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I27.84 vs Z98

I27.84 (Fontan related circulation) compared with Z98 (Other postprocedural states), 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. Z98 carries an Excludes2 note covering I27.84: “Fontan related circulation (I27.84-)”

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

Side by side

I27.84Fontan related circulationZ98Other postprocedural states
Billing statusNon-billable header

Report instead: I27.840, I27.841, I27.848, I27.849

Non-billable header

Report instead: Z98.0, Z98.1, Z98.2, Z98.3, Z98.41

ClassificationI00-I99 — Diseases of the Circulatory System (I00-I99)Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99)
DefinitionFontan related circulation is a non-billable ICD-10-CM category code (I27.84).Other postprocedural states is a non-billable ICD-10-CM category code (Z98).
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources