G04.90
BillableEncephalitis and encephalomyelitis, unspecified
Encephalitis and encephalomyelitis, unspecified
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Ventriculitis (cerebral) NOS
Includes
Conditions included under this code
- acute ascending myelitis
- meningoencephalitis
- meningomyelitis
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- encephalopathy NOS (G93.40)
Excludes 2
Conditions not included here, but the patient may have both
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- acute transverse myelitis (G37.3)
- alcoholic encephalopathy (G31.2)
- multiple sclerosis (G35)
- myalgic encephalomyelitis (G93.32)
- subacute necrotizing myelitis (G37.4)
- toxic encephalitis (G92.8)
- toxic encephalopathy (G92.8)
Also Known As / Clinical Terms
SNOMED CT
- Meningoencephalitis7125002
- Meningoencephalomyelitis29197009
- Granular ependymitis33346005
- Encephalitis45170000
- Encephalomyelitis62950007
- Ependymitis71981002
- Meningomyelitis74772000
- Infectious disease of brain128614008
- Bacterial ventriculitis230158001
- Bacterial ventriculitis, brain230158001
- Malignant ventriculitis230160004
- Malignant ventriculitis, brain230160004
- Focal encephalitis230189002
- Brainstem encephalitis230190006
- Situation-related seizures230431001
- Encephalitis, myelitis and encephalomyelitis267576008
- Infective encephalitis312215006
- Infective ventriculitis312217003
- Infective ventriculitis, brain312217003
- Seizures complicating infection371115001
- Primary encephalitis406573001
- Infection caused by Mycoplasma pneumoniae406595002
- Bacterial myelitis721245001
- Myelitis caused by bacterium721245001
- Infection causing encephalomyelitis721249007
- Infectious encephalomyelitis721249007
- Epilepsy due to infectious disease of central nervous system724549005
- Encephalitis caused by Mycoplasma pneumoniae764993001
- Mycoplasma pneumoniae encephalitis764993001
- Burkholderia encephalomyelitis838315004
- Encephalomyelitis caused by Burkholderia838315004
- Epilepsy due to infectious encephalitis860804005
- Infectious encephalitis epilepsy860804005
- Bacterial encephalomyelitis860841006
- Encephalomyelitis caused by bacterium860841006
- Chorea due to and following encephalitis1163149009
- Post-encephalitic chorea1163149009
- Autonomic disorder due to encephalitis1259060008
- Disorder of autonomic nervous system due to encephalitis1259060008
- Dystonia due to encephalitis1260343000
- Acute encephalitis822021000000103
- Ventriculitis of the brain89441000119109
Frequently Asked Questions
What is the ICD-10 code for encephalitis and encephalomyelitis, unspecified?
The ICD-10-CM code for encephalitis and encephalomyelitis, unspecified is G04.90. The full clinical description is "Encephalitis and encephalomyelitis, unspecified". G04.90 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code G04.90 mean?
ICD-10-CM code G04.90 represents "Encephalitis and encephalomyelitis, unspecified". It is classified under Chapter 6: Diseases of the Nervous System and is a billable/specific code that can be used on a claim.
Is G04.90 a billable code?
Yes, G04.90 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is G04.90 in?
G04.90 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G04.90?
G04.90 has Excludes1 notes indicating codes that cannot be used together with it, including: encephalopathy NOS (G93.40).
What SNOMED CT codes does G04.90 map to?
G04.90 maps to 31 SNOMED CT concepts: 822021000000103, 1259060008, 860841006, 721245001, 230158001, and 26 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for G04.90?
G04.90 is linked to 2 UMLS Concept Unique Identifiers: C1455718, C2875025. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.