C88.21 Heavy chain disease, in remission

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Heavy chain disease, in remission is C88.21 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
C81-C96: Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
Category C88
19 codes (12 billable)
FY2026 Status
Introduced in FY2025

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.a
Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference C88.21 with the canonical source and edition:

C88.21 — Heavy chain disease, in remission. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/C88.21

Canonical URL: https://icd10codingpro.com/codes/C88.21

Related Codes

Parent Code

C88 Malignant immunoproliferative diseases and certain other B-cell lymphomas

Related Codes in C88

C88 Malignant immunoproliferative diseases and certain other B-cell lymphomas C88.0 Waldenström macroglobulinemia C88.00 Waldenström macroglobulinemia not having achieved remission C88.01 Waldenström macroglobulinemia, in remission C88.2 Heavy chain disease C88.20 Heavy chain disease not having achieved remission C88.3 Immunoproliferative small intestinal disease C88.30 Immunoproliferative small intestinal disease not having achieved remission C88.31 Immunoproliferative small intestinal disease, in remission C88.4 Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue [MALT-lymphoma] C88.40 Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue [MALT-lymphoma] not having achieved remission C88.41 Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue [MALT-lymphoma], in remission C88.8 Other malignant immunoproliferative diseases C88.80 Other malignant immunoproliferative diseases not having achieved remission C88.81 Other malignant immunoproliferative diseases, in remission C88.9 Malignant immunoproliferative disease, unspecified C88.90 Malignant immunoproliferative disease, unspecified not having achieved remission C88.91 Malignant immunoproliferative disease, unspecified, in remission
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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