A52.14 Late syphilitic encephalitis

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

MS-DRG index

Defines the logic of DRG(s) 023-024 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 094.81 Syphilitic encephalitis (approximate)

Code annotations containing back-references to A52.14

Back-references to A52.1

• Type 1 Excludes: G99.8 Other specified disorders of nervous system in diseases classified elsewhere ("syphilis (A52.1-)")

Back-references to A52

• Type 2 Excludes: N34 Urethritis and urethral syndrome ("urethritis in diseases with a predominantly sexual mode of transmission (A50-A64)")

Diagnosis Index entries for A52.14

• Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) › in (due to) › syphilis › late
• Meningoencephalitis › specific (syphilitic)
• Meningoencephalitis › syphilitic
• Meningomyelitis › syphilitic
• Myelitis (acute) (ascending) (childhood) (chronic) (descending) (diffuse) (disseminated) (idiopathic) (pressure) (progressive) (spinal cord) (subacute) › syphilitic (transverse)
• Syphilis, syphilitic (acquired) › meningoencephalitis

Nearby codes

• A52.1 Symptomatic neurosyphilis
• A52.10 Symptomatic neurosyphilis, unspecified
• A52.11 Tabes dorsalis
• A52.12 Other cerebrospinal syphilis
• A52.13 Late syphilitic meningitis
• A52.14 Late syphilitic encephalitis (this code)
• A52.15 Late syphilitic neuropathy
• A52.16 Charcot's arthropathy (tabetic)
• A52.17 General paresis
• A52.19 Other symptomatic neurosyphilis
• A52.2 Asymptomatic neurosyphilis