T78.1
Non-billableOther adverse food reactions, not elsewhere classified
T78.1 is the ICD-10-CM code for Other adverse food reactions, not elsewhere classified. It is a non-billable category code — use a more specific child code such as T78.11 for billing.
S00-T88 Injury, poisoning and certain other consequences of external causes
What this means — in plain language
MedlinePlus · NIHWhat is a food allergy? A food allergy is an abnormal immune system reaction to certain foods. Your immune system normally protects you from germs. But if you have a food allergy, your immune system mistakenly reacts to certain foods as if they were harmful. This reaction is usually mild. But in some cases, it can be serious or even life-threatening. A food intolerance is different than a food allergy. If you have a…
Read more about Food Allergy at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Excludes1 — not coded here
Excludes2 — not included here
Use additional code
- •code to identify the type of reaction, if applicable
Frequently asked questions
- What is ICD-10 code T78.1?
- T78.1 is the ICD-10-CM code for "Other adverse food reactions, not elsewhere classified". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
- Is T78.1 a billable code?
- No — T78.1 is a non-billable header code. Use a more specific child code (such as T78.11) for billing.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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