Billable / Specific Code
ICD-10-CM T78.129 is the diagnosis code for Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified. This code falls under the section "Other and unspecified effects of external causes" within Chapter 19 — Injury, poisoning and certain other consequences of external causes (S00-T88). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where T78.129 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, T78.129 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
T78.129 is the ICD-10-CM diagnosis code for "Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of T78.129 is T78.12 ("Other adverse food reaction due to eggs"). T78.129 provides a more specific classification within this category.
T78.129 is located in Section T66-T78 — "Other and unspecified effects of external causes" within Chapter 19 of the ICD-10-CM Tabular List.
Use T78.129 when the patients documented diagnosis matches "Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other adverse food reaction due to egg with baked egg tolerance/reactivity, unspecified is T78.129.
Yes, T78.129 can be used as a primary diagnosis code since it is billable and specific.
T78.129 is in Chapter 19 of the ICD-10-CM Tabular List.
Yes, T78.129 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.