Urticaria and erythema (L49-L54)
chapter 12: Diseases of the Skin and Subcutaneous Tissue
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Instructional notes
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 L49-L54
L49-L54 can't be used on a claim. Pick a billable code below; grey headings group them.
- L49Exfoliation due to erythematous conditions according to extent of body surface involved
- L49.0Exfoliation due to erythematous condition involving less than 10 percent of body surface
- L49.1Exfoliation due to erythematous condition involving 10-19 percent of body surface
- L49.2Exfoliation due to erythematous condition involving 20-29 percent of body surface
- L49.3Exfoliation due to erythematous condition involving 30-39 percent of body surface
- L49.4Exfoliation due to erythematous condition involving 40-49 percent of body surface
- L49.5Exfoliation due to erythematous condition involving 50-59 percent of body surface
- L49.6Exfoliation due to erythematous condition involving 60-69 percent of body surface
- L49.7Exfoliation due to erythematous condition involving 70-79 percent of body surface
- L49.8Exfoliation due to erythematous condition involving 80-89 percent of body surface
- L49.9Exfoliation due to erythematous condition involving 90 or more percent of body surface
- L50Urticaria
- L50.0Allergic urticaria
- L50.1Idiopathic urticaria
- L50.2Urticaria due to cold and heat
- L50.3Dermatographic urticaria
- L50.4Vibratory urticaria
- L50.5Cholinergic urticaria
- L50.6Contact urticaria
- L50.8Other urticaria
- L50.9Urticaria, unspecified
- L51Erythema multiforme
- L51.0Nonbullous erythema multiforme
- L51.1Stevens-Johnson syndrome
- L51.2Toxic epidermal necrolysis [Lyell]
- L51.3Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome
- L51.8Other erythema multiforme
- L51.9Erythema multiforme, unspecified
- L52Erythema nodosum
- L53Other erythematous conditions
- L53.0Toxic erythema
- L53.1Erythema annulare centrifugum
- L53.2Erythema marginatum
- L53.3Other chronic figurate erythema
- L53.8Other specified erythematous conditions
- L53.9Erythematous condition, unspecified
- L54Erythema in diseases classified elsewhere
L49-L54 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Eczema
Eczema is a term for several different types of skin swelling. Eczema is also called dermatitis. Most types cause dry, itchy skin and rashes on the face, inside the elbows and behind the knees, and on the hands and feet. Scratching the skin can cause it to turn red, and to swell and itch even more.
Read more about eczema on MedlinePlusRashes
A rash is an area of irritated or swollen skin. Many rashes are itchy, red, painful, and irritated. Some rashes can also lead to blisters or patches of raw skin. Rashes are a symptom of many different medical problems. Other causes include irritating substances and allergies. Certain genes can make people more likely to get rashes.
Read more about rashes on MedlinePlus