T86.830 ICD-10-CM Code: Bone graft rejection
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Injury, poisoning and certain other consequences of external causes (S00-T88) / Complications of surgical and medical care, not elsewhere classified (T80-T88)
T86.830
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceBone graft rejection
The patient's immune system is attacking and rejecting a bone graft that was transplanted into their body.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
Basket needed
Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for T86.830 in this effective period.
Excludes 2
Official- mechanical complications of bone graft (T84.3-)
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for T86.830 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for T86.830 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for T86.830 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for T86.830 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for T86.830 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is T86.830 an HCC code?
No. T86.830 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
Coder workflow notes
Get the V28 RAF + MEAT cheat sheet
One printable page: confirm a code's V28 HCC status, its RAF weight, and the MEAT your note needs to make it stick. Free, no card.
Free PDF. No card. Unsubscribe anytime.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
T86.830 is the ICD-10-CM diagnosis code for bone graft rejection. The patient's immune system is attacking and rejecting a bone graft that was transplanted into their body. T86.830 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).
T86.830 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.
Bone graft rejection is an immune-mediated response; ensure documentation clearly indicates rejection rather than failure or infection.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for T86.830 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Bone graft rejection is an immune-mediated response; ensure documentation clearly indicates rejection rather than failure or infection
- •Specify the site of the bone graft rejection if documented, as this may affect clinical management and follow-up care