Poisoning by histamine H2-receptor blockers, assault, init

This code signifies a deliberate act of harm involving an overdose or toxic exposure to histamine H2-receptor blockers, such as cimetidine or ranitidine, with the intent to injure another person. The patient is experiencing the initial effects and treatment for this poisoning.

Apply this code when documentation clearly indicates a patient presenting with symptoms of H2-receptor blocker toxicity due to an assault. This includes situations where the substance was forcibly administered or covertly given with malicious intent. It is specifically for the initial phase of treatment.

• Always sequence this code first, followed by codes for specific manifestations of the poisoning.
• Ensure documentation explicitly states "assault" or similar intent; otherwise, consider accidental or undetermined intent codes.
• Do not use for adverse effects of properly administered H2-receptor blockers; those require different codes.