T78.3
Billable codeAngioneurotic edema
The ICD-10 code for angioneurotic edema is T78.3.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Allergic angioedema
- Giant urticaria
- Quincke's edema
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- T78.0Anaphylactic reaction due to foodnon-billable header
- T78.1Other adverse food reactions, not elsewhere classifiednon-billable header
- T78.2Anaphylactic shock, unspecified
- T78.4Other and unspecified allergynon-billable header
- T78.8Other adverse effects, not elsewhere classified
- T78.3Angioneurotic edema