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v1.0.0
ICD-10 Guide
DiagnosesLarge Hiatal Hernia

Large Hiatal Hernia

ICD-10 Coding for Large Hiatal Hernia(K44.9, K44.0)

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

Diagnosis Overview

What is Large Hiatal Hernia?
Essential facts and insights about Large Hiatal Hernia

Key Clinical Considerations:

  • Symptoms may include gastroesophageal reflux, chest pain, difficulty swallowing, and regurgitation.
  • Key diagnostic tests include upper gastrointestinal (GI) series, esophagogastroduodenoscopy (EGD), and manometry.
  • Physical exam findings may reveal epigastric tenderness or signs of reflux.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Required documentation elements include patient history, symptom description, diagnostic test results, and treatment plan.
  • Specific coding terminology includes 'hiatal hernia', 'gastroesophageal reflux disease (GERD)', and 'esophageal obstruction'.
  • Documentation examples: 'Patient presents with symptoms consistent with large hiatal hernia, confirmed by EGD showing significant displacement of the gastroesophageal junction.'

Coding Guidelines

Usage Guidelines & Examples

  • Usage guidelines emphasize the importance of specifying the type of hernia for accurate coding.
  • Common errors include misclassifying the type of hernia or failing to document associated symptoms.

Code Exclusions

Important Exclusions

  • Excluded conditions include sliding hiatal hernia and paraesophageal hernia.
  • Alternative codes may include those for complications related to hiatal hernia.

Related ICD-10 Codes

Primary Codes
K44.9
Unspecified hiatal hernia
K44.1
Large hiatal hernia
Ancillary Codes
R11.2
K21.9
D50.0
Differential Codes
K44.0
K44.1
K44.9

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

General Surgery

Specialty Applications

  • Patient populations include adults with chronic GERD or obesity.
  • Clinical settings include outpatient surgical centers and gastroenterology clinics.

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?

Documentation must include detailed patient history, symptomatology, and results from diagnostic tests.

What are the billing considerations?

Ensure accurate coding to reflect the severity and type of hernia for appropriate reimbursement.