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v1.0.0
ICD-10 Guide
DiagnosesLoculated Pleural Effusion

Loculated Pleural Effusion

ICD-10 Coding for Loculated Pleural Effusion(J90, J91.0, J91.8)

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

Diagnosis Overview

What is Loculated Pleural Effusion?
Essential facts and insights about Loculated Pleural Effusion

Key Clinical Considerations:

  • Dyspnea or difficulty breathing
  • Chest pain or discomfort
  • Cough, possibly productive

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including symptoms and duration
  • Imaging results (e.g., chest X-ray, CT scan)
  • Assessment of fluid characteristics (e.g., transudate vs. exudate)

Coding Guidelines

Usage Guidelines & Examples

  • Ensure correct use of J90 for unspecified effusions versus J91.8 for specific types.
  • Common errors include misclassifying loculated effusions as simple effusions.

Code Exclusions

Important Exclusions

  • Simple pleural effusion (J90)
  • Pneumothorax (J93)

Related ICD-10 Codes

Primary Codes
J90
Pleural effusion, not elsewhere classified
J91.8
Other specified pleural effusion
Differential Codes
J91.0
A15.6

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Pulmonology

Specialty Applications

  • Patients with underlying lung disease, malignancies, or infections
  • Emergency departments, outpatient clinics, and inpatient settings

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 the patient's symptoms, imaging findings, and any interventions performed.

What are the billing considerations?

Ensure accurate coding based on imaging results and fluid analysis to avoid denials.