T86.840
⚠ Non-billable (Header)Corneal transplant rejection
Injury, poisoning and certain other consequences of external causes (S00-T88)
⚠️ This is a category header code — not billable. Use a more specific child code below.
⚠️ Excludes2
inheritedRules inherited from parent codes.
- • mechanical complications of corneal graft (T85.3-)
📋 Code Instructions
inherited- • code to identify other transplant complications, such as:
- • graft-versus-host disease (D89.81-)
- • malignancy associated with organ transplant (C80.2)
- • post-transplant lymphoproliferative disorders (PTLD) (D47.Z1)
Child Codes (4)
Clinical Description
ICD-10-CM code T86.840 represents corneal transplant rejection. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
This is a 7-character code at the 6th level of specificity. There are 4 more specific child codes under T86.840.
Frequently Asked Questions
What is ICD-10 code T86.840?
ICD-10-CM code T86.840 is "Corneal transplant rejection". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).
Is T86.840 a billable ICD-10 code?
No, T86.840 is a non-billable header code. A more specific child code must be used for billing.
Can T86.840 be coded with other codes?
T86.840 has 1 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.
Related Codes in T86.84
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)