Is Z91.011 a billable code?
No. Z91.011 is a header code that groups 3 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
Z91.011: Allergy to milk products
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
Z91.011 groups related diagnoses under allergy to milk products. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under Z91.011
- Z91.0110Allergy to milk products, unspecified
- Z91.0111Allergy to milk products with tolerance to baked milk
- Z91.0112Allergy to milk products with reactivity to baked milk
Other codes in Z91.01 Food allergy status
Z91.011 questions
What does Z91.011 mean?
Z91.011 is the ICD-10-CM code for Allergy to milk products. It is in chapter 22, Factors influencing health status and contact with health services (Z00-Z99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.