511.81
Malignant pleural effusion
The ICD-9 code for malignant pleural effusion is 511.81.
Legacy code — retired October 1, 2015ICD-10-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents.
View ICD-9 → ICD-10 crosswalk for 511.81 →