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v1.0.0
ICD-10 Guide
ICD-10 CodesG93.40

G93.40

Billable

Encephalopathy, unspecified

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 G93.40 is a billable code used to indicate a diagnosis of encephalopathy, unspecified.

Key Diagnostic Point:

Encephalopathy refers to a broad category of brain disorders that alter brain function or structure. The term 'unspecified' indicates that the specific cause of the encephalopathy is not identified. This condition can manifest through various symptoms, including cognitive dysfunction, altered consciousness, seizures, and motor disturbances. Encephalopathy can arise from numerous etiologies, including metabolic disturbances, infections, toxic exposures, and hypoxic events. It may also be associated with pain syndromes, where patients experience chronic pain due to neurological dysfunction. Autonomic disorders may present alongside encephalopathy, leading to dysregulation of autonomic functions such as heart rate and blood pressure. Hydrocephalus, characterized by an accumulation of cerebrospinal fluid, can also contribute to encephalopathy by increasing intracranial pressure and affecting brain function. Accurate diagnosis and management are crucial, as the underlying causes can vary widely, necessitating a tailored approach to treatment.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of potential underlying causes
  • Overlap with other neurological conditions
  • Need for comprehensive clinical documentation
  • Potential for misdiagnosis without thorough evaluation

Audit Risk Factors

  • Inadequate documentation of symptoms
  • Failure to specify underlying causes
  • Misalignment between diagnosis and treatment provided
  • Lack of follow-up documentation

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, history of present illness, and any imaging or lab results.

Common Clinical Scenarios

Patients presenting with confusion, altered mental status, or seizures without a clear etiology.

Billing Considerations

Ensure that all potential causes are explored and documented to support the unspecified diagnosis.

Internal Medicine

Documentation Requirements

Comprehensive medical history, review of systems, and any relevant laboratory tests.

Common Clinical Scenarios

Patients with metabolic disturbances leading to altered mental status.

Billing Considerations

Document any metabolic panels or imaging studies that may indicate the underlying cause.

Coding Guidelines

Inclusion Criteria

Use G93.40 When
  • According to ICD
  • 10 guidelines, G93
  • 40 should be used when the specific cause of encephalopathy is not documented
  • Coders should ensure that all relevant clinical information is captured to justify the use of this unspecified code

Exclusion Criteria

Do NOT use G93.40 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99214CPT Code

Established patient office visit, level 4

Clinical Scenario

Used for follow-up visits for patients diagnosed with encephalopathy.

Documentation Requirements

Document history, examination findings, and medical decision-making.

Specialty Considerations

Ensure that the visit correlates with the complexity of the patient's condition.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specificity in coding neurological conditions. G93.40 serves as a catch-all for cases where the cause of encephalopathy is not clear, but it emphasizes the need for thorough documentation to support the diagnosis.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specificity in coding neurological conditions. G93.40 serves as a catch-all for cases where the cause of encephalopathy is not clear, but it emphasizes the need for thorough documentation to support the diagnosis.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specificity in coding neurological conditions. G93.40 serves as a catch-all for cases where the cause of encephalopathy is not clear, but it emphasizes the need for thorough documentation to support the diagnosis.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What should I document to support the use of G93.40?

Document all clinical findings, history of present illness, and any tests performed that rule out other causes of encephalopathy. Ensure that the symptoms align with the diagnosis.