Z79 vs Z92.2

Z79 (Long term (current) drug therapy) compared with Z92.2 (Personal history of drug therapy), 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. Z92.2 carries an Excludes2 note covering Z79: “long term (current) drug therapy (Z79.-)”

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

Side by side

	Z79Long term (current) drug therapy	Z92.2Personal history of drug therapy
Billing status	Non-billable header Report instead: Z79.01, Z79.02, Z79.1, Z79.2, Z79.3	Non-billable header Report instead: Z92.21, Z92.22, Z92.23, Z92.240, Z92.241
Classification	Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99)	Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99)
Definition	Long term (current) drug therapy is a non-billable ICD-10-CM category code (Z79).	Personal history of drug therapy is a non-billable ICD-10-CM category code (Z92.2).
Includes	long term (current) drug use for prophylactic purposes	—

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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