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ICDMine.com › Browse ICD-10-CM Codes › Ch. 19: Injury, poisoning and certain other consequences of external causes (S00-T88) › Other and unspecified effects of external causes (T66-T78) › T78 Adverse effects, not elsewhere classified › T78.4

T78.4Other and unspecified allergy

ICD-10-CM category (non-billable header) code — part of Other and unspecified effects of external causes (T66-T78)

Code Details

BillableNo — use a more specific child code
ChapterChapter 19: Injury, poisoning and certain other consequences of external causes (S00-T88)
SectionOther and unspecified effects of external causes (T66-T78)
Parent codeT78 — Adverse effects, not elsewhere classified

Coding Notes

Excludes1 (never code both together)

  • specified types of allergic reaction such as:
  • allergic diarrhea (K52.29)
  • allergic gastroenteritis and colitis (K52.29)
  • dermatitis (L23-L25, L27.-)
  • food protein-induced enterocolitis syndrome (K52.21)
  • food protein-induced enteropathy (K52.22)
  • hay fever (J30.1)

Subcategories (3)

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