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

Codes under C88 (Malignant immunoproliferative diseases and certain other B-cell lymphomas). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
C88.0	Waldenstrom macroglobulinemia	—
C88.00	Waldenstrom macroglobulinemia not having achieved remission	✓
C88.01	Waldenstrom macroglobulinemia, in remission	✓
C88.2	Heavy chain disease	—
C88.3	Immunoproliferative small intestinal disease	—
C88.4	Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue [MALT-lymphoma]	—
C88.8	Other malignant immunoproliferative diseases	—
C88.9	Malignant immunoproliferative disease, unspecified	—
C88.20	Heavy chain disease not having achieved remission	✓
C88.21	Heavy chain disease, in remission	✓
C88.30	Immunoproliferative small intestinal disease not having achieved remission	✓
C88.31	Immunoproliferative small intestinal disease, in remission	✓
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	✓
C88.80	Other malignant immunoproliferative diseases not having achieved remission	✓
C88.81	Other malignant immunoproliferative diseases, in remission	✓
C88.90	Malignant immunoproliferative disease, unspecified not having achieved remission	✓
C88.91	Malignant immunoproliferative disease, unspecified, in remission	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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