Adverse effect of opium, sequela

This code describes a long-term or residual condition resulting from an adverse effect of opium. This means the patient experienced an undesirable reaction to opium, and now, after the acute phase has passed, they are left with a persistent health problem directly attributable to that adverse effect.

Use this code when documenting a chronic or permanent health issue that developed as a direct consequence of an adverse reaction to opium. This applies to situations where the initial adverse effect has resolved, but a lasting sequela, such as permanent organ damage or neurological impairment, remains.

• Always sequence this code after the code describing the specific sequela (e.g., chronic liver failure, persistent neuropathy).
• Ensure documentation clearly links the current chronic condition to a past adverse effect of opium.
• Distinguish from acute adverse effects, which would use a different seventh character.