T78.3
T78.3: Angioneurotic edema
Non-billable headerICD-10-CM
T78.3 is a non-billable header ICD-10-CM code for angioneurotic edema. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category T78
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Allergic angioedema
- Giant urticaria
- Quincke's edema
Other codes that can never be billed with T78.3
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Alphabetic index entries that lead here
- Angioedema(allergic) (any site) (with urticaria)
- Angioneurotic edema(allergic) (any site) (with urticaria)
- Bannister's disease
- Quincke's disease or edema
- Allergy, allergic›angioneurotic edema
- Disease, diseased›Bannister's
- Edema, edematous›allergic
- Edema, edematous›angioneurotic(allergic) (any site) (with urticaria)
- Edema, edematous›circumscribed, acute
- Edema, edematous›essential, acute
- Edema, edematous›periodic
- Edema, edematous›Quincke's
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead T78.3
3 child codes. Green means billable.