ICD-10 Diagnosis Code J91

Pleural effusion in conditions classified elsewhere

Diagnosis Code J91

ICD-10: J91
Short Description: Pleural effusion in conditions classified elsewhere
Long Description: Pleural effusion in conditions classified elsewhere
This is the 2018 version of the ICD-10-CM diagnosis code J91

Not Valid for Submission
The code J91 is a "header" and not valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the respiratory system (J00–J99)
    • Other diseases of the pleura (J90-J94)
      • Pleural effusion in conditions classified elsewhere (J91)

Information for Medical Professionals

Information for Patients


Pleural Disorders

Your pleura is a large, thin sheet of tissue that wraps around the outside of your lungs and lines the inside of your chest cavity. Between the layers of the pleura is a very thin space. Normally it's filled with a small amount of fluid. The fluid helps the two layers of the pleura glide smoothly past each other as your lungs breathe air in and out.

Disorders of the pleura include

  • Pleurisy - inflammation of the pleura that causes sharp pain with breathing
  • Pleural effusion - excess fluid in the pleural space
  • Pneumothorax - buildup of air or gas in the pleural space
  • Hemothorax - buildup of blood in the pleural space

Many different conditions can cause pleural problems. Viral infection is the most common cause of pleurisy. The most common cause of pleural effusion is congestive heart failure. Lung diseases, like COPD, tuberculosis, and acute lung injury, cause pneumothorax. Injury to the chest is the most common cause of hemothorax. Treatment focuses on removing fluid, air, or blood from the pleural space, relieving symptoms, and treating the underlying condition.

NIH: National Heart, Lung, and Blood Institute

  • Chest tube insertion (Medical Encyclopedia)
  • Collapsed lung (pneumothorax) (Medical Encyclopedia)
  • Empyema (Medical Encyclopedia)
  • Hemothorax (Medical Encyclopedia)
  • Lung surgery (Medical Encyclopedia)
  • Metastatic pleural tumor (Medical Encyclopedia)
  • Pleural effusion (Medical Encyclopedia)
  • Pleurisy (Medical Encyclopedia)


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