MCMedicalCodingSoftware
Z91.012

Z91.012: Allergy to eggs

Non-billable headerICD-10-CM

Z91.012 is a non-billable header ICD-10-CM code for allergy to eggs. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2 inherited from the categories above Z91.012

Not part of this code, but both may be coded when both are present.

Written on Z91.01: Food allergy status

  • food additives allergy status (Z91.02)

Written on Z91.0: Allergy status, other than to drugs and biological substances

  • Allergy status to drugs, medicaments, and biological substances (Z88.-)

Written on Z91: Personal risk factors, not elsewhere classified

  • contact with and (suspected) exposures hazardous to health (Z77.-)
  • exposure to pollution and other problems related to physical environment (Z77.1-)
  • female genital mutilation status (N90.81-)
  • occupational exposure to risk factors (Z57.-)
  • personal history of physical injury and trauma (Z87.81, Z87.82-)

Other codes that can never be billed with Z91.012

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Z91.0121Allergy to eggs with tolerance to baked egg
  • Z91.0122Allergy to eggs with reactivity to baked egg

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

  • deletedFY2024-FY2027

    Allergy to eggs

Code to one of these instead Z91.012

3 child codes. Green means billable.

Other codes under Z91.01

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.