2026 ICD-10-CM Diagnosis Code T86.41Liver transplant rejection

ICD-10-CM Codes›S00–T88›T80-T88›T86

ICD-10-CM T86.41
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T86.41 is a billable ICD-10-CM diagnosis code for liver transplant rejection. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 441 through 443. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication of transplanted organs or tissue, initial encounter.

Code Identity

ICD-10-CM Code
T86.41
Billable Status
Yes — Valid for Submission
Code Describes
Liver transplant rejection
Short Description
Liver transplant rejection
Same as the full description in the CMS dataset.
Parent Code
T86.4
Complications of liver transplant

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT80-T88Complications of surgical and medical care, not elsewhere classified
CategoryT86Complications of transplanted organs and tissue
This CodeT86.41Liver transplant rejection

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Accelerated rejection of liver transplant
  • Acute rejection of liver transplant
  • Chronic rejection of liver transplant
  • Complication of transplanted liver
  • Hyperacute rejection of liver transplant
  • Liver transplant failure
  • Liver transplant failure and rejection
  • Liver transplant rejection

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Complications of transplanted organs and tissue (T86). Use the following options for the applicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Complication(s) (from) (of)
      • transplant
        • liver
          • rejection
    • Rejection
      • transplant
        • liver

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ036
Complication of transplanted organs or tissue, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Liver Transplantation

Your liver is the largest organ inside your body. It helps your body digest food, store energy, and remove poisons. You cannot live without a liver that works. If your liver fails, your doctor may put you on a waiting list for a liver transplant. Doctors do liver transplants when other treatment cannot keep a damaged liver working.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert T86.41 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
996.82 Compl liver transplant
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About T86.41Overview

Is T86.41 (Complications of liver transplant) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report liver transplant rejection on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does T86.41 group to?

When liver transplant rejection is the principal diagnosis on an inpatient stay, it groups to MS-DRG 441, 442, 443, with relative weights from 0.6997 to 1.7947 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of T86.41?

Under the General Equivalence Mappings, liver transplant rejection converts to ICD-9-CM 996.82 (compl liver transplant). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.