All ICD10 Codes

Z79

Non-Billable
ChapterZ00–Z99
Rankcategory
Official Description

Long term (current) drug therapy

Use a more specific code (4 billable, 4 non-billable)
Z79.0Long term (current) use of anticoagulants and antithrombotics/antiplateletshas subcodesZ79.1Long term (current) use of non-steroidal anti-inflammatories (NSAID)Z79.2Long term (current) use of antibioticsZ79.3Long term (current) use of hormonal contraceptivesZ79.4Long term (current) use of insulinZ79.5Long term (current) use of steroidshas subcodesZ79.6Long term (current) use of immunomodulators and immunosuppressantshas subcodesZ79.8Other long term (current) drug therapyhas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99).

Z77-Z99 Parent Instructions

Code Also
  • any follow-up examination (Z08-Z09)

Instructional Notes

Includes
  • long term (current) drug use for prophylactic purposes
Excludes2(Not included here. Code separately if applicable.)
  • drug abuse and dependence (F11-F19)
  • drug use complicating pregnancy, childbirth, and the puerperium (O99.32-)
Code Also
  • any therapeutic drug level monitoring (Z51.81)

Clinical Hierarchy

BillableHas subcodes
CH21Factors influencing health status and contact with health services (Z00-Z99)
Z77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
Z79Long term (current) drug therapyNot billable
Z79.0Long term (current) use of anticoagulants and antithrombotics/antiplateletsSubcodes
Z79.1Long term (current) use of non-steroidal anti-inflammatories (NSAID)Billable
Z79.2Long term (current) use of antibioticsBillable
Z79.3Long term (current) use of hormonal contraceptivesBillable
Z79.4Long term (current) use of insulinBillable
Z79.5Long term (current) use of steroidsSubcodes
Z79.6Long term (current) use of immunomodulators and immunosuppressantsSubcodes
Z79.8Other long term (current) drug therapySubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Z79:

blockZ77-Z99
Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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