Anaphylactic reaction due to other food products, sequela

This code signifies a long-term or residual effect stemming from a past anaphylactic reaction caused by a food product other than those specifically categorized (e.g., peanuts, dairy, seafood). It indicates that the acute anaphylactic event has resolved, but the patient continues to experience a lasting health problem directly attributable to that prior reaction.

Apply this code when documenting a chronic condition or persistent symptom that is a direct consequence of a resolved anaphylactic episode due to an unspecified food product. Examples include chronic asthma exacerbated by the prior reaction, persistent dermatological issues, or long-term gastrointestinal problems. This code is appropriate for follow-up encounters addressing these sequelae.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic asthma, dermatitis).
• Ensure documentation clearly links the current condition to a past anaphylactic reaction from an "other food product."
• Do not use for acute anaphylactic reactions; those require codes from the T78.0- category without the "S" seventh character.