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v1.0.0
ICD-10 Guide
DiagnosesPneumocephalus

Pneumocephalus

ICD-10 Coding for Pneumocephalus(G93.89, S02.11XA, T79.8XXA)

PRIMARY SPECIALTYEmergency Medicine
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Pneumocephalus?
Essential facts and insights about Pneumocephalus

Key Clinical Considerations:

  • Headache, altered mental status, nausea, vomiting
  • CT scan showing air in the cranial cavity
  • Neurological examination may reveal focal deficits or signs of increased intracranial pressure

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of trauma or surgery, symptoms, imaging results
  • ICD-10-CM code G93.85 for pneumatocele, G93.89 for other specified disorders of brain
  • Example: 'Patient presents with pneumocephalus following craniotomy, confirmed by CT scan.'

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding traumatic vs. non-traumatic pneumocephalus.
  • Common errors include misclassifying the cause of pneumocephalus.

Code Exclusions

Important Exclusions

  • Intracranial hemorrhage, skull fractures
  • Alternative codes for air embolism or other intracranial conditions

Related ICD-10 Codes

Primary Codes
G93.85
Pneumatocele
G93.89
Other specified disorders of brain
Ancillary Codes
J95.8-
Differential Codes
S06.5-

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Emergency Medicine

Specialty Applications

  • Trauma patients, post-surgical patients
  • Emergency departments, trauma centers

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Document the mechanism of injury, symptoms, and imaging findings.

Billing considerations?

Ensure accurate coding to reflect the complexity of the case and any associated procedures.