Z79.4 vs Z79.84
Z79.4 (Long term (current) use of insulin) compared with Z79.84 (Long term (current) use of oral hypoglycemic drugs), 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. Z79.4 carries an Excludes2 note covering Z79.84: “long term (current) use of oral antidiabetic drugs (Z79.84)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. Z79.4 carries an Excludes2 note covering Z79.84: “long term (current) use of oral hypoglycemic drugs (Z79.84)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. Z79.84 carries an Excludes2 note covering Z79.4: “long term (current) use of insulin (Z79.4)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| Z79.4Long term (current) use of insulin | Z79.84Long term (current) use of oral hypoglycemic drugs | |
|---|---|---|
| Billing status | Billable | Billable |
| 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) use of insulin is a billable ICD-10-CM diagnosis code (Z79.4). | Long term (current) use of oral hypoglycemic drugs is a billable ICD-10-CM diagnosis code (Z79.84). |
| Includes | long term (current) drug use for prophylactic purposes | long term (current) drug use for prophylactic purposes Long term (current) use of oral antidiabetic drugs |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources