C84.Z vs C86.30
C84.Z (Other mature T/NK-cell lymphomas) compared with C86.30 (Subcutaneous panniculitis-like T-cell lymphoma 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. C84.Z carries an Excludes1 note covering C86.30: “subcutaneous panniculitis-like T-cell lymphoma (C86.30)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. C86.30 carries an Excludes1 note covering C84.Z: “mature T/NK-cell lymphomas (C84.-)”
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
| C84.ZOther mature T/NK-cell lymphomas | C86.30Subcutaneous panniculitis-like T-cell lymphoma not having achieved remission | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Other mature T/NK-cell lymphomas is a non-billable ICD-10-CM category code (C84.Z). | Subcutaneous panniculitis-like T-cell lymphoma not having achieved remission is a billable ICD-10-CM diagnosis code (C86.30). |
| Includes | — | Subcutaneous panniculitis-like T-cell lymphoma NOS Subcutaneous panniculitis-like T-cell lymphoma with failed remission |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources