Unsp foreign body in esophagus causing other injury, sequela

This code describes a long-term complication or residual effect stemming from an unspecified foreign object that was previously lodged in the esophagus, resulting in an injury other than obstruction or perforation. The original acute injury has resolved, but the patient continues to experience a related issue.

This code is appropriate for documenting a patient presenting with a chronic condition directly attributable to a past esophageal foreign body injury, where the specific nature of the foreign body is not documented. Examples include chronic inflammation, stricture formation, or persistent dysphagia that developed as a sequela of the initial event.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela (e.g., K22.2 for esophageal obstruction).
• Ensure documentation clearly links the current condition to a past esophageal foreign body event.
• Do not use this code for acute foreign body encounters; those require codes from the T18.10- series without the "S" seventh character.