Syphilis complicating pregnancy, unspecified trimester

This code signifies a diagnosis of syphilis in a pregnant patient, where the specific trimester of the pregnancy is not documented. It indicates an active or latent syphilitic infection that is present during the gestational period, regardless of the stage of syphilis.

Use this code when the medical record confirms a diagnosis of syphilis in a pregnant patient, but the documentation does not specify the trimester. This applies to situations where the provider has noted "syphilis in pregnancy" without further detail regarding the timing within the pregnancy.

• Always attempt to clarify the trimester from the provider if possible to allow for more specific coding.
• Do not use this code if the trimester is known; instead, select the appropriate trimester-specific code (O98.111, O98.112, O98.113).
• Code also the specific stage of syphilis (e.g., A51.0-A53.9) to provide a complete clinical picture.