T86.890
BillableOther transplanted tissue rejection
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is T86.890 an HCC code?
No. T86.890 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
T86.890 is the ICD-10-CM diagnosis code for other transplanted tissue rejection. The patient's immune system is attacking and rejecting a transplanted tissue or organ other than those with specific codes, causing the transplant to fail. T86.890 sits in the ICD-10-CM chapter for injury, poisoning and certain other consequences of external causes (s00-t88), within the section covering complications of surgical and medical care, not elsewhere classified (t80-t88).
T86.890 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
This code is for rejection of tissues not specifically listed elsewhere (e.g., skin, bone, cartilage grafts).
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for T86.890 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code is for rejection of tissues not specifically listed elsewhere (e.g., skin, bone, cartilage grafts)
- •Distinguish between acute and chronic rejection if documented, though this code covers both