ICD-10-CM > J00-J99 > J90-J94 > J91 J91 Pleural effusion in conditions classified elsewhere Non-Billable/Non-Specific Type 2 Excludes pleural effusion in heart failure (I50.-)pleural effusion in systemic lupus erythematosus (M32.13) Codes J91.0Malignant pleural effusionJ91.8Pleural effusion in other conditions classified elsewhere