G04.9
Non-billableEncephalitis, myelitis and encephalomyelitis, unspecified
Encephalitis, myelitis and encephalomyelitis, unspecified
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
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)
Child Codes (2)
Also Known As / Clinical Terms
Frequently Asked Questions
What is the ICD-10 code for encephalitis, myelitis and encephalomyelitis, unspecified?
The ICD-10-CM code for encephalitis, myelitis and encephalomyelitis, unspecified is G04.9. The full clinical description is "Encephalitis, myelitis and encephalomyelitis, unspecified". G04.9 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code G04.9 mean?
ICD-10-CM code G04.9 represents "Encephalitis, myelitis and encephalomyelitis, unspecified". It is classified under Chapter 6: Diseases of the Nervous System and is a non-billable header code. Use a more specific child code for billing purposes.
Is G04.9 a billable code?
No, G04.9 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 2 child codes under G04.9.
What chapter is G04.9 in?
G04.9 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G04.9?
G04.9 has Excludes1 notes indicating codes that cannot be used together with it, including: encephalopathy NOS (G93.40).
What are the subcategories under G04.9?
G04.9 has 2 child codes, including: G04.90 (Encephalitis and encephalomyelitis, unspecified), G04.91 (Myelitis, unspecified).
What are the UMLS CUIs for G04.9?
G04.9 is linked to 1 UMLS Concept Unique Identifier: C0014058. 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.