ICD10Check
CheckerBrowseOpen

Z91.011

⚠ Non-billable (Header)

Allergy to milk products

Factors influencing health status and contact with health services (Z00-Z99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

Check This Code

❌ Excludes1

direct

Cannot be coded with Z91.011

  • • lactose intolerance (E73.-)

⚠️ Excludes2

inherited from Z91.01

Rules from parent category Z91.01: Food allergy status

  • • food additives allergy status (Z91.02)

Child Codes (3)

Z91.0110Allergy to milk products, unspecifiedZ91.0111Allergy to milk products with tolerance to baked milkZ91.0112Allergy to milk products with reactivity to baked milk

🧪 Validate Combinations

Add Z91.011 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeZ91.011
BillableNo — Header code
ParentZ91.01
CategoryFactors influencing health status and contact with health services (Z00-Z99)
Excludes11 rule(s)
Excludes21 note(s)
Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)