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Inpatient Hospitalizations due to Unintentional Carbon Monoxide Poisoning by Year, New Jersey, 2000 to 2022

Indicator Report Data View Options

Why Is This Important?

Carbon monoxide (CO) is a colorless and odorless poisonous gas produced by the incomplete burning of solid, liquid and gaseous fuels. Unintentional CO exposure to people most frequently occurs due to improper ventilation, and or inhalation of exhaust fumes from vehicles, generators, gas furnaces or heaters. CO poisoning can also occur in combination with smoke inhalation from residential fires. While most CO poisoning can be prevented, every year more than 500 Americans die as a result of exposure to this toxic gas. Thousands of Americans annually need to get medical care for non-fatal CO poisonings. Symptoms of CO exposure may include: headache, fatigue, shortness of breath, nausea, dizziness and confusion. At high levels, CO poisoning causes loss of consciousness and death. Survivors of severe poisoning may suffer long-term neurological problems. CO poisoning can be prevented by the installation of CO detectors/alarms and the proper maintenance of heating systems.


Inpatient hospitalizations due to unintentional carbon monoxide (CO) poisoning, from fires, non-fire conditions, or unknown causes, in a geographic area in a time period. The ICD-9 discharge diagnosis E-codes used through September 2015 were: E890.0-E899.9 for fire-related hospitalization; E800-E848.9, E850-E869.9, E880-E888.9, E900-E928.9 for non-fire-related hospitalization; All records with a 986 code (carbon monoxide poisoning) with no associated E-code were classified as unknown. Beginning October 2015 and onward, ICD-10 code T58 was used (with exclusions for intentional and additional coding for fire and non-fire subcategories).

Data Notes

Data have been age-adjusted to the U.S. 2000 standard population.

Data Sources

How the Measure is Calculated

  • Numerator:

    Number of inpatient hospitalizations due to unintentional CO poisoning
  • Denominator:

    Estimated number of persons in the population

Data Issues

'''Overall Discharge Volume in 2020: ''' Hospital claim volume for the 2020 calendar year was markedly lower (19.9%) than for 2019, mostly due to the COVID-19 pandemic. This reduction was seen in both inpatient discharges (8.2% lower claim volume than 2019) and emergency department visits (27.3% lower claim volume than 2019). This was likely the result of hospital care being redirected to address the care for COVID-19 patients while elective surgeries and other outpatient care services were being postponed. '''ICD Coding between 2015 and 2016: ''' The nationwide switch from ICD-9-CM to ICD-10-CM hospital diagnosis coding on October 1, 2015 disrupted trends for some diseases and conditions. Interpret trend data in this report with caution. Also note that New Jersey's data for October through December, 2015 was recoded to ICD-9-CM so that entire year of data was coded the same way.

Related Health Objectives and Indicators

Environmental Public Health Tracking Indicator CMP-37

Description: Hospitalizations for carbon monoxide poisoning

Related Risk Factors Indicators:

Related Health Status Outcomes Indicators:

Health Topic Pages Related to: Inpatient Hospitalizations due to Unintentional Carbon Monoxide Poisoning

Indicator Data Last Updated On 05/23/2024, Published on 05/24/2024
Environmental Public Health Tracking Project, New Jersey Department of Health, PO Box 369, Trenton, NJ 08625-0369, e-mail: (