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v1.0.0
ICD-10 Guide
DiagnosesIdiopathic Intracranial Hypertension

Idiopathic Intracranial Hypertension

ICD-10 Coding for Idiopathic Intracranial Hypertension(G93.2)

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

Diagnosis Overview

What is Idiopathic Intracranial Hypertension?
Essential facts and insights about Idiopathic Intracranial Hypertension

Key Clinical Considerations:

  • Headache, often worsening in the morning or with straining
  • Visual disturbances, such as transient visual obscurations or diplopia
  • Papilledema observed on fundoscopic examination

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including symptoms and duration
  • Results of lumbar puncture showing elevated opening pressure
  • Imaging studies (MRI/CT) ruling out secondary causes

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding based on clinical criteria and diagnostic tests.
  • Common errors include misdiagnosing secondary causes or incorrect coding.

Code Exclusions

Important Exclusions

  • Secondary causes of intracranial hypertension such as tumors or venous sinus thrombosis
  • Alternative codes for other types of headaches

Related ICD-10 Codes

Primary Codes
G93.2
Idiopathic intracranial hypertension
Ancillary Codes
H47.11
H49.2
Differential Codes
I67.1
G96.1

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Neurology

Specialty Applications

  • Primarily affects obese women of childbearing age
  • Clinical settings include neurology clinics and emergency departments

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

What are the documentation requirements?

Document all symptoms, diagnostic tests, and clinical findings.

What are the billing considerations?

Ensure accurate coding and documentation to support medical necessity.