Z91.01Food allergy status

Z91.01 is the ICD-10-CM diagnosis code for food allergy status. It belongs to category Z91 (personal risk factors, not elsewhere classified), block Z77-Z99 (persons with potential health hazards related to family and personal history and certain conditions influencing health status) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.

Within Z91.0 (allergy status, other than to drugs and biological substances), Z91.01 is specifically for food allergy status. Related codes cover food additives allergy status (Z91.02), insect allergy status (Z91.03), nonmedicinal substance allergy status (Z91.04) and other allergy status, other than to drugs and biological substances (Z91.09).

To report this condition, pick the subcode that matches the documentation: Z91.010 (peanuts), Z91.011 (products), Z91.012 (eggs), Z91.013 (seafood), Z91.014 (meats) and Z91.018 (foods).

The conditions in its Excludes2 note aren't part of Z91.01, but may be coded alongside it if the patient has both: food additives allergy status (Z91.02).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.