Poisoning by antiasthmatics, undetermined, sequela

This code indicates a long-term health condition or complication arising from a past poisoning event involving antiasthmatic medications, where the intent of the poisoning (e.g., accidental, intentional self-harm) could not be determined. It signifies that the acute phase of the poisoning has resolved, but residual effects persist.

Use this code when documenting a chronic health problem directly attributable to a previous antiasthmatic poisoning of unknown intent. This applies to follow-up encounters for conditions like persistent organ damage, neurological deficits, or other lasting sequelae that are a direct consequence of the original poisoning.

• Always sequence this sequela code first, followed by codes for the specific residual condition(s) being treated.
• Ensure documentation clearly links the current condition to the past antiasthmatic poisoning.
• Do not use this code for the initial or acute phase of the poisoning; use the appropriate acute poisoning code with the 7th character "A" or "D" instead.