ICD-10 Code A50.42

Late congenital syphilitic encephalitis

Version 2019 Billable Code
ICD-10: A50.42
Short Description:Late congenital syphilitic encephalitis
Long Description:Late congenital syphilitic encephalitis

Valid for Submission

ICD-10 A50.42 is a billable code used to specify a medical diagnosis of late congenital syphilitic encephalitis. The code is valid for the year 2019 for the submission of HIPAA-covered transactions.

Code Classification

  • Certain infectious and parasitic diseases (A00–B99)
    • Infections with a predominantly sexual mode of transmission (A50-A64)
      • Congenital syphilis (A50)

Information for Medical Professionals

Convert A50.42 to ICD-9

The following crosswalk between ICD-10 to ICD-9 is based based on the General Equivalence Mappings (GEMS) information:

  • 090.41 - Congen syph encephalitis (Approximate Flag)

Synonyms

The following clinical terms are approximate synonyms:

  • Congenital syphilitic encephalitis

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code A50.42 are found in the index:


Information for Patients


Encephalitis

Encephalitis is an inflammation of the brain. Usually the cause is a viral infection, but bacteria can also cause it. It can be mild or severe. Most cases are mild. You may have flu-like symptoms. With a mild case, you may just need rest, plenty of fluids, and a pain reliever.

Severe cases need immediate treatment. Symptoms of severe cases include

  • Severe headache
  • Sudden fever
  • Drowsiness
  • Vomiting
  • Confusion
  • Seizures

In babies, additional symptoms may include constant crying, poor feeding, body stiffness, and bulging in the soft spots of the skull.

Severe cases may require a stay in the hospital. Treatments include oral and intravenous (IV) medicines to reduce inflammation and treat infection. Patients with breathing difficulties may need artificial respiration. Some people may need physical, speech, and occupational therapy once the illness is under control.

NIH: National Institute of Neurological Disorders and Stroke

  • Cerebral spinal fluid (CSF) collection (Medical Encyclopedia)
  • CSF analysis (Medical Encyclopedia)
  • Encephalitis (Medical Encyclopedia)
  • Japanese Encephalitis Vaccine: What You Need to Know (Centers for Disease Control and Prevention)
  • Subacute sclerosing panencephalitis (Medical Encyclopedia)

[Learn More]

Syphilis

Syphilis is a sexually transmitted disease caused by bacteria. It infects the genital area, lips, mouth, or anus of both men and women. You usually get syphilis from sexual contact with someone who has it. It can also pass from mother to baby during pregnancy.

The early stage of syphilis usually causes a single, small, painless sore. Sometimes it causes swelling in nearby lymph nodes. If you do not treat it, syphilis usually causes a non-itchy skin rash, often on your hands and feet. Many people do not notice symptoms for years. Symptoms can go away and come back.

The sores caused by syphilis make it easier to get or give someone HIV during sex. If you are pregnant, syphilis can cause complications, or you could lose your baby. In rare cases, syphilis causes serious health problems and even death.

Syphilis is easy to cure with antibiotics if you catch it early. Correct usage of latex condoms greatly reduces, but does not completely eliminate, the risk of catching or spreading syphilis. The most reliable way to avoid infection is to not have anal, vaginal, or oral sex.

Centers for Disease Control and Prevention

  • Condom Fact Sheet in Brief (Centers for Disease Control and Prevention)
  • Congenital syphilis (Medical Encyclopedia)
  • CSF-VDRL test (Medical Encyclopedia)
  • FTA-ABS test (Medical Encyclopedia)
  • Neurosyphilis (Medical Encyclopedia)
  • RPR test (Medical Encyclopedia)
  • Syphilis (Centers for Disease Control and Prevention)
  • Syphilis - primary (Medical Encyclopedia)
  • Syphilis and MSM (Men Who Have Sex with Men) (Centers for Disease Control and Prevention)
  • VDRL test (Medical Encyclopedia)

[Learn More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.