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2025 ICD-10-CM code A74.81

Chlamydial peritonitis.

Use additional codes to specify any other related conditions (e.g., PID, infertility). Use Z16.- to identify resistance to antimicrobial drugs if applicable. Do not code suspected cases of Chlamydia infection; code only confirmed cases.

Medical necessity is established by the diagnosis of chlamydial peritonitis, confirmed by clinical findings and laboratory testing.Treatment is necessary to prevent serious complications such as pelvic inflammatory disease, infertility, and ectopic pregnancy in women, and to resolve the infection in men.

Diagnosis involves patient history, physical exam, blood and urine tests, and imaging (CT/MRI). Treatment includes antibiotics (doxycycline, azithromycin), and drainage of abdominal fluid if ascites is present. Patients should abstain from sexual activity during treatment.

In simple words: Chlamydial peritonitis is a rare infection that causes inflammation of the lining of your abdomen. It's caused by the same bacteria that cause the sexually transmitted infection chlamydia.

Chlamydial peritonitis is an inflammation of the peritoneum (the membrane lining the abdominal cavity) caused by the bacterium Chlamydia trachomatis.This infection is typically transmitted through sexual contact.

Example 1: A 25-year-old female presents with lower abdominal pain, fever, and vaginal discharge.Diagnostic testing confirms Chlamydia trachomatis infection and subsequent development of peritonitis., A 30-year-old male with a history of unprotected sex experiences pain and swelling in the testicles, later developing abdominal pain and diagnosed with chlamydial peritonitis., A pregnant woman with untreated chlamydia transmits the infection to her newborn during childbirth, leading to the development of chlamydial peritonitis in the infant.

Documentation should include signs and symptoms (abdominal pain, fever, discharge), sexual history, laboratory results confirming Chlamydia trachomatis infection (e.g., NAAT, culture), and imaging findings if applicable (CT, MRI).

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