Question 1

Is T78.129 a billable ICD-10 code?

Accepted Answer

Yes, T78.129 is a valid billable ICD-10-CM code for other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified. It can be used for medical billing and reimbursement purposes.

Question 2

What does ICD-10 code T78.129 mean?

Accepted Answer

ICD-10-CM code T78.129 represents Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified. This code is part of the International Classification of Diseases, 10th Revision, Clinical Modification used for medical coding and billing in the United States.

Question 3

When was ICD-10 code T78.129 introduced?

Accepted Answer

Code T78.129 was added to ICD-10-CM in fiscal year 2026. ICD-10-CM codes are updated annually by the Centers for Medicare & Medicaid Services (CMS) to reflect advances in medical knowledge and clinical practice.

Question 4

What is the parent category for ICD-10 code T78.129?

Accepted Answer

The parent category for T78.129 is T78.12 (Other adverse food reaction due to eggs). This hierarchical classification helps organize related diagnoses for more accurate coding.

Question 5

Does T78.129 require a 7th character extension?

Accepted Answer

Yes, T78.129 requires a 7th character to specify the encounter type. Available extensions include: A (initial encounter), D (subsequent encounter), S (sequela). Use "X" as a placeholder to fill empty positions before the 7th character (e.g., T78.129XXA for initial encounter). The extension indicates whether this is an initial visit, follow-up, or treatment for a late effect.

T78.129A2026

Excludes13Not coded together

Excludes29Not included here

Use Additional Code2Add code for detail

Notes2Additional information

Also Known As1Alternative terms

7th Character Extensions3Encounter type specifiers

Is T78.129 a billable ICD-10 code?

What does ICD-10 code T78.129 mean?

When was ICD-10 code T78.129 introduced?

What is the parent category for ICD-10 code T78.129?

Does T78.129 require a 7th character extension?