T78.120
Non-billableOther adverse food reaction due to egg with tolerance to baked egg
T78.120 is the ICD-10-CM code for Other adverse food reaction due to egg with tolerance to baked egg. It is a non-billable category code — use a more specific child code such as T78.120A 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
- •Other adverse food reaction due to egg with reactivity to baked egg (T78.121)
Frequently asked questions
- What is ICD-10 code T78.120?
- T78.120 is the ICD-10-CM code for "Other adverse food reaction due to egg with tolerance to baked egg". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
- Is T78.120 a billable code?
- No — T78.120 is a non-billable header code. Use a more specific child code (such as T78.120A) for billing.
- What are the subcodes of T78.120?
- T78.120 has 3 more specific child codes, including T78.120A, T78.120D, T78.120S.
- What is excluded from T78.120?
- Excludes1 (not coded here): Other adverse food reaction due to egg with reactivity to baked egg (T78.121).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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