ICD-11 classes
05 Endocrine, nutritional or metabolic diseases
Nutritional disorders
Undernutrition

ICD-11 Undernutrition

Undernutrition is a condition in which the body’s requirements are unmet due to underconsumption or to impaired absorption and use of nutrients. It can be produced by lack of access to food, or as a consequence of illness. Undernutrition commonly refers to a deficit in energy intake, but can also refer to deficiencies of specific nutrients, and can be either acute or chronic.

Diagnosis contains 27 clarifying diagnoses:

1. 5B50 — Underweight in infants, children or adolescents
2. 5B51 — Wasting in infants, children or adolescents
3. 5B52 — Acute malnutrition in infants, children or adolescents
4. 5B53 — Stunting in infants, children or adolescents
5. 5B54 — Underweight in adults
6. 5B55 — Vitamin A deficiency
   It contains 9 clarifying diagnoses.
7. 5B56 — Vitamin C deficiency
   It contains 3 clarifying diagnoses.
8. 5B57 — Vitamin D deficiency
   It contains 4 clarifying diagnoses.
9. 5B58 — Vitamin E deficiency
   It contains 1 clarifying diagnosis.
10. 5B59 — Vitamin K deficiency
    It contains 1 clarifying diagnosis.
11. 5B5A — Vitamin B1 deficiency
    It contains 4 clarifying diagnoses.
12. 5B5B — Vitamin B2 deficiency
    It contains 1 clarifying diagnosis.
13. 5B5C — Vitamin B3 deficiency
    It contains 2 clarifying diagnoses.
14. 5B5D — Vitamin B6 deficiency
    It contains 1 clarifying diagnosis.
15. 5B5E — Folate deficiency
16. 5B5F — Vitamin B12 deficiency
    It contains 4 clarifying diagnoses.
17. 5B5G — Biotin deficiency
18. 5B5H — Pantothenic acid deficiency
19. 5B5J — Choline deficiency
20. 5B5K — Mineral deficiencies
    It contains 16 clarifying diagnoses.
21. Sequelae of malnutrition or certain specified nutritional deficiencies
    It contains 6 clarifying diagnoses.
22. 5B70 — Essential fatty acid deficiency
23. 5B71 — Protein deficiency
24. JA64 — Malnutrition in pregnancy
25. KA20.2 — Fetal intrauterine malnutrition without mention of small for gestational age
26. 5B7Y — Other specified undernutrition
27. 5B7Z — Unspecified undernutrition