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Home/Diagnosis/ICD-10 Coding for Acute Encephalopathy

ICD-10 Coding for Acute Encephalopathy

G93.40
G93.41
G92.8

Complete ICD-10-CM coding and documentation guide for icd-10 coding for acute encephalopathy includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Encephalopathy, unspecified
Metabolic Encephalopathy
Toxic Encephalopathy
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Key Information: ICD-10 Coding for Acute Encephalopathy

Essential facts and insights about ICD-10 Coding for Acute Encephalopathy

Use ICD-10 code G93.40 for encephalopathy, unspecified, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Encephalopathy, unspecified

Billable Code
G93.40
Billable

Diagnostic Criteria

documentation_criteria:
  • • Lack of specific type or cause of encephalopathy
applicable_to:
  • • Acute encephalopathy without further specification
excludes:
  • • Delirium (R41.0)
validation:
  • • Documented altered mental status
  • • No specific cause identified
notes:
  • • Ensure documentation supports the absence of a more specific encephalopathy type.
risks:
  • • Risk of under-coding if specific type is known but not documented

Metabolic encephalopathy

Billable Code
G93.41
Billable

Diagnostic Criteria

applicable_to:
  • • Septic encephalopathy
  • • Uremic encephalopathy
excludes:
  • • Toxic encephalopathy (G92.8)
validation:
  • • Metabolic derangement documented
  • • Supporting labs such as elevated ammonia or abnormal ABG
notes:
  • • Ensure metabolic cause is documented and supported by lab results.

Toxic encephalopathy

Billable Code
G92.8
Billable

Diagnostic Criteria

applicable_to:
  • • Encephalopathy due to toxins
excludes:
  • • Metabolic encephalopathy (G93.41)
validation:
  • • Toxicology screen positive
  • • Drug level above therapeutic range
notes:
  • • Ensure toxic cause is documented and confirmed by lab results.
Ancillary Codes

Additional codes that may be used with this diagnosis

R65.2

Severe sepsis

Use with G93.41 if sepsis is the underlying cause.

T43.595A

Adverse effect of lithium

Use with G92.8 if lithium toxicity is confirmed.

Frequently Asked Questions

What is the ICD-10 code for acute encephalopathy?

The ICD-10 code for unspecified acute encephalopathy is G93.40. For metabolic encephalopathy, use G93.41, and for toxic encephalopathy, use G92.8.

Can you code both toxic and metabolic encephalopathy?

Yes, since 2021, both toxic (G92.8) and metabolic (G93.41) encephalopathy can be coded together if documented.

How should encephalopathy due to sepsis be coded?

Code metabolic encephalopathy due to sepsis as G93.41, with additional codes for sepsis if applicable.

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