Transitory tyrosinaemia of newbornICD-11 Subcategory
ICD-11 code : KB63.4;
Preferred Label : Transitory tyrosinaemia of newborn;
ICD-11 definition : Clinically asymptomatic elevated blood tyrosine level caused by late fetal maturation
of 4-hydroxyphenylpyruvate dioxygenase, usually detected on newborn bloodspot screening.
Most commonly seen in premature infants receiving milk formulae with high protein
content. Generally considered benign and resolves by 4-6 weeks of age.;
Clinically asymptomatic elevated blood tyrosine level caused by late fetal maturation
of 4-hydroxyphenylpyruvate dioxygenase, usually detected on newborn bloodspot screening.
Most commonly seen in premature infants receiving milk formulae with high protein
content. Generally considered benign and resolves by 4-6 weeks of age.
Currated CISMeF NLP mapping