Skip to main content

T86.842 vs Z93

T86.842 (Corneal transplant infection) compared with Z93 (Artificial opening status), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Can these codes be reported together?

Yes, when both are documented. T86.842 carries an Excludes2 note covering Z93: “artificial opening status (Z93.-)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

T86.842Corneal transplant infectionZ93Artificial opening status
Billing statusNon-billable header

Report instead: T86.8421, T86.8422, T86.8423, T86.8429

Non-billable header

Report instead: Z93.0, Z93.1, Z93.2, Z93.3, Z93.4

ClassificationS00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99)
DefinitionCorneal transplant infection is a non-billable ICD-10-CM category code (T86.842).Artificial opening status is a non-billable ICD-10-CM category code (Z93).
Use additional code
code to specify infection
code to identify other transplant complications, such as:
graft-versus-host disease (D89.81-)
—
Edit this comparisonCheck a whole claim

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources