Adverse effect of 4-Aminophenol derivatives, sequela

This code signifies a long-term or residual condition resulting from a past adverse reaction to 4-aminophenol derivatives, such as acetaminophen. It indicates that the initial acute adverse effect has resolved, but a lasting health problem persists as a direct consequence.

Apply this code when documenting a chronic or permanent sequela directly attributable to a previous adverse effect from 4-aminophenol derivatives. Examples include chronic liver disease or kidney damage that developed after an acetaminophen overdose and is now a stable, ongoing condition. This code is used after the acute phase of the adverse event has passed.

• Always sequence the code for the specific sequela (e.g., chronic liver failure) first, followed by this code.
• Ensure documentation clearly links the current chronic condition to the past adverse drug event.
• Do not use this code for acute adverse effects; instead, use the appropriate acute adverse effect code (T39.1X5A or T39.1X5D).