Carrier of Group B streptococcus

This code identifies an individual who harbors Group B Streptococcus (GBS) bacteria without exhibiting active symptoms or infection. These individuals are considered carriers and can potentially transmit the bacteria to others, particularly neonates during childbirth. GBS colonization is common and often asymptomatic.

Assign this code when documentation indicates a patient is a known carrier of GBS, typically identified through screening cultures (e.g., vaginal/rectal swabs). This applies to non-pregnant individuals or pregnant individuals where the GBS carrier status is not directly complicating the current pregnancy, childbirth, or puerperium.

• Do not use this code if the GBS carrier status is complicating pregnancy, childbirth, or the puerperium; refer to the O99.82- series.
• This code is for carrier status only; if there is an active GBS infection, a more specific infection code should be used.
• Consider any associated screening or prophylactic treatment codes if applicable.