ICD-10-CM Code Z79

Long term (current) drug therapy

Version 2020 Non-Billable Code

Not Valid for Submission

Z79 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of long term (current) drug therapy. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

Short Description:Long term (current) drug therapy
Long Description:Long term (current) drug therapy

Consider the following ICD-10 codes with a higher level of specificity:

  • Z79.0 - Long term (current) use of anticoagulants and antithrombotics/antiplatelets
  • Z79.01 - Long term (current) use of anticoagulants
  • Z79.02 - Long term (current) use of antithrombotics/antiplatelets
  • Z79.1 - Long term (current) use of non-steroidal anti-inflammatories (NSAID)
  • Z79.2 - Long term (current) use of antibiotics
  • Z79.3 - Long term (current) use of hormonal contraceptives
  • Z79.4 - Long term (current) use of insulin
  • Z79.5 - Long term (current) use of steroids
  • Z79.51 - Long term (current) use of inhaled steroids
  • Z79.52 - Long term (current) use of systemic steroids
  • Z79.8 - Other long term (current) drug therapy
  • Z79.81 - Long term (current) use of agents affecting estrogen receptors and estrogen levels
  • Z79.810 - Long term (current) use of selective estrogen receptor modulators (SERMs)
  • Z79.811 - Long term (current) use of aromatase inhibitors
  • Z79.818 - Long term (current) use of other agents affecting estrogen receptors and estrogen levels
  • Z79.82 - Long term (current) use of aspirin
  • Z79.83 - Long term (current) use of bisphosphonates
  • Z79.84 - Long term (current) use of oral hypoglycemic drugs
  • Z79.89 - Other long term (current) drug therapy
  • Z79.890 - Hormone replacement therapy
  • Z79.891 - Long term (current) use of opiate analgesic
  • Z79.899 - Other long term (current) drug therapy

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code Z79:


This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • long term (current) drug use for prophylactic purposes

Code Also

Code Also
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
  • any therapeutic drug level monitoring Z51.81

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
  • drug abuse and dependence F11 F19
  • drug use complicating pregnancy, childbirth, and the puerperium O99.32
  • long term current use of oral antidiabetic drugs Z79.84
  • long term current use of oral hypoglycemic drugs Z79.84

Code Classification

  • Factors influencing health status and contact with health services (Z00–Z99)
    • Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
      • Long term drug therapy (Z79) (current)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020