In simple words: This code is used when a mother has a sexually transmitted infection (STI) that causes problems during pregnancy, childbirth, or the time right after giving birth. This is for STIs that aren't specifically listed as tuberculosis, syphilis, or gonorrhea.

This code classifies infections primarily transmitted through sexual contact that complicate pregnancy, childbirth, or the postpartum period.These infections are not otherwise specified and may include various sexually transmitted infections (STIs) not individually coded under O98.0-O98.2 (Tuberculosis, Syphilis, and Gonorrhea respectively).The infection must directly impact the pregnancy, childbirth, or postpartum period; otherwise, another code should be used. The code excludes conditions like obstetrical tetanus (A34), puerperal infection (O86.-), and puerperal sepsis (O85) unless the maternal care is due to suspected fetal involvement (O35-O36).

Example 1: A pregnant woman is diagnosed with chlamydia, which leads to premature rupture of membranes and preterm delivery. Code O98.3 is used to capture the chlamydia infection complicating the pregnancy., A postpartum woman develops pelvic inflammatory disease (PID) likely due to an untreated STI. Code O98.3 is used to reflect the STI-related complication in the postpartum period., During routine prenatal care, a pregnant patient tests positive for Trichomoniasis, although she is asymptomatic. Given the potential for adverse pregnancy outcomes, O98.3 is used for documentation.

* Positive laboratory test results confirming the STI.* Documentation of the STI's impact on the pregnancy, childbirth, or puerperium.* Clinical notes detailing any complications, treatment, and outcomes.

** This code is primarily for infections not individually specified within the O98 range.Always ensure proper documentation supporting the diagnosis and link to the obstetric event.