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2025 ICD-10-CM code A50.59

Other symptomatic late congenital syphilis. This condition manifests after two years of age with various symptoms depending on the affected organ.

Use additional code to identify resistance to antimicrobial drugs (Z16.-)

Medical necessity for services related to A50.59 is established by the diagnosis of late congenital syphilis and the need for treatment and management of its manifestations.

Providers diagnose the disease based on physical exam, serological testing, X-rays and/or MRI, and other tests as indicated by the manifestation. Providers treat syphilis with injections of the antibiotic penicillin.

In simple words: This code represents a form of syphilis that is present at birth and shows symptoms after the age of two.A pregnant woman infected with syphilis can transmit the disease to her unborn child.Symptoms vary based on which organs are affected.Testing for congenital syphilis often includes a physical exam, blood tests, X-rays, and sometimes an MRI.

Other symptomatic late congenital syphilis refers to forms of congenital syphilis in which symptoms typically present at 2 years after birth or later. Syphilis is a sexually transmitted disease (STD) that results from infection with the bacterium Treponema pallidum; an infected mother can pass the infection to her baby in the womb or during delivery. This code identifies a type of symptomatic late congenital syphilis not represented by another code.

Example 1: A 5-year-old child presents with hearing loss, Hutchinson's teeth, and interstitial keratitis. Serological tests confirm congenital syphilis., A 3-year-old child exhibits bone deformities, including saddle nose and saber shins, and has a history of parental syphilis., A 6-year-old child presents with neurological symptoms, including cognitive impairment, and tests positive for congenital syphilis.

Documentation should include the type of late congenital syphilis, the specific symptoms present, serological test results, imaging findings (X-rays, MRI), and treatment plan.

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