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ICD-10 Guide
ICD-10 CodesG93.1

G93.1

Billable

Anoxic brain damage, not elsewhere classified

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

Code Description

ICD-10 G93.1 is a billable code used to indicate a diagnosis of anoxic brain damage, not elsewhere classified.

Key Diagnostic Point:

Anoxic brain damage refers to injury to the brain caused by a lack of oxygen, which can occur due to various factors such as cardiac arrest, drowning, or severe respiratory failure. This condition can lead to a range of neurological deficits, including cognitive impairment, motor dysfunction, and sensory disturbances. Patients may experience pain syndromes, such as neuropathic pain, due to nerve damage. Autonomic disorders may also arise, affecting heart rate, blood pressure, and temperature regulation. Hydrocephalus, characterized by an accumulation of cerebrospinal fluid, can develop as a secondary complication, leading to increased intracranial pressure and further neurological decline. Other nervous system disorders may include seizures, spasticity, and changes in consciousness. The clinical presentation can vary widely depending on the duration and severity of the anoxic event, making diagnosis and management complex.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Varied clinical presentations and symptoms
  • Potential for multiple co-existing conditions
  • Need for comprehensive documentation to support diagnosis
  • Differentiation from other neurological disorders

Audit Risk Factors

  • Inadequate documentation of the anoxic event
  • Failure to specify the severity of brain damage
  • Misclassification with other neurological disorders
  • Lack of supporting evidence for co-morbid conditions

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, imaging results, and treatment plans.

Common Clinical Scenarios

Patients presenting with altered mental status, seizures, or motor deficits following an anoxic event.

Billing Considerations

Ensure documentation reflects the extent of brain damage and any associated complications.

Emergency Medicine

Documentation Requirements

Immediate assessment findings, interventions performed, and patient response.

Common Clinical Scenarios

Patients arriving post-cardiac arrest or near-drowning incidents.

Billing Considerations

Document the timeline of events leading to anoxia and any resuscitation efforts.

Coding Guidelines

Inclusion Criteria

Use G93.1 When
  • According to ICD
  • 10 guidelines, G93
  • 1 should be used when anoxic brain damage is confirmed and not classified elsewhere
  • Coders must ensure that the documentation supports the diagnosis and that other potential causes of brain damage are ruled out

Exclusion Criteria

Do NOT use G93.1 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99223CPT Code

Initial hospital care, typically 70 minutes or more.

Clinical Scenario

Used for patients admitted with anoxic brain damage requiring extensive evaluation.

Documentation Requirements

Comprehensive history, examination, and medical decision-making.

Specialty Considerations

Neurology specialists should ensure detailed documentation of neurological assessments.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of anoxic brain damage, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of outcomes and complications associated with this condition.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of anoxic brain damage, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of outcomes and complications associated with this condition.

Reimbursement & Billing Impact

reimbursement processes. It has also facilitated better tracking of outcomes and complications associated with this condition.

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 is the primary cause of anoxic brain damage?

Anoxic brain damage is primarily caused by a lack of oxygen to the brain, which can occur due to various events such as cardiac arrest, drowning, or severe respiratory failure.

How is anoxic brain damage diagnosed?

Diagnosis is based on clinical history, neurological examination, imaging studies, and the exclusion of other potential causes of brain injury.

What are the common complications associated with anoxic brain damage?

Common complications include cognitive impairment, motor dysfunction, seizures, autonomic disorders, and hydrocephalus.