C88.31 – Immunoproliferative small intestinal disease, in remission

ICD-10-CM 2027 diagnosis code · Malignant neoplasms of lymphoid, hematopoietic and related tissue

Billable code

ICD-10-CM code C88.31

Code: C88.31 (claims format: C8831)
Description: Immunoproliferative small intestinal disease, in remission
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 2. Neoplasms (C00-D49)
Block: C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue
Parent codes: C88 › C88.3

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

C88 – Malignant immunoproliferative diseases and certain other B-cell lymphomas

Excludes1 (not coded here):

B-cell lymphoma, unspecified (C85.1-)
personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues (Z85.79)

C88.3 – Immunoproliferative small intestinal disease

Applicable to:

Alpha heavy chain disease
Mediterranean lymphoma

Block C81-C96

Excludes2 (not included here):

Kaposi's sarcoma of lymph nodes (C46.3)
secondary and unspecified neoplasm of lymph nodes (C77.-)
secondary neoplasm of bone marrow (C79.52)
secondary neoplasm of spleen (C78.89)

Related codes in C88.3

C88.30 – Immunoproliferative small intestinal disease not having achieved remissionBillable

Frequently asked questions

What is ICD-10 code C88.31?

C88.31 is the ICD-10-CM code for immunoproliferative small intestinal disease, in remission, in the block C81-C96 (Malignant neoplasms of lymphoid, hematopoietic and related tissue).

Is C88.31 a billable code?

Yes. C88.31 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does C88.31 belong to?

It belongs to category C88 – Malignant immunoproliferative diseases and certain other B-cell lymphomas.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.