DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

J91 Pleural effusion in conditions classified elsewhere

  • Header · not billable

J91 is not billable. The category heads 2 billable codes in FY2027: the 2 codes directly below it.

Index → code

  • Effusionmalignant pleural → J91.0
  • Effusionpleura, pleurisy, pleuritic, pleuropericardialmalignant → J91.0
  • Effusionpleura, pleurisy, pleuritic, pleuropericardialin conditions classified elsewhere → J91.8

Where it sits

  1. Chapter 10 Diseases of the respiratory system (J00-J99)
  2. J90-J94 Other diseases of the pleura (J90-J94)
  3. J91 Pleural effusion in conditions classified elsewhere
Billable codes
2
Subdivisions
2
CC / MCC codes
2 / 0
HCC V28 codes
1
New FY2027
0
Index entries
5

Codes in J91

  1. J91.0
    Malignant pleural effusion
    BillableCC17
    Code first 1

    Code first

    • underlying neoplasm (C00-D49) C00 D49
  2. J91.8
    Pleural effusion in other conditions classified elsewhere
    BillableCC
    Code first 3

    Code first

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At J91

Excludes2

  • pleural effusion in heart failure (I50.-) I50
  • pleural effusion in systemic lupus erythematosus (M32.13) M32.13

Notes that also apply

Chapter 10 instructions (Notes 1, Excludes2 9, Use additional code 7): printed on the chapter 10 page.

Index entries

  • Chylothorax (nonfilarial)filarial → B74.9 [J91.8]
  • Effusionmalignant pleural → J91.0
  • Hydrothorax (double) (pleura)chylous (nonfilarial)filarial → B74.9 [J91.8]
  • Effusionpleura, pleurisy, pleuritic, pleuropericardialmalignant → J91.0
  • Effusionpleura, pleurisy, pleuritic, pleuropericardialin conditions classified elsewhere → J91.8

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy