What does ICD-10 code T86.3 mean?

ICD-10 code T86.3 is the standardized code used for complications of heart-lung transplant in medical records and coding systems.

When is ICD-10 code T86.3 used?

Doctors, hospitals, and insurers may use ICD-10 code T86.3 when recording complications of heart-lung transplant in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code T86.3 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code T86.3: Complications of heart-lung transplant

Name: ICD-10 Code T86.3: Complications of heart-lung transplant
Creator: HealthAssure Clinical Team
Published: 2026-05-26T05:25:39.445Z

T86.3 is an ICD-10 diagnosis entry used to group records related to Complications of heart-lung transplant. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. 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 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. 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 complications of heart-lung transplant in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

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.
This entry may represent a broader category rather than the most specific billable code.

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

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

Emergency Medicine SpecialistOrthopedic SpecialistENT SpecialistCardiologistPulmonologist

Sibling codes

T86.0Complications of bone marrow transplant T86.1Complications of kidney transplant T86.2Complications of heart transplant T86.4Complications of liver transplant T86.5Complications of stem cell transplantbillable T86.8Complications of other transplanted organs and tissues T86.9Complication of unspecified transplanted organ and tissue

Mapped diagnoses and classifications

SNOMED_CT 213152006high

Heart-lung transplant failure and rejection

Source: SNOMED International ICD-10 map

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

T86.3

Replacement codes

T86.30 — Unspecified complication of heart-lung transplantT86.31 — Heart-lung transplant rejectionT86.32 — Heart-lung transplant failureT86.33 — Heart-lung transplant infectionT86.39 — Other complications of heart-lung transplant

Common synonyms

Complications of heart-lung transplant

Frequently asked questions

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.