P23.1

What This Code Means

A lung infection in a newborn caused by Chlamydia bacteria, typically acquired from the mother during vaginal delivery. This is a common cause of neonatal pneumonia.

Coding Tips

• •Chlamydia trachomatis is the most common organism in this category; document the specific species if available
• •Consider coding maternal chlamydia infection separately if the mother's condition is being treated during the same encounter