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U.S. ICD-10-CM · FY 2027

T78.120 ICD-10-CM Code: Other adverse food reaction due to egg with tolerance to baked egg

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

T78.120

Other adverse food reaction due to egg with tolerance to baked egg

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where T78.120 sits

  1. 1

    Chapter 19

    Injury, poisoning and certain other consequences of external causes (S00-T88)

  2. 2

    Section

    Other and unspecified effects of external causes (T66-T78)

  3. 3

    Category T78

    Adverse effects, not elsewhere classified

  4. 4

    Subcategory T78.12

    Other adverse food reaction due to eggs

  5. 5

    Code T78.120

    Other adverse food reaction due to egg with tolerance to baked egg

More specific choices

Codes under T78.120

T78.120 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for T78.120.

Code first

No “code first” instruction is listed for T78.120.

Use additional code

No “use additional code” instruction is listed for T78.120.

Excludes1

Conditions that should not be reported together with this code.

  • Other adverse food reaction due to egg with reactivity to baked egg (T78.121)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for T78.120.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code T78.120 mean?

T78.120 is the FY 2027 U.S. ICD-10-CM code for “Other adverse food reaction due to egg with tolerance to baked egg.”

Is T78.120 a billable or specific ICD-10-CM code?

No. T78.120 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is T78.120 located in ICD-10-CM?

T78.120 is listed in Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88), within Other and unspecified effects of external causes (T66-T78) (T66–T78), under category T78, Adverse effects, not elsewhere classified and subcategory T78.12, Other adverse food reaction due to eggs.

What coding notes are listed for T78.120?

No inclusion terms are listed for T78.120 in this reference record. No code-first instruction is listed. Excludes1 notes: Other adverse food reaction due to egg with reactivity to baked egg (T78.121). No Excludes2 note is listed.

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