ICD-10-CM Code Z99.81

Dependence on supplemental oxygen

Version 2020 Billable Code Unacceptable Principal Diagnosis POA Exempt

Valid for Submission

Z99.81 is a billable code used to specify a medical diagnosis of dependence on supplemental oxygen. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code Z99.81 might also be used to specify conditions or terms like dependence on continuous supplemental oxygen, dependence on nocturnal oxygen therapy, dependence on supplemental oxygen, dependence on supplemental oxygen when ambulating, equipment in use, home oxygen supply, etc The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

The code Z99.81 describes a circumstance which influences the patient's health status but not a current illness or injury. The code is unacceptable as a principal diagnosis.

ICD-10:Z99.81
Short Description:Dependence on supplemental oxygen
Long Description:Dependence on supplemental oxygen

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 Z99.81:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Dependence on long-term oxygen

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 Z99.81 are found in the index:


Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

  • Unacceptable principal diagnosis - There are selected codes that describe a circumstance which influences an individual’s health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Synonyms

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

  • Dependence on continuous supplemental oxygen
  • Dependence on nocturnal oxygen therapy
  • Dependence on supplemental oxygen
  • Dependence on supplemental oxygen when ambulating
  • Equipment in use
  • Home oxygen supply
  • Home oxygen supply started
  • Patient on oxygen
  • Requires continuous home oxygen supply
  • Requires oxygen therapy during exercise

Present on Admission (POA)

Z99.81 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 Z99.81 to ICD-9

  • V46.2 - Depend-supplement oxygen

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)
      • Dependence on enabling machines and devices, NEC (Z99)

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

Information for Patients


Oxygen Therapy

Oxygen therapy is a treatment that provides you with extra oxygen. Oxygen is a gas that your body needs to function. Normally, your lungs absorb oxygen from the air you breathe. But some conditions can prevent you from getting enough oxygen.

You may need oxygen if you have

  • COPD (chronic obstructive pulmonary disease)
  • Pneumonia
  • A severe asthma attack
  • Late-stage heart failure
  • Cystic fibrosis
  • Sleep apnea

The oxygen comes through nasal prongs, a mask, or a breathing tube. If you have a chronic problem, you may have a portable oxygen tank or a machine in your home.

A different kind of oxygen therapy is called hyperbaric oxygen therapy. It uses oxygen at high pressure to treat wounds and serious infections.

NIH: National Heart, Lung, and Blood Institute


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