ICD-10-CM Code Z79.899

Other long term (current) drug therapy

Version 2020 Replaced Code Billable Code POA Exempt

Valid for Submission

Z79.899 is a billable code used to specify a medical diagnosis of other long term (current) drug therapy. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code Z79.899 might also be used to specify conditions or terms like inhaler technique - good, long term current use of abatacept, long term current use of adalimumab therapy, long term current use of drug therapy for attention deficit hyperactivity disorder, long term methotrexate user, long-term current use of acitretin, etc The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

ICD-10:Z79.899
Short Description:Other long term (current) drug therapy
Long Description:Other long term (current) drug therapy

Replaced Code

This code was replaced in the 2020 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2019. This code was replaced for the FY 2020 (October 1, 2019 - September 30, 2020).

  • Z79.84 - Long term (current) use of oral hypoglycemic drugs

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code Z79.899 are found in the index:


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 abatacept
  • Long term current use of adalimumab therapy
  • 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 amiodarone
  • Long-term current use of anakinra
  • Long-term current use of antibiotic
  • 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 apremilast
  • Long-term current use of aralen
  • Long-term current use of azathioprine
  • Long-term current use of belimumab
  • Long-term current use of certolizumab pegol
  • Long-term current use of clozapine
  • Long-term current use of cyclophosphamide
  • Long-term current use of cyclosporine
  • 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 etanercept
  • Long-term current use of felbamate
  • Long-term current use of filgrastim
  • Long-term current use of golimumab
  • Long-term current use of growth hormone
  • Long-term current use of high dose acetaminophen
  • Long-term current use of immunosuppressive drug
  • Long-term current use of infliximab
  • Long-term current use of intravenous immune globulin
  • Long-term current use of isotretinoin
  • Long-term current use of leflunomide
  • Long-term current use of lenalidomide
  • Long-term current use of lithium
  • Long-term current use of medicinal gold
  • Long-term current use of mercaptopurine
  • Long-term current use of mycophenolate
  • Long-term current use of retinoid
  • Long-term current use of rituximab
  • Long-term current use of sirolimus
  • Long-term current use of tacrolimus
  • Long-term current use of tocilizumab
  • Long-term current use of tofacitinib
  • Long-term current use of ustekinumab
  • On injectable neuroleptic
  • On injectable phenothiazine
  • On lithium
  • Taking medication for chronic disease
  • Taking multiple medications for chronic disease

Diagnostic Related Groups

The ICD-10 code Z79.899 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.

  • 949 - AFTERCARE WITH CC/MCC
  • 950 - AFTERCARE WITHOUT CC/MCC

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 Indicator CodePOA Reason 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

  • V58.69 - Long-term use meds NEC (Approximate Flag)

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