Neonatal (disseminated) listeriosis

This code represents a severe, systemic bacterial infection caused by Listeria monocytogenes occurring in a newborn. It signifies a widespread infection affecting multiple organs, often acquired transplacentally or during birth. This condition carries significant morbidity and mortality for neonates.

Apply this code for documented cases of listeriosis in a neonate where the infection has disseminated throughout the body. This typically involves positive cultures from multiple sites (e.g., blood, CSF) or clinical evidence of multi-organ involvement. Documentation should clearly state "disseminated listeriosis" or provide sufficient detail to indicate systemic spread.

• Ensure documentation specifies "neonatal" or "newborn" to differentiate from adult listeriosis.
• Confirm the infection is disseminated; localized listeriosis would require a different code.
• Consider sequencing this code as the principal diagnosis if it is the primary reason for admission.