Z91.011

Z91.011: Allergy to milk products

Non-billable headerICD-10-CM

Z91.011 is a non-billable header ICD-10-CM code for allergy to milk products. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

lactose intolerance (E73.-)

Excludes2 inherited from the categories above Z91.011

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 Z91.011

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

Z91.0111Allergy to milk products with tolerance to baked milk
Z91.0112Allergy to milk products with reactivity to baked milk

Risk adjustment

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

Code history

deletedFY2024-FY2027
Allergy to milk products

Code to one of these instead Z91.011

3 child codes. Green means billable.