Infect of prt urinary tract in pregnancy, second trimester

This code signifies a urinary tract infection (UTI) affecting areas other than the bladder (e.g., kidney, ureter) occurring during the second trimester of pregnancy. This includes conditions like pyelonephritis or ureteritis when a pregnant patient is between 14 weeks 0 days and 27 weeks 6 days gestation.

Apply this code when documentation clearly indicates an infection of the upper urinary tract (e.g., pyelonephritis, renal abscess) in a pregnant patient. The medical record must specify that the pregnancy is in the second trimester. Supporting documentation includes urinalysis results, urine culture, and physician notes detailing the location of the infection and gestational age.

• Always sequence this code after the code for the specific infection (e.g., N10 for acute pyelonephritis).
• Confirm the trimester of pregnancy is explicitly documented; do not assume based on estimated due date alone.
• Distinguish from O23.0- (infections of kidney in pregnancy) or O23.1- (infections of bladder in pregnancy) if the infection is specifically identified as pyelonephritis or cystitis, respectively.