The ICD 11 Code 03 is a WHO Classified code for Diseases of the blood or blood-forming organs
Definition: This chapter includes diseases of the blood as well as diseases of blood forming organs.
Exclusion:
Complications of pregnancy, childbirth and the puerperium
Diseases of the immune system
Certain conditions originating in the perinatal period
Injury, poisoning or certain other consequences of external causes
Human immunodeficiency virus disease
Endocrine, nutritional or metabolic diseases
Congenital malformations, deformations and chromosomal abnormalities