U.S. ICD-10-CM · FY 2027

J91 ICD-10-CM Code: Pleural effusion in conditions classified elsewhere

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

J91

Pleural effusion in conditions classified elsewhere

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where J91 sits

  1. 1

    Chapter 10

    Diseases of the respiratory system (J00-J99)

  2. 2

    Section

    Other diseases of the pleura (J90-J94)

  3. 3

    Category J91

    Pleural effusion in conditions classified elsewhere

  4. 4

    Code J91

    Pleural effusion in conditions classified elsewhere

More specific choices

Codes under J91

J91 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for J91.

Code first

No “code first” instruction is listed for J91.

Use additional code

No “use additional code” instruction is listed for J91.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for J91.

Excludes2

Conditions not included here that may be reported separately when present.

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

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code J91 mean?

J91 is the FY 2027 U.S. ICD-10-CM code for “Pleural effusion in conditions classified elsewhere.”

Is J91 a billable or specific ICD-10-CM code?

No. J91 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is J91 located in ICD-10-CM?

J91 is listed in Chapter 10, Diseases of the respiratory system (J00-J99), within Other diseases of the pleura (J90-J94) (J90–J94), under category J91, Pleural effusion in conditions classified elsewhere.

What coding notes are listed for J91?

No inclusion terms are listed for J91 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. Excludes2 notes: pleural effusion in heart failure (I50.-); pleural effusion in systemic lupus erythematosus (M32.13).

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