In simple words: This code represents complications due to anesthesia gases, either from an overdose, the wrong gas being used, an adverse reaction, or not enough gas being given.

This code encompasses poisoning by, adverse effects of, and underdosing of anesthetics and therapeutic gases.It includes adverse effects from correctly administered substances, poisoning by overdose, and poisoning by the wrong substance given or taken in error.It also includes underdosing from inadvertently or deliberately taking less of a substance than prescribed.

Example 1: A patient receives too much anesthetic gas during a surgical procedure, resulting in respiratory distress., A patient experiences an allergic reaction to a specific anesthetic gas, leading to skin rash and breathing difficulties., A patient receives an insufficient dose of anesthetic gas, causing them to wake up during surgery.

Documentation should include the type of anesthetic gas used, dosage administered, method of administration, patient response, and any adverse effects observed. If underdosing occurs, the reason and subsequent actions must be documented.If the wrong substance is given, the circumstances and corrective measures taken should be thoroughly explained.

** Excludes1: benzodiazepines (T42.4-), cocaine (T40.5-), complications of anesthesia during pregnancy (O29.-), complications of anesthesia during labor and delivery (O74.-), complications of anesthesia during the puerperium (O89.-), opioids (T40.0-T40.2-)