ICD10BillableValid for clinical use

ICD-10 Code T86.810: Lung transplant rejection

T86.810 is a billable ICD-10 diagnosis code used to classify Lung transplant rejection in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Injury, poisoning and certain other consequences of external causes (S00-T88).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Injury, poisoning and certain other consequences of external causes (S00-T88).

When is it used?

  • May be used when a clinician documents lung transplant rejection in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
19Injury, poisoning and certain other consequences of external causes (S00-T88)
block
T07-T88Injury, poisoning and certain other consequences of external causes
block
T80-T88Complications of surgical and medical care, not elsewhere classified
category
T86Complications of transplanted organs and tissue
category
T86.8Complications of other transplanted organs and tissues
category
T86.81Complications of lung transplant
currentT86.81

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Emergency Medicine SpecialistOrthopedic SpecialistPulmonologist

Coverage-related procedures and services

CPT 81595high
CARDIOLOGY (HEART TRANSPLANT), MRNA, GENE EXPRESSION PROFILING BY REAL-TIME QUANTITATIVE PCR OF 20 GENES (11 CONTENT AND 9 HOUSEKEEPING), UTILIZING SUBFRACTION OF PERIPHERAL BLOOD, ALGORITHM REPORTED AS A REJECTION RISK SCORE
Source: CMS coverage guidance
CPT 0320Uhigh
NEPHROLOGY (RENAL TRANSPLANT), RNA EXPRESSION BY SELECT TRANSCRIPTOME SEQUENCING, USING POSTTRANSPLANT PERIPHERAL BLOOD, ALGORITHM REPORTED AS A RISK SCORE FOR ACUTE CELLULAR REJECTION
Source: CMS coverage guidance
CPT 81558high
TRANSPLANTATION MEDICINE (ALLOGRAFT REJECTION, KIDNEY), MRNA, GENE EXPRESSION PROFILING BY QUANTITATIVE POLYMERASE CHAIN REACTION (QPCR) OF 139 GENES, UTILIZING WHOLE BLOOD, ALGORITHM REPORTED AS A BINARY CATEGORIZATION AS TRANSPLANT EXCELLENCE, WHICH INDICATES IMMUNE QUIESCENCE, OR NOT TRANSPLANT EXCELLENCE, INDICATING SUBCLINICAL REJECTION
Source: CMS coverage guidance
CPT 0540Uhigh
TRANSPLANTATION MEDICINE, QUANTIFICATION OF DONOR-DERIVED CELL-FREE DNA USING NEXT-GENERATION SEQUENCING ANALYSIS OF PLASMA, REPORTED AS PERCENTAGE OF DONOR-DERIVED CELL-FREE DNA TO DETERMINE PROBABILITY OF REJECTION
Source: CMS coverage guidance
CPT 0118Uhigh
TRANSPLANTATION MEDICINE, QUANTIFICATION OF DONOR-DERIVED CELL-FREE DNA USING WHOLE GENOME NEXT-GENERATION SEQUENCING, PLASMA, REPORTED AS PERCENTAGE OF DONORDERIVED CELL-FREE DNA IN THE TOTAL CELL-FREE DNA
Source: CMS coverage guidance
CPT 81479high
UNLISTED MOLECULAR PATHOLOGY PROCEDURE
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Lung transplant rejection

Frequently asked questions

Code details

CodeT86.810
SystemICD10
Display nameLung transplant rejection
ChapterInjury, poisoning and certain other consequences of external causes (S00-T88)
BlockComplications of surgical and medical care, not elsewhere classified

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Complication(s) (from) (of)Rejection

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code T86.810 for Lung transplant rejection | HealthAssure