Poisoning by histamine H2-receptor blockers, acc, sequela

This code signifies a long-term or residual effect resulting from an accidental overdose or poisoning by histamine H2-receptor blockers. These medications are commonly used to reduce stomach acid. The sequela could manifest as chronic organ damage, persistent neurological issues, or other lasting health problems directly attributable to the initial poisoning event.

Apply this code when documenting a patient presenting with a current condition that is a direct consequence of a past, unintentional poisoning by an H2-receptor blocker. This is used for follow-up care or treatment of the chronic effects, not for the initial acute poisoning episode. Examples include chronic kidney disease or persistent liver dysfunction that developed after the acute poisoning.

• Always sequence this sequela code after the code for the specific residual condition being treated.
• Ensure documentation clearly links the current condition to the past accidental H2-receptor blocker poisoning.
• Do not use this code for acute poisoning events; instead, use the appropriate acute poisoning code from the T47.0X1 category.