Z79.89 — Other long term (current) drug therapy

Not billable

Is Z79.89 billable?

No — Z79.89 is a non-billable header code. Z79.89 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath Z79.89.

Billable codes under this header

Z79.89 at a glance

Code	Z79.89
Description	Other long term (current) drug therapy
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Excludes2 — not included here — inherited from Z79

The conditions below are not part of Z79.89, but a patient may have both at the same time. When documentation supports it, Z79.89 and the excluded code may both be reported.

drug abuse and dependence (F11-F19)
drug use complicating pregnancy, childbirth, and the puerperium (O99.32-)

Code also — inherited from Z77-Z99

Two codes may be needed to describe the condition fully. Whether Z79.89 is sequenced first depends on the reason for the encounter.

any follow-up examination (Z08-Z09)

Code also — inherited from Z79

Two codes may be needed to describe the condition fully. Whether Z79.89 is sequenced first depends on the reason for the encounter.

any therapeutic drug level monitoring (Z51.81)

What codes fall under Z79.89? (3)

How long has Z79.89 existed?

Z79.89 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.