What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).
When is it used?
- May be used when a clinician documents toxic encephalopathy in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
6Diseases of the nervous system (G00-G99)
block
G89-G99Other disorders of the nervous system
currentG89-G99
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
NeurologistGeneral Physician
Sibling codes
G89Pain, not elsewhere classifiedG90Disorders of autonomic nervous systemG91HydrocephalusG93Other disorders of brainG94Other disorders of brain in diseases classified elsewherebillableG95Other and unspecified diseases of spinal cordG96Other disorders of central nervous systemG97Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classifiedG98Other disorders of nervous system not elsewhere classifiedG99Other disorders of nervous system in diseases classified elsewhere
Mapped diagnoses and classifications
SNOMED_CT 788916009high
Ammonia encephalopathy
Source: SNOMED International ICD-10 map
SNOMED_CT 9345005high
Dialysis dementia
Source: SNOMED International ICD-10 map
SNOMED_CT 230354009high
Drug-induced encephalopathy
Source: SNOMED International ICD-10 map
SNOMED_CT 230355005high
Encephalopathy caused by heavy metal
Source: SNOMED International ICD-10 map
SNOMED_CT 1204463009high
Encephalopathy with sepsis
Source: SNOMED International ICD-10 map
SNOMED_CT 425522009high
Hyperammonemic encephalopathy
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
G92
Replacement codes
G92.8 — Other toxic encephalopathyG92.9 — Unspecified toxic encephalopathy
Common synonyms
Toxic encephalopathy
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.