Diagnosis Code G04.81
Information for Medical Professionals
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.
- 323.81 - Enceph & encephlalo NEC (approximate) 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.
- Allergic encephalitis
- Allergic encephalitis
- Allergic encephalomyelitis
- Autoimmune encephalitis
- Bickerstaff's brainstem encephalitis
- Brainstem encephalitis
- Encephalitis caused by Herpesvirus
- Experimental allergic encephalomyelitis
- Focal encephalitis
- Granulomatous meningoencephalomyelitis
- Infectious mononucleosis
- Infectious mononucleosis encephalitis
- Limbic encephalitis
- Pyogranulomatous meningoencephalomyelitis
- Rasmussen syndrome
- Rasmussen syndrome, refractory
Index of Diseases and Injuries
References found for the code G04.81 in the Index of Diseases and Injuries:
- Inclusion Terms: Inclusion terms
List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Noninfectious acute disseminated encephalomyelitis (noninfectious ADEM)
Information for Patients
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
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)