Z79.60 — Long term (current) use of unspecified immunomodulators and immunosuppressants

BillableUnspecified

Is Z79.60 billable?

Yes, but Z79.60 is an unspecified code. Z79.60 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Z79.60 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting Z79.60 — the more specific alternatives are listed below.

More specific alternatives

Z79.60 at a glance

Code	Z79.60
Description	Long term (current) use of unspecified immunomodulators and immunosuppressants
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

What Medicare edits apply to Z79.60?

The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z79.60 directly.

Cannot be a principal diagnosis — MCE edit 9

CMS will reject this code as the principal diagnosis on an inpatient claim. It describes something other than the condition chiefly responsible for the admission.

Which MS-DRGs does Z79.60 group to?

Z79.60 sits in MDC 23 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

949Aftercare with CC/MCCmedical
950Aftercare without CC/MCCmedical

How is Z79.60 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to Z79.60. They show the wording a clinician may have documented, which often differs from the Tabular description.

Long-term › immunomodulators, unspecified (current) (prophylactic) drug therapy (use of)
Long-term › immunosuppressants, unspecified (current) (prophylactic) drug therapy (use of)

Excludes2 — not included here — inherited from Z79

The conditions below are not part of Z79.60, but a patient may have both at the same time. When documentation supports it, Z79.60 and the excluded code may both be reported.

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

Excludes2 — not included here — inherited from Z79.6

The conditions below are not part of Z79.60, but a patient may have both at the same time. When documentation supports it, Z79.60 and the excluded code may both be reported.

long term (current) use of steroids (Z79.5-)
long term (current) use of agents affecting estrogen receptors and estrogen levels (Z79.81-)

Code also — inherited from Z77-Z99

Two codes may be needed to describe the condition fully. Whether Z79.60 is sequenced first depends on the reason for the encounter.

any follow-up examination (Z08-Z09)

Code also — inherited from Z79