ICD-10-CM Code W99.XXXS

Exposure to other man-made environmental factors, sequela

Version 2020 Billable Code POA Exempt

Valid for Submission

W99.XXXS is a billable code used to specify a medical diagnosis of exposure to other man-made environmental factors, sequela. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code W99.XXXS might also be used to specify conditions or terms like accident - pressure in aircraft or accident due to pressure changes in diving or accident due to sudden change in air pressure in aircraft or accident due to sudden loss of aircraft cabin pressure or exposure to rapid decompression. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

ICD-10:W99.XXXS
Short Description:Exposure to other man-made environmental factors, sequela
Long Description:Exposure to other man-made environmental factors, sequela

Synonyms

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

  • Accident - pressure in aircraft
  • Accident due to pressure changes in diving
  • Accident due to sudden change in air pressure in aircraft
  • Accident due to sudden loss of aircraft cabin pressure
  • Exposure to rapid decompression

Present on Admission (POA)

W99.XXXS 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 W99.XXXS to ICD-9

  • E929.5 - Late eff environment acc (Approximate Flag)

Code Classification

  • External causes of morbidity and mortality (V01–Y98)
    • Exposure to electric current, radiation and extreme ambient air temperature and pressure (W85-W99)
      • Exposure to other man-made environmental factors (W99)

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