Is T86.840 a billable ICD-10-CM code?

No. T86.840 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does T86.840 sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Complications of surgical and medical care, not elsewhere classified (T80-T88).

T86.840

T86.840 — Corneal transplant rejection

Non-billable headerICD-10-CM

T86.840 is a non-billable header ICD-10-CM code for corneal transplant rejection. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2 inherited from the categories above T86.840

Also inherited, and the opposite of Excludes1: these conditions are not part of T86.840, but a patient can have both, so you may code both.

Written on T86.84 — Complications of corneal transplant

mechanical complications of corneal graft (T85.3-)

Other codes that can never be billed with T86.840

These codes carry an Excludes1 note pointing at T86.840. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading T86.840 alone.

Z98.85Transplanted organ removal status

Risk adjustment

T86.840 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

The condition this code belongs to

Every code for the condition on one page, which one applies when, and the mistake coders make with it.

Kidney transplant ICD-10 codes

Code history

T86.840 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead T86.840

4 child codes. Green means billable.

Related codes at this level

Codes that share T86.84. If T86.840 is not quite right, the correct code is usually one of these.

Questions about T86.840

Is T86.840 a billable ICD-10-CM code?: No. T86.840 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does T86.840 sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Complications of surgical and medical care, not elsewhere classified (T80-T88).