Poisoning by methadone, intentional self-harm, sequela

This code signifies a long-term consequence or complication arising from a deliberate act of self-poisoning with methadone. It indicates that the patient is experiencing residual effects directly attributable to a past intentional methadone overdose. These sequelae can manifest in various organ systems, depending on the severity and duration of the initial poisoning.

Apply this code when documenting a patient presenting with chronic health issues, organ damage, or persistent neurological deficits that are definitively linked to a previous intentional methadone overdose. This code is appropriate for follow-up encounters where the acute poisoning event has resolved, but its lasting impact is still being managed. It should be used when the patient is no longer in the acute phase of poisoning.

• Always sequence this code after the code(s) identifying the specific sequela(e) being treated (e.g., chronic liver failure, anoxic brain injury).
• Ensure documentation clearly establishes the causal link between the current condition and the past intentional methadone poisoning.
• Do not use this code for acute methadone poisoning; instead, use the appropriate acute poisoning code with the 7th character for initial or subsequent encounter.