ICD-10-CM > Z00-Z99 > Z77-Z99 > Z91 > Z91.0 > Z91.01 > Z91.012 Z91.012 Allergy to eggs Non-Billable/Non-Specific Codes Z91.0120Allergy to eggs, unspecifiedZ91.0121Allergy to eggs with tolerance to baked eggZ91.0122Allergy to eggs with reactivity to baked egg