U.S. ICD-10-CM · FY 2027

C88.9 ICD-10-CM Code: Malignant immunoproliferative disease, unspecified

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

Code definition

Official description

C88.9

Malignant immunoproliferative disease, unspecified

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

Classification

Where C88.9 sits

  1. 1

    Chapter 2

    Neoplasms (C00-D49)

  2. 2

    Section

    Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)

  3. 3

    Category C88

    Malignant immunoproliferative diseases and certain other B-cell lymphomas

  4. 4

    Code C88.9

    Malignant immunoproliferative disease, unspecified

More specific choices

Codes under C88.9

C88.9 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

  • Immunoproliferative disease NOS

Code first

No “code first” instruction is listed for C88.9.

Use additional code

No “use additional code” instruction is listed for C88.9.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for C88.9.

Excludes2

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

No Excludes2 note is listed for C88.9.

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 C88.9 mean?

C88.9 is the FY 2027 U.S. ICD-10-CM code for “Malignant immunoproliferative disease, unspecified.”

Is C88.9 a billable or specific ICD-10-CM code?

No. C88.9 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 C88.9 located in ICD-10-CM?

C88.9 is listed in Chapter 2, Neoplasms (C00-D49), within Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96) (C81–C96), under category C88, Malignant immunoproliferative diseases and certain other B-cell lymphomas.

What coding notes are listed for C88.9?

Its listed inclusion terms are Immunoproliferative disease NOS. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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