Z91.09
BillableOther allergy status, other than to drugs and biological substances
Z91.09 is the ICD-10-CM code for Other allergy status, other than to drugs and biological substances. It is a billable, specific code valid for reimbursement.
Z00-Z99 Factors influencing health status and contact with health services
What this means — in plain language
MedlinePlus · NIHAn allergy is a reaction by your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing. Substances that often cause reactions are: Pollen Dust mites Mold spores Pet dander Food Insect stings Medicines Normally, your immune system fights germs. It is your body's defense system. In most allergic reactions, however, it is responding to a…
Read more about Allergy at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Frequently asked questions
- What is ICD-10 code Z91.09?
- Z91.09 is the ICD-10-CM code for "Other allergy status, other than to drugs and biological substances". It falls under Z00-Z99 Factors influencing health status and contact with health services.
- Is Z91.09 a billable code?
- Yes — Z91.09 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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