10ICD Code Hub

Z91.04

Header — not billable

Nonmedicinal substance allergy status

The ICD-10 code for nonmedicinal substance allergy status is Z91.04.

Z91.04 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 3 more specific codes below.

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

Child codes under Z91.04

Related codes in this category