ICD-11 classes
05 Endocrine, nutritional or metabolic diseases
Nutritional disorders
Undernutrition
5B5B — Vitamin B2 deficiency

ICD-11 5B5B — Vitamin B2 deficiency

The signs of riboflavin deficiency are sore throat, hyperaemia, oedema of the pharyngeal and oral mucous membranes, cheilosis, angular stomatitis, glossitis, seborrheic dermatitis, and normochromic normocytic anaemia associated with pure red cell cytoplasia of the bone marrow. The major cause of hyporiboflavinosis is inadequate dietary intake as a result of limited food supply, which is sometimes exacerbated by poor food storage or processing. Children in developing countries will commonly demonstrate clinical signs of riboflavin deficiency during periods of the year when gastrointestinal infections are prevalent. Decreased assimilation of riboflavin also results from abnormal digestion, such as that which occurs with lactose intolerance.

The diagnosis excludes nothing.

Diagnosis with code 5B5B contains 1 clarifying diagnosis:

1. 3A03.41 — Acquired riboflavin deficiency anaemia

The diagnosis is coded elsewhere:

• Disorders of vitamins or their metabolism which may affect the skin #15919