muscle wasting and unintentional weight loss
- Difficulty concentrating and cognitive impairment
- Brittle nails and hair loss
Diagnosis
The diagnosis of D53.0 is established through clinical assessment and laboratory tests:
- Full blood count: Reveals anaemia (reduced haemoglobin levels, altered haematocrit)
- Serum protein and albumin: Low levels indicate protein deficiency
- Prealbumin and transferrin: Sensitive markers of nutritional status
- Reticulocyte count: Assesses bone marrow activity in red blood cell production
- Dietary history: Evaluation of eating habits and protein intake
- Exclusion of other anaemia types: Such as iron deficiency (D50), vitamin B12 deficiency (D51), or folate deficiency (D52)
Treatment
Treatment is directed at the underlying cause of the protein deficiency:
- Dietary optimisation: Increasing protein intake through protein-rich foods such as meat, fish, legumes, dairy products, and eggs
- Nutritional counselling: Individualised guidance from a dietitian or nutritional medicine specialist
- High-calorie oral nutritional supplements: Sip feeds or specialised nutritional products for patients with severe deficiency or swallowing difficulties
- Treatment of the underlying condition: For example, managing malabsorption or nephrotic syndrome
- Parenteral nutrition: In severe cases where oral intake is not possible, protein can be administered intravenously
Clinical Relevance and Coding
The ICD-10 code D53.0 is used in medical documentation and billing when anaemia is attributed to protein deficiency. It must be distinguished from other forms of anaemia, including iron deficiency anaemia (D50), vitamin B12 deficiency anaemia (D51), and folate deficiency anaemia (D52). Accurate coding is essential for quality assurance, healthcare reimbursement (DRG systems), and the epidemiological monitoring of nutritional deficiencies.
References
- World Health Organization (WHO): Nutritional anaemias – tools for effective prevention and control. Geneva: WHO Press, 2017.
- Kasper, D.L. et al.: Harrison's Principles of Internal Medicine, 21st Edition. McGraw-Hill Education, 2022, Chapter: Anaemia and Polycythaemia.
- World Health Organization (WHO): ICD-10 – International Statistical Classification of Diseases and Related Health Problems, 10th Revision, Volume 1. Geneva: WHO, 2019. Category D53.0.
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