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ICD-10-CM Codes
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S00-T88
Injury, poisoning and certain other consequences of external causes
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T66-T78
Other and unspecified effects of external causes
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T78-
Adverse effects, not elsewhere classified
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2022 ICD-10-CM Diagnosis Code T78.3
2022 ICD-10-CM Diagnosis Code T78.3
Angioneurotic edema
2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
- T78.3 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
- The 2022 edition of ICD-10-CM T78.3 became effective on October 1, 2021.
- This is the American ICD-10-CM version of T78.3 - other international versions of ICD-10 T78.3 may differ.
Applicable To- Allergic angioedema
- Giant urticaria
- Quincke's edema
Type 1 ExcludesType 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as T78.3. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
The following code(s) above
T78.3 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
T78.3:
Clinical Information
- Recurring attacks of transient edema suddenly appearing in areas of the skin or mucous membranes
- Swelling involving the deep dermis, subcutaneous, or submucosal tissues, representing localized edema. Angioedema often occurs in the face, lips, tongue, and larynx.
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
Code annotations containing back-references to T78.3:
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Type 1 Excludes: L50, L50, L50, R60
ICD-10-CM Diagnosis Code L50
Urticaria
2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
Type 1 Excludes- allergic contact dermatitis (L23.-)
- angioneurotic edema (T78.3)
- giant urticaria (T78.3)
- hereditary angio-edema (D84.1)
- Quincke's edema (T78.3)
- serum urticaria (T80.6-)
- solar urticaria (L56.3)
- urticaria neonatorum (P83.8)
- urticaria papulosa (L28.2)
- urticaria pigmentosa (D47.01)
ICD-10-CM Diagnosis Code L50
Urticaria
2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
Type 1 Excludes- allergic contact dermatitis (L23.-)
- angioneurotic edema (T78.3)
- giant urticaria (T78.3)
- hereditary angio-edema (D84.1)
- Quincke's edema (T78.3)
- serum urticaria (T80.6-)
- solar urticaria (L56.3)
- urticaria neonatorum (P83.8)
- urticaria papulosa (L28.2)
- urticaria pigmentosa (D47.01)
ICD-10-CM Diagnosis Code L50
Urticaria
2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
Type 1 Excludes- allergic contact dermatitis (L23.-)
- angioneurotic edema (T78.3)
- giant urticaria (T78.3)
- hereditary angio-edema (D84.1)
- Quincke's edema (T78.3)
- serum urticaria (T80.6-)
- solar urticaria (L56.3)
- urticaria neonatorum (P83.8)
- urticaria papulosa (L28.2)
- urticaria pigmentosa (D47.01)
ICD-10-CM Diagnosis Code R60
Edema, not elsewhere classified
2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
ICD-10-CM Codes Adjacent To T78.3
T78.1 Other adverse food reactions, not elsewhere classified
T78.2 Anaphylactic shock, unspecified
T78.3
Angioneurotic edema
T78.4 Other and unspecified allergy
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.