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ICD-10 Coding for Hypoxic Encephalopathy(G93.1, P91.60, P91.61, P91.62)

Complete ICD-10-CM coding and documentation guide for Hypoxic Encephalopathy. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Anoxic EncephalopathyHypoxic-Ischemic Encephalopathy (HIE)

Related ICD-10 Code Ranges

Complete code families applicable to Hypoxic Encephalopathy

G93.1Primary Range

Anoxic brain damage, not elsewhere classified

Primary code for hypoxic encephalopathy in adults and children over 28 days.

P91.6-Primary Range

Neonatal hypoxic ischemic encephalopathy

Primary code for hypoxic ischemic encephalopathy in neonates.

Metabolic encephalopathy

Used for metabolic encephalopathy, often in differential diagnosis with hypoxic encephalopathy.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
G93.1Anoxic brain damage, not elsewhere classifiedUse for adults and children over 28 days with hypoxic brain injury.
  • Documented hypoxic event
  • MRI showing restricted diffusion in basal ganglia/cortex
P91.60Neonatal hypoxic ischemic encephalopathy, unspecifiedUse for neonates with unspecified severity of HIE.
  • Sarnat staging
  • Umbilical cord pH <7.0
P91.61Neonatal hypoxic ischemic encephalopathy, moderateUse for neonates with moderate HIE.
  • Sarnat Stage II
  • EEG showing moderate voltage suppression
P91.62Neonatal hypoxic ischemic encephalopathy, severeUse for neonates with severe HIE.
  • Sarnat Stage III
  • EEG showing burst suppression pattern

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for hypoxic encephalopathy

Essential facts and insights about Hypoxic Encephalopathy

The ICD-10 code for hypoxic encephalopathy in adults is G93.1, while neonatal cases use P91.6- codes.

Primary ICD-10-CM Codes for hypoxic encephalopathy

Anoxic brain damage, not elsewhere classified
Billable Code

Decision Criteria

clinical Criteria

  • MRI showing restricted diffusion in basal ganglia/cortex

documentation Criteria

  • Documented hypoxic event with specific cause

Applicable To

  • Hypoxic encephalopathy
  • Anoxic encephalopathy

Excludes

  • Metabolic encephalopathy (G93.41)

Clinical Validation Requirements

  • Documented hypoxic event
  • MRI showing restricted diffusion in basal ganglia/cortex

Code-Specific Risks

  • Confusion with metabolic encephalopathy

Coding Notes

  • Ensure documentation specifies 'hypoxic' or 'anoxic' and links to the cause.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Metabolic encephalopathy

G93.41
Presence of metabolic derangement like sepsis or uremia.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Hypoxic Encephalopathy to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code G93.1.

Impact

Clinical: Misrepresentation of patient's condition., Regulatory: Potential for coding audits and denials., Financial: Loss of appropriate reimbursement.

Mitigation Strategy

Use specific terms like 'hypoxic' or 'anoxic'., Document underlying cause clearly.

Impact

Reimbursement: Incorrect DRG assignment, affecting reimbursement., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation Strategy

Query for specificity to confirm hypoxic nature.

Impact

Risk of audits due to non-specific encephalopathy coding.

Mitigation Strategy

Ensure documentation specifies type and cause of encephalopathy.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Hypoxic Encephalopathy, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Hypoxic Encephalopathy

Use these documentation templates to ensure complete and accurate documentation for Hypoxic Encephalopathy. These templates include all required elements for proper coding and billing.

Adult Hypoxic Encephalopathy

Specialty: Neurology

Required Elements

  • Diagnosis
  • Etiology
  • Imaging
  • Neurological Deficits
  • Treatment

Example Documentation

[Diagnosis]: Hypoxic encephalopathy -Etiology: [Specify event, e.g., 'Cardiopulmonary arrest 03/28/25'] -Imaging: [MRI/CT findings with dates] -Neurological Deficits: [e.g., 'GCS 8, decorticate posturing'] -Treatment: [e.g., 'Goal temperature management at 36°C']

Examples: Poor vs. Good Documentation

Poor Documentation Example
Encephalopathy due to hypoxia
Good Documentation Example
Acute hypoxic encephalopathy secondary to cardiac arrest with 8-minute downtime (03/28/2025). MRI shows restricted diffusion in bilateral caudate nuclei. ABG at admission: pH 7.1, pO2 55 mmHg.
Explanation
The good example specifies the cause, timeline, and diagnostic findings, providing a complete clinical picture.

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