J91
Pleural effusion in conditions classified elsewhere
Non-billable headerNot valid on its own. Use one of the more specific codes under it.
J91 is a non-billable ICD-10-CM code category for pleural effusion in conditions classified elsewhere. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are J91.0 Malignant pleural effusion and J91.8 Pleural effusion in other conditions classified elsewhere. Its coding notes include a Use additional code instruction and 11 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
Also from chapter/block level (7 notes)
Inherited from Chapter 10 Diseases of the respiratory system
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
This code
Also from chapter/block level (9 notes)
Inherited from Chapter 10 Diseases of the respiratory system
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- smoke inhalation (T59.81-)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
Also from chapter/block level (1 note)
Inherited from Chapter 10 Diseases of the respiratory system
- When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g. tracheobronchitis to bronchitis in J40).