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T84.50 vs Z93

T84.50 (Infection and inflammatory reaction due to unspecified internal joint prosthesis) compared with Z93 (Artificial opening status), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Relationship

Informational

Excludes2 relationship

T84.50
Infection and inflammatory reaction due to unspecified internal joint prosthesis
Z93
Artificial opening status

Distinct conditions — both may be reported.

“artificial opening status (Z93.-)”

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source: CMS ICD-10-CM tabular instructional notes

Can these codes be reported together?

Yes, when both are documented. T84.50 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

T84.50Infection and inflammatory reaction due to unspecified internal joint prosthesisZ93Artificial opening status
Billing statusNon-billable headerNon-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)
DefinitionInfection and inflammatory reaction due to unspecified internal joint prosthesis is a non-billable ICD-10-CM category code (T84.50).Artificial opening status is a non-billable ICD-10-CM category code (Z93).
7th characterThe appropriate 7th character is to be added to each code from category T84
Use additional code
code to identify infection
code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
code(s) to identify the specified condition resulting from the complication

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