Other chlamydial diseases

This code represents chlamydial infections affecting various organ systems that are not specifically classified elsewhere. It encompasses systemic or localized chlamydial manifestations beyond common genitourinary, ocular, or respiratory presentations. This includes conditions like chlamydial peritonitis, arthritis, or hepatitis when definitively linked to Chlamydia species.

Use this code when documentation specifies a chlamydial infection in an anatomical site not covered by more specific ICD-10-CM codes (e.g., A74.0-A74.81). This would apply to scenarios such as a positive Chlamydia culture or PCR from a joint aspirate in a patient with reactive arthritis, or chlamydial involvement of the liver. The medical record must clearly state the chlamydial etiology and the affected body system.

• Ensure the documentation explicitly states "chlamydial" and specifies an affected body system not covered by more granular codes.
• Avoid using this code if a more specific chlamydial infection code (e.g., A74.0 for conjunctivitis, A74.1 for peritonitis) is available.
• Always sequence this code after the primary manifestation if the chlamydial disease is secondary to another condition, or as the primary diagnosis if it is the reason for the encounter.