T78.40 - Allergy, unspecified

  • Applicable to Allergy, unspecified
  • The 2025 edition of ICD10-CM T78.40 became effective on October 1, 2024.
  • This is the American ICD10-CM version of T78.40 - other international versions of ICD10 T78.40 may differ.
  • T78.40 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

 Inclusion Term

  • Allergic reaction NOS
  • Hypersensitivity NOS

The following codes above T78.40 contain annotation back-references that may be applicable to T78.40:

Chapter: S00-T88 Injury, poisoning and certain other consequences of external causes

Section: T66-T78 Other and unspecified effects of external causes

Category: T78 Adverse effects, not elsewhere classified

allergy icd 10
 
poisoning icd 10
 
Billable/Specific Code

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