Z91.011
Allergy to milk products
Z91.011 is a non-billable ICD-10-CM code header for allergy to milk products. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are Z91.0110 Allergy to milk products, unspecified; Z91.0111 Allergy to milk products with tolerance to baked milk and Z91.0112 Allergy to milk products with reactivity to baked milk. Its coding notes include a Code also instruction, 1 Excludes1 entry and 7 Excludes2 entries.
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
Also from chapter/block level (1 note)
- any follow-up examination (Z08-Z09)
Excludes1
Not coded here. The listed conditions generally should not be reported together.
- lactose intolerance (E73.-)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- Allergy status to drugs, medicaments, and biological substances (Z88.-)
Notes
Also from chapter/block level (3 notes)
- Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
- (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
- (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.