Encounter for antenatal screening for Streptococcus B

This code signifies an encounter where a pregnant patient undergoes screening for Group B Streptococcus (GBS) during the antenatal period. GBS is a common bacterium that can be passed from mother to baby during childbirth, potentially causing serious infections in the newborn.

Apply this code when a pregnant patient presents for routine GBS screening, typically performed between 35 and 37 weeks of gestation. This includes encounters for obtaining the vaginal and rectal swab specimens for laboratory analysis.

• Do not use this code if the patient is being treated for an active GBS infection.
• This code is for screening encounters only, not for diagnostic workup of symptoms.
• Pair with a code indicating the patient's pregnancy status (e.g., from the O99 category).