Urticaria
In Urticaria and erythema (L49-L54), chapter 12: Diseases of the Skin and Subcutaneous Tissue
9 billable codes under L50: none are a CC or MCC; none map to an HCC.
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Instructional notes
Excludes1: not coded here, use a different code
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers assigning pressure ulcer codes by site and stage, including unstageable, healing, healed, and progressing ulcers, and coding healing or progressing non-pressure chronic ulcers.
- Pressure ulcer stage codes (page 58)
- Non-Pressure Chronic Ulcers (page 60)
All codes under L50
L50 can't be used on a claim. Pick a billable code below; grey headings group them.
L50 MS-DRGs
As the principal diagnosis, the billable codes under L50 group to MS-DRG 606, 607, 791, or 793 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 606 Minor Skin Disorders with MCC (9 of 9 codes)
- DRG 607 Minor Skin Disorders without MCC (9 of 9 codes)
- DRG 791 Prematurity with Major Problems (1 of 9 codes)
- DRG 793 Full Term Neonate with Major Problems (1 of 9 codes)
Other codes that refer to L50
Notes on these codes point to L50.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Hives
Hives are red and sometimes itchy bumps on your skin. An allergic reaction to a drug or food usually causes them. Allergic reactions cause your body to release chemicals that can make your skin swell up in hives. People who have other allergies are more likely to get hives than other people. Other causes include infections and stress.
Read more about hives on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.