Y17.3: Poisoning by and exposure to carbon monoxide from other sources, undetermined intent

Poisoning by and exposure to carbon monoxide from other sources involves high levels of carbon monoxide gas originating from sources other than manufactured goods or natural fires. Carbon monoxide is an odorless, colorless, and tasteless gas that is harmful when inhaled in excessive amounts. Upon exposure, it interferes with the ability of red blood cells to transport oxygen to organs and tissues in the body. Early symptoms of poisoning may include headache, dizziness, weakness, upset stomach, vomiting, chest pain, confusion and flu-like symptoms. Over time, severe cases can lead to loss of consciousness, permanent brain damage, heart damage, and even death. The intent behind the exposure is undetermined, indicating that it may or may not be deliberate. This type of poisoning often occurs due to poor ventilation or maintenance of heating systems, car engines, or in enclosed places.