Allergy to milk products with reactivity to baked milk

This code signifies a patient's documented history of an allergic reaction to milk products, specifically when that reactivity persists even after the milk has been heated or baked into other foods. This indicates a more severe or persistent milk allergy compared to those who can tolerate baked milk.

Use this code for patients with a confirmed milk allergy where ingestion of baked milk products (e.g., cookies, muffins, bread containing milk) still triggers an allergic response. This is appropriate when the patient's medical record clearly distinguishes this type of milk allergy from one where baked milk is tolerated.

• Ensure documentation explicitly states reactivity to baked milk, not just general milk allergy.
• Differentiate from Z91.0111, which indicates tolerance to baked milk.
• This code is for a history of allergy; acute allergic reactions would be coded separately.