Other adverse food reactions, NEC, sequela

This code signifies the long-term or residual effects of an adverse reaction to food that is not an allergy and is not classified elsewhere. These are conditions that persist after the acute phase of the food reaction has resolved, indicating a lasting impact on the patient's health.

Use this code when documenting chronic or permanent health issues directly resulting from a past adverse food reaction, such as persistent digestive problems, skin conditions, or neurological symptoms, where the acute event is no longer present. It is appropriate for follow-up encounters addressing these lingering sequelae.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic gastritis, dermatitis).
• Ensure documentation clearly links the current condition to a previous adverse food reaction.
• Verify that the adverse food reaction is not an allergy (T78.0- or T78.10-) and is not classified more specifically elsewhere.