Z91.09
Billable codeOther allergy status, other than to drugs and biological substances
The ICD-10 code for other allergy status, other than to drugs and biological substances is Z91.09.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- Z91.01Food allergy statusnon-billable header
- Z91.02Food additives allergy status
- Z91.03Insect allergy statusnon-billable header
- Z91.04Nonmedicinal substance allergy statusnon-billable header
- Z91.09Other allergy status, other than to drugs and biological substances
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- V1509Approximate match
Associated MS-DRGs
Z91.09 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.