L51: Erythema multiforme
Codes under L51 (Erythema multiforme). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| L51.0 | Nonbullous erythema multiforme | ✓ |
| L51.0 | Nonbullous erythema multiforme | ✓ |
| L51.1 | Stevens-Johnson syndrome | ✓ |
| L51.1 | Stevens-Johnson syndrome | ✓ |
| L51.2 | Toxic epidermal necrolysis [Lyell] | ✓ |
| L51.2 | Toxic epidermal necrolysis [Lyell] | ✓ |
| L51.3 | Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome | ✓ |
| L51.3 | Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome | ✓ |
| L51.8 | Other erythema multiforme | ✓ |
| L51.8 | Other erythema multiforme | ✓ |
| L51.9 | Erythema multiforme, unspecified | ✓ |
| L51.9 | Erythema multiforme, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code L51?
L51 is an ICD-10-CM category covering Erythema multiforme. It contains 12 more specific diagnosis codes, 12 of which are billable.
Is L51 a billable code?
No — L51 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example L51.0 — Nonbullous erythema multiforme). 12 of the 12 codes under L51 are billable.
What codes fall under L51?
L51 includes L51.0, L51.0, L51.1, L51.1, L51.2, plus 7 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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