C84.4A
BillablePeripheral T-cell lymphoma, not elsewhere classified, in remission
HCC Category Mapping
V28HCC 19 — Lymphoma and Other Cancers
0.105V24HCC 10 — Lymphoma and Other Cancers
0.675ESRDHCC 10 — Lymphoma and Other Cancers
0.000RxHCCHCC 21 — Hodgkin Lymphoma and Other Cancers
0.000What This Code Means
A type of cancer affecting T-cells that is not classified elsewhere, currently in remission (no active disease detected).
Coding Tips
- •Only use this code when documentation explicitly states remission status
- •Verify the remission is complete or partial as documented by the physician
Clinical Significance
Peripheral T-cell lymphoma not elsewhere classified in remission indicates the patient has a history of this aggressive lymphoma but currently has no active disease. Remission status is clinically significant because PTCL-NOS has high relapse rates, requiring ongoing surveillance. This code maintains the cancer diagnosis for risk adjustment while accurately reflecting current disease status.
Documentation Requirements
- ✓Original pathology confirming PTCL-NOS diagnosis
- ✓Physician statement explicitly documenting remission status (complete or partial)
- ✓Most recent imaging (PET/CT) confirming no active disease if complete remission
- ✓Documentation of ongoing surveillance schedule
- ✓Treatment history including chemotherapy regimen completed
Commonly Confused Codes
C84.40 — PTCL-NOS, unspecified site: This is for active disease with unspecified location, NOT for remission statusZ85.79 — Personal history of other malignant neoplasms of lymphoid tissue: History code implies the cancer is resolved and no longer being monitored as an active malignancy; C84.4A implies active monitoring during remissionC84.41-C84.49 — Site-specific PTCL-NOS codes: These indicate active disease at a specific site, not remission
Code Hierarchy
└C84Mature T/NK-cell lymphomas└C84.4Peripheral T-cell lymphoma, not elsewhere classified└C84.4APeripheral T-cell lymphoma, not elsewhere classified, in remission
└C84.4APeripheral T-cell lymphoma, not elsewhere classified, in remission