2024 ICD-10-CM Diagnosis Code Z79.899

Other long term (current) drug therapy

ICD-10-CM Code:
Z79.899
ICD-10 Code for:
Other long term (current) drug therapy
Is Billable?
Yes - Valid for Submission
Code Navigator:

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)

Z79.899 is a billable diagnosis code used to specify a medical diagnosis of other long term (current) drug therapy. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Inhaler technique - good
  • Long term current use of drug therapy for attention deficit hyperactivity disorder
  • Long term methotrexate user
  • Long-term current use of acitretin
  • Long-term current use of ambrisentan
  • Long-term current use of amiodarone
  • Long-term current use of anakinra
  • Long-term current use of anticonvulsant
  • Long-term current use of antidepressant medication
  • Long-term current use of antipsychotic medication
  • Long-term current use of antiviral agent
  • Long-term current use of anxiolytic medication
  • Long-term current use of aralen
  • Long-term current use of benzodiazepine
  • Long-term current use of clozapine
  • Long-term current use of deferasirox
  • Long-term current use of diuretic
  • Long-term current use of drug therapy
  • Long-term current use of erythropoiesis stimulating therapy
  • Long-term current use of felbamate
  • Long-term current use of filgrastim
  • Long-term current use of growth hormone
  • Long-term current use of high dose acetaminophen
  • Long-term current use of hydroxychloroquine
  • Long-term current use of isotretinoin
  • Long-term current use of levothyroxine
  • Long-term current use of lithium
  • Long-term current use of medicinal gold
  • Long-term current use of mercaptopurine
  • Long-term current use of natalizumab
  • Long-term current use of penicillamine
  • Long-term current use of proton pump inhibitor therapy
  • Long-term current use of retinoid
  • Long-term current use of stimulant
  • Long-term current use of tacrolimus
  • Long-term current use of tocilizumab
  • Long-term current use of ustekinumab
  • Long-term current use of vedolizumab
  • On injectable neuroleptic
  • On injectable phenothiazine
  • On lithium
  • Taking medication for chronic disease
  • Taking multiple medications for chronic disease

Clinical Classification

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Present on Admission (POA)

Z79.899 is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here.

CMS POA Indicator Options and Definitions

POA IndicatorReason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert Z79.899 to ICD-9-CM

  • ICD-9-CM Code: V58.69 - Long-term use meds NEC
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.