Urticaria and erythema
37 codes in this section
About Section L49-L54
Section L49-L54 (L49-L54) covers urticaria and erythema. It sits within the Diseases of the skin and subcutaneous tissue chapter (L00-L99). This section contains 37 ICD-10-CM codes, 33 billable diagnoses you can submit on a claim, and 4 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in L49-L54
Grouped by 3-character root code. Click any code for full detail.
| L49.0 | Exfoliation due to erythematous condition involving less than 10 percent of body surface | Billable |
| L49.1 | Exfoliation due to erythematous condition involving 10-19 percent of body surface | Billable |
| L49.2 | Exfoliation due to erythematous condition involving 20-29 percent of body surface | Billable |
| L49.3 | Exfoliation due to erythematous condition involving 30-39 percent of body surface | Billable |
| L49.4 | Exfoliation due to erythematous condition involving 40-49 percent of body surface | Billable |
| L49.5 | Exfoliation due to erythematous condition involving 50-59 percent of body surface | Billable |
| L49.6 | Exfoliation due to erythematous condition involving 60-69 percent of body surface | Billable |
| L49.7 | Exfoliation due to erythematous condition involving 70-79 percent of body surface | Billable |
| L49.8 | Exfoliation due to erythematous condition involving 80-89 percent of body surface | Billable |
| L49.9 | Exfoliation due to erythematous condition involving 90 or more percent of body surface | Billable |
| L50.0 | Allergic urticaria | Billable |
| L50.1 | Idiopathic urticaria | Billable |
| L50.2 | Urticaria due to cold and heat | Billable |
| L50.3 | Dermatographic urticaria | Billable |
| L50.4 | Vibratory urticaria | Billable |
| L50.5 | Cholinergic urticaria | Billable |
| L50.6 | Contact urticaria | Billable |
| L50.8 | Other urticaria | Billable |
| L50.9 | Urticaria, unspecified | Billable |
| L51.0 | Nonbullous erythema multiforme | Billable |
| L51.1 | Stevens-Johnson syndrome | Billable |
| L51.2 | Toxic epidermal necrolysis [Lyell] | Billable |
| L51.3 | Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome | Billable |
| L51.8 | Other erythema multiforme | Billable |
| L51.9 | Erythema multiforme, unspecified | Billable |
| L53.0 | Toxic erythema | Billable |
| L53.1 | Erythema annulare centrifugum | Billable |
| L53.2 | Erythema marginatum | Billable |
| L53.3 | Other chronic figurate erythema | Billable |
| L53.8 | Other specified erythematous conditions | Billable |
| L53.9 | Erythematous condition, unspecified | Billable |
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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