Unsp foreign body in pharynx causing other injury, sequela

This code signifies a long-term or residual effect resulting from an unspecified foreign object previously lodged in the pharynx, which caused an injury other than choking or obstruction. The original foreign body is no longer present, but its past presence has led to ongoing health issues.

Use this code when documenting a patient presenting with a chronic condition or complication directly attributable to a past foreign body in the pharynx, where the specific type of foreign body is unknown. Examples include persistent inflammation, scarring, or nerve damage in the pharyngeal area, months or years after the foreign body was removed or passed.

• Always assign an additional code to describe the specific nature of the sequela (e.g., chronic pharyngitis, dysphagia).
• Ensure documentation clearly links the current condition to a past foreign body event in the pharynx.
• Do not use this code for acute foreign body encounters; those require codes from the T17.20 series without the "S" seventh character.