C85.1 vs C88.00
C85.1 (Unspecified B-cell lymphoma) compared with C88.00 (Waldenström macroglobulinemia not having achieved remission), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. C88.00 carries an Excludes1 note covering C85.1: “B-cell lymphoma, unspecified (C85.1-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| C85.1Unspecified B-cell lymphoma | C88.00Waldenström macroglobulinemia not having achieved remission | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Unspecified B-cell lymphoma is a non-billable ICD-10-CM category code (C85.1). | Waldenström macroglobulinemia not having achieved remission is a billable ICD-10-CM diagnosis code (C88.00). |
| Includes | — | Lymphoplasmacytic lymphoma with IgM-production, NOS Lymphoplasmacytic lymphoma with IgM-production not having achieved remission Lymphoplasmacytic lymphoma with IgM-production with failed remission Macroglobulinemia (idiopathic) (primary) NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources