Each 100 mg dose of acetylcysteine given by injection

This code represents the administration of acetylcysteine via injection, a medication primarily used as an antidote for acetaminophen overdose. It functions by replenishing glutathione stores, which are crucial for detoxifying the toxic metabolite of acetaminophen. It can also be used as a mucolytic agent in certain respiratory conditions, though this is less common for injectable forms.

This code is used when acetylcysteine is administered parenterally, typically intravenously, to treat or prevent hepatotoxicity following acute acetaminophen overdose. It may also be used in specific situations for severe mucolytic needs, such as in cystic fibrosis exacerbations or acute respiratory distress syndrome. Documentation should clearly indicate the reason for administration, the dosage given, and the route.

• Ensure the documentation specifies the injectable form and the dosage administered (100 mg increments).
• Do not confuse this with oral or inhaled acetylcysteine preparations, which are typically not separately billable or use different codes.
• Always link this drug administration to the appropriate diagnosis code, such as T39.1X1A for acetaminophen poisoning, accidental (initial encounter).