Poisn by mult unsp drug/meds/biol subst, slf-hrm, sequela

This code signifies a long-term consequence or residual effect stemming from a prior act of intentional self-poisoning involving a combination of various unidentifiable drugs, medications, or biological substances. It indicates that the acute phase of the poisoning has passed, but the patient continues to experience health problems directly attributable to that event.

Apply this code when documenting chronic conditions, permanent organ damage, or persistent neurological deficits that are a direct result of a past suicide attempt involving multiple unspecified substances. This is appropriate for follow-up visits where the focus is on managing these lasting effects, rather than the acute poisoning itself.

• Requires a seventh character "S" to indicate sequela, meaning the residual effect of a past injury or disease.
• Do not use for the initial acute poisoning event; instead, use the appropriate acute poisoning code with the "A" or "D" seventh character.
• Always sequence this code after the code for the specific sequela (e.g., chronic kidney disease due to poisoning).