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v1.0.0
ICD-10 Guide
DiagnosesLeft Inguinal Hernia

Left Inguinal Hernia

ICD-10 Coding for Left Inguinal Hernia(K40.30, K40.31, K40.90)

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

Diagnosis Overview

What is Left Inguinal Hernia?
Essential facts and insights about Left Inguinal Hernia

Key Clinical Considerations:

  • Bulge in the left groin area, especially when standing or during physical activity
  • Pain or discomfort in the groin, particularly when lifting or straining
  • Possible nausea or vomiting if incarceration occurs

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of hernia symptoms and physical examination findings
  • Specific terminology such as 'left inguinal hernia' and 'reducible' or 'incarcerated'
  • Examples include detailed descriptions of the hernia's size, location, and any complications

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for distinguishing between unilateral and bilateral hernias.
  • Common errors include misclassifying the hernia as recurrent without proper documentation.

Code Exclusions

Important Exclusions

  • Right inguinal hernia (K40.90 is specific to left side)
  • Other types of hernias such as femoral or umbilical hernias

Related ICD-10 Codes

Primary Codes
K40.90
Unilateral inguinal hernia, not specified as recurrent, left side
Differential Codes
K40.31
K40.30

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

General Surgery

Specialty Applications

  • Adults and children presenting with groin pain or bulge
  • General surgery 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

Documentation requirements?

Document the size, symptoms, and any imaging results.

Billing considerations?

Ensure correct coding of the hernia type and any associated procedures.