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Home/Diagnosis/ICD-10 Coding for Autoimmune Encephalopathy

ICD-10 Coding for Autoimmune Encephalopathy

G04.81
G93.40

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

Also Known as:
Autoimmune Encephalitis
Limbic Encephalitis
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Key Information: ICD-10 Coding for Autoimmune Encephalopathy

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

Use ICD-10 code G04.81 for other encephalitis and encephalomyelitis, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Other encephalitis and encephalomyelitis

Billable Code
G04.81
Billable

Diagnostic Criteria

clinical:
  • • Presence of subacute memory deficits and positive autoantibodies
documentation:
  • • MRI and CSF findings supporting autoimmune process

Applicable To

  • • Autoimmune encephalitis
  • • Limbic encephalitis

Important Notes

  • • Ensure documentation supports autoimmune etiology with specific clinical findings.

Encephalopathy, unspecified

Billable Code
G93.40
Billable

Diagnostic Criteria

clinical:
  • • Altered mental status without specific etiology

Important Notes

  • • Avoid using if specific etiology can be determined.
Ancillary Codes

Additional codes that may be used with this diagnosis

R56.9

Unspecified convulsions

Use to document seizures associated with autoimmune encephalitis.

Frequently Asked Questions

What is the ICD-10 code for autoimmune encephalopathy?

The ICD-10 code for autoimmune encephalopathy is G04.81, which covers other encephalitis and encephalomyelitis, including autoimmune types.

How is autoimmune encephalopathy diagnosed?

Autoimmune encephalopathy is diagnosed through clinical evaluation, MRI, CSF analysis, and autoantibody testing, confirming autoimmune etiology.

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