A52.14 ICD-10-CM Code: Late syphilitic encephalitis

A52.14 is the ICD-10-CM diagnosis code for late syphilitic encephalitis. This is a serious brain infection caused by syphilis that develops years after the initial infection. It occurs when untreated syphilis progresses to affect the brain and nervous system, potentially causing inflammation and neurological damage. A52.14 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).

A52.14 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

This code is used for late-stage neurosyphilis; ensure documentation confirms the patient has late syphilis (typically occurring 2+ years after initial infection) with specific encephalitis involvement.