presence of fluid in the pleural cavity resulting from excessive transudation or exudation from the pleural surfaces; it is a sign of disease and not a diagnosis in itself.
An abnormal collection of fluid between the thin layers of tissue (pleura) lining the lung and the wall of the chest cavity.
Increased amounts of fluid within the pleural cavity containing no malignant cells
Also applicable to/known as
Pleural effusion NOS
Pleurisy:
exudative
serofibrinous
serous
with effusion NOS
ICD-9-CM Volume 2 Index Entries That Refer To 511.9
2008 ICD-9-CM Diagnosis Code 511.9
511.9
