C84.6A
BillableAnaplastic large cell lymphoma, ALK-positive, in remission
HCC Category Mapping
V28HCC 20 — Lung and Other Severe Cancers
0.000V24HCC 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 aggressive lymphoma (cancer of immune cells) with a specific genetic marker (ALK-positive) that is currently in remission, meaning the cancer is not actively growing.
Coding Tips
- •The '6A' suffix specifically indicates ALK-positive status and remission status; do not confuse with ALK-negative variants
- •Remission status should be documented in the medical record; clarify with the oncologist if the patient is in complete or partial remission
Clinical Significance
Anaplastic large cell lymphoma, ALK-positive, in remission means the patient achieved disease control after treatment for this ALK-driven lymphoma. ALK-positive ALCL has excellent remission rates (approximately 80-90% complete remission with CHOP-based chemotherapy), but ongoing surveillance is necessary. This code maintains cancer diagnosis for risk adjustment while reflecting current remission status.
Documentation Requirements
- ✓Original pathology confirming ALCL ALK-positive diagnosis
- ✓Oncologist documentation explicitly stating remission (complete or partial)
- ✓Most recent PET/CT or imaging confirming no active disease
- ✓Surveillance plan documented
- ✓Treatment history including chemotherapy regimen received
Commonly Confused Codes
C84.60 — ALCL ALK-positive, unspecified site (active disease): Use C84.6A when remission is documentedC84.7B — ALCL ALK-negative, in remission: Different ALK status; verify original pathologyZ85.79 — Personal history of other malignant neoplasms of lymphoid tissue: History code for resolved cancer no longer under active surveillance; premature to use while still in remission monitoring
Code Hierarchy
└C84Mature T/NK-cell lymphomas└C84.6Anaplastic large cell lymphoma, ALK-positive└C84.6AAnaplastic large cell lymphoma, ALK-positive, in remission
└C84.6AAnaplastic large cell lymphoma, ALK-positive, in remission