A50.41 ICD-10-CM Code: Late congenital syphilitic meningitis

A50.41 is the ICD-10-CM diagnosis code for late congenital syphilitic meningitis. This is a serious brain infection caused by syphilis that was passed from mother to child before birth and develops later in childhood or adulthood. The infection causes inflammation of the protective membranes surrounding the brain and spinal cord. A50.41 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering infections with a predominantly sexual mode of transmission (a50-a64).

A50.41 has no mapping under the current CMS-HCC V28 community payment model. A50.41 also appears in the HHS-HCC commercial risk model (HCC 003 (HHS-HCC 003 adult, RAF varies by metal level)), which is a commercial market model rather than a Medicare Advantage payment mapping. Do not assign V28 risk adjustment value from this page; verify the applicable model and payment year before using this code for risk adjustment.

This code is used only for late manifestations of congenital syphilis (typically after age 2 years); ensure documentation confirms the syphilis was acquired congenitally, not through other means.