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ICD-10-CM Codes
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G00-G99
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G89-G99
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G94-
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2023 ICD-10-CM Diagnosis Code G94
2023 ICD-10-CM Diagnosis Code G94
Other disorders of brain in diseases classified elsewhere
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Manifestation Code
- G94 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2023 edition of ICD-10-CM G94 became effective on October 1, 2022.
- This is the American ICD-10-CM version of G94 - other international versions of ICD-10 G94 may differ.
ICD-10-CM Coding Rules
- G94 describes the manifestation of an underlying disease, not the disease itself.
Code FirstCode First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
Type 1 ExcludesType 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as G94. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- encephalopathy in congenital syphilis (
ICD-10-CM Diagnosis Code A50.49
Other late congenital neurosyphilis
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
- encephalopathy in influenza (
ICD-10-CM Diagnosis Code J09.X9
Influenza due to identified novel influenza A virus with other manifestations
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Influenza due to identified novel influenza A virus with encephalopathy
- Influenza due to identified novel influenza A virus with myocarditis
- Influenza due to identified novel influenza A virus with otitis media
Use Additional- code to identify manifestation
ICD-10-CM Diagnosis Code J10.81
Influenza due to other identified influenza virus with encephalopathy
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
ICD-10-CM Diagnosis Code J11.81
Influenza due to unidentified influenza virus with encephalopathy
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
Applicable To- Influenzal encephalopathy NOS
- encephalopathy in syphilis (
ICD-10-CM Diagnosis Code A52.19
Other symptomatic neurosyphilis
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
- hydrocephalus in diseases classified elsewhere (
ICD-10-CM Diagnosis Code G91.4
Hydrocephalus in diseases classified elsewhere
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Manifestation Code
Code First- underlying condition, such as:
- congenital syphilis (A50.4-)
- neoplasm (C00-D49)
- plasminogen deficiency (E88.02)
Type 1 Excludes- hydrocephalus due to congenital toxoplasmosis (P37.1)
The following code(s) above
G94 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
G94:
- Cerebral hydatid cyst
- Hydatid cyst of brain
- Plasmodium falciparum malaria with cerebral complications
- Plasmodium falciparum malaria, cerebral complication
ICD-10-CM G94 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
- 056 Degenerative nervous system disorders with mcc
- 057 Degenerative nervous system disorders without mcc
Convert G94 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
Code annotations containing back-references to G94:
ICD-10-CM Codes Adjacent To G94
G93.41 Metabolic encephalopathy
G93.5 Compression of brain
G93.8 Other specified disorders of brain
G93.89 Other specified disorders of brain
G93.9 Disorder of brain, unspecified
G94
Other disorders of brain in diseases classified elsewhere
G95 Other and unspecified diseases of spinal cord
G95.0 Syringomyelia and syringobulbia
G95.1 Vascular myelopathies
G95.11 Acute infarction of spinal cord (embolic) (nonembolic)
G95.19 Other vascular myelopathies
G95.2 Other and unspecified cord compression
G95.20 Unspecified cord compression
G95.8 Other specified diseases of spinal cord
G95.81 Conus medullaris syndrome
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
