Adverse effect of expectorants, sequela

This code indicates a long-term or residual condition resulting from a past adverse reaction to an expectorant medication. This means the immediate adverse effect has resolved, but a lasting health problem remains due to that prior event.

Apply this code when documenting a patient's current health issue that is a direct consequence of an adverse effect from an expectorant, and the original adverse effect is no longer active. Examples include chronic organ damage or persistent neurological deficits attributed to a previous expectorant-induced toxicity.

• Always sequence this code after the code for the specific sequela (e.g., chronic kidney disease, peripheral neuropathy).
• Ensure documentation clearly links the current condition to a past adverse effect of an expectorant.
• Do not use for acute adverse effects; those require codes from the T36-T50 range with a 5th or 6th character other than 'S'.