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T78.3

⚠ Non-billable (Header)

Angioneurotic edema

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

⚠️ This is a category header code — not billable. Use a more specific child code below.

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Also Known As

Allergic angioedemaGiant urticariaQuincke's edema

❌ Excludes1

direct

Cannot be coded with T78.3

  • • serum urticaria (T80.6-)
  • • urticaria (L50.-)

⚠️ Excludes2

inherited from T78

Rules from parent category T78: Adverse effects, not elsewhere classified

  • • complications of surgical and medical care NEC (T80-T88)

Child Codes (3)

T78.3XXAAngioneurotic edema, initial encounterT78.3XXDAngioneurotic edema, subsequent encounterT78.3XXSAngioneurotic edema, sequela

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Code Information

CodeT78.3
BillableNo — Header code
ParentT78
CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)
Excludes12 rule(s)
Excludes21 note(s)
Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)