Hives ICD-10 Codes: Urticaria Diagnosis Codes L50.0 to L50.9
In the ICD-10-CM system, urticaria (hives) is coded in category L50. Choosing the right code depends on the type of hives documented by the clinician. This guide lists the main codes. Codes are updated each October, so always confirm in the current official code set.
Urticaria ICD-10 Codes (L50)
| Code | Description |
|---|---|
| L50.0 | Allergic urticaria |
| L50.1 | Idiopathic urticaria |
| L50.2 | Urticaria due to cold and heat |
| L50.3 | Dermatographic urticaria |
| L50.4 | Vibratory urticaria |
| L50.5 | Cholinergic urticaria |
| L50.6 | Contact urticaria |
| L50.8 | Other urticaria, including chronic and recurrent |
| L50.9 | Urticaria, unspecified |
Related Codes
- T78.3XXA: angioedema, initial encounter
- D84.1: defects in the complement system, including hereditary angioedema
- L56.3: solar urticaria
See angioedema and hereditary angioedema.
Choosing the Right Code
Allergic urticaria (L50.0) requires a documented allergic cause. Many chronic cases are coded L50.8 or L50.1 depending on documentation. Coding should always follow the clinician’s documentation and current official guidelines; this page is educational and not coding advice. Learn about the types of hives.
When to Call 911
Call 911 or go to the nearest emergency room right away if hives come with trouble breathing, wheezing, tightness in the throat, swelling of the tongue or lips, dizziness or fainting. These can be signs of anaphylaxis, a severe allergic reaction that needs immediate treatment.
When to See a Doctor
See a doctor if your symptoms last more than a few days, keep coming back, cover large areas, or interfere with sleep or daily life. At the Hives Treatment Center in San Francisco, Dr. Tiffany Young sees patients with hives and urticaria through online and in-person visits.
Frequently Asked Questions About Hives ICD-10
What is the ICD-10 code for hives?
L50.9 is urticaria, unspecified; more specific codes exist.
What is the ICD-10 code for chronic urticaria?
Commonly L50.8, though coding depends on documentation.
Do codes change?
Yes, ICD-10-CM codes are updated each October.
Get Relief for Your Hives
Need a diagnosis, not just a code? A specialist can help. Visit our hives treatment page to see the latest treatment options for your outbreak.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis or treatment. If you think you are having a medical emergency, call 911.
