ICD-10 Diagnosis Code T78.3XXD

Angioneurotic edema, subsequent encounter

Diagnosis Code T78.3XXD

ICD-10: T78.3XXD
Short Description: Angioneurotic edema, subsequent encounter
Long Description: Angioneurotic edema, subsequent encounter
This is the 2017 version of the ICD-10-CM diagnosis code T78.3XXD

Code Classification
  • Injury, poisoning and certain other consequences of external causes
    • Other and unspecified effects of external causes (T66-T78)
      • Adverse effects, not elsewhere classified (T78)

Information for Medical Professionals

Information for Patients


Also called: Hypersensitivity

An allergy is a reaction by your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing. Substances that often cause reactions are

  • Pollen
  • Dust mites
  • Mold spores
  • Pet dander
  • Food
  • Insect stings
  • Medicines

Normally, your immune system fights germs. It is your body's defense system. In most allergic reactions, however, it is responding to a false alarm. Genes and the environment probably both play a role.

Allergies can cause a variety of symptoms such as a runny nose, sneezing, itching, rashes, swelling, or asthma. Allergies can range from minor to severe. Anaphylaxis is a severe reaction that can be life-threatening. Doctors use skin and blood tests to diagnose allergies. Treatments include medicines, allergy shots, and avoiding the substances that cause the reactions.

NIH: National Institute of Allergy and Infectious Diseases

  • Allergic reactions
  • Allergic rhinitis - self-care
  • Allergies
  • Allergies, asthma, and dust
  • Allergies, asthma, and molds
  • Allergy testing - skin
  • Angioedema
  • Antihistamines for allergies

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Also called: Dropsy

Edema means swelling caused by fluid in your body's tissues. It usually occurs in the feet, ankles and legs, but it can involve your entire body.

Causes of edema include

  • Eating too much salt
  • Sunburn
  • Heart failure
  • Kidney disease
  • Liver problems from cirrhosis
  • Pregnancy
  • Problems with lymph nodes, especially after mastectomy
  • Some medicines
  • Standing or walking a lot when the weather is warm

To keep swelling down, your health care provider may recommend keeping your legs raised when sitting, wearing support stockings, limiting how much salt you eat, or taking a medicine called a diuretic - also called a water pill.

  • Abdominal tap
  • Angioedema
  • Foot, leg, and ankle swelling
  • Pulmonary edema
  • Swelling

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