2020 ICD-10-CM Codes for Long term (current) drug therapy (Z79)

Instructional Notations

Includes Includes
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