Z91.011
Non-billableAllergy to milk products
Z91.011 is the ICD-10-CM code for Allergy to milk products. It is a non-billable category code — use a more specific child code such as Z91.0110 for billing.
Z00-Z99 Factors influencing health status and contact with health services
Excludes1 — not coded here
- •lactose intolerance (E73.-)
Frequently asked questions
- What is ICD-10 code Z91.011?
- Z91.011 is the ICD-10-CM code for "Allergy to milk products". It falls under Z00-Z99 Factors influencing health status and contact with health services.
- Is Z91.011 a billable code?
- No — Z91.011 is a non-billable header code. Use a more specific child code (such as Z91.0110) for billing.
- What are the subcodes of Z91.011?
- Z91.011 has 3 more specific child codes, including Z91.0110, Z91.0111, Z91.0112.
- What is excluded from Z91.011?
- Excludes1 (not coded here): lactose intolerance (E73.-).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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