L51
Non-billableErythema multiforme
Erythema multiforme
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •lipomelanotic reticulosisI89.8
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •systemic connective tissue disordersM30-M36
- •viral wartsB07
Use Additional Code
Additional codes that should follow this code
Child Codes (6)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(13)
UMLS
- EM - Erythema multiformeC0014742
- Erythaema polymorpheC0014742
- Erythema MultiformeC0014742
- Erythema multiformeC0014742
- Erythema multiforme (disorder)C0014742
- Erythema multiforme, unspecifiedC0014742
- Erythema polymorpheC0014742
- Oral erythema multiformeC0014742
- Target lesionC0014742
- erythema multiformeC0014742
- erythema multiformesC0014742
- erythema polymorpheC0014742
- multiforme erythemaC0014742
Frequently Asked Questions
What is the ICD-10 code for erythema multiforme?
The ICD-10-CM code for erythema multiforme is L51. The full clinical description is "Erythema multiforme". L51 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code L51 mean?
ICD-10-CM code L51 represents “Erythema multiforme”. It is classified under Chapter 12: Diseases of the Skin and Subcutaneous Tissue and is a non-billable header code. Use a more specific child code for billing purposes.
Is L51 a billable code?
No, L51 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 6 child codes under L51.
What chapter is L51 in?
L51 is in Chapter 12: Diseases of the Skin and Subcutaneous Tissue (codes L00-L99).
What codes cannot be used with L51?
L51 has Excludes1 notes indicating codes that cannot be used together with it, including: Lyme disease (A69.2-); rosacea (L71.-); staphylococcal scalded skin syndrome (L00); and 1 more.
What are the subcategories under L51?
L51 has 6 child codes, including: L51.0 (Nonbullous erythema multiforme), L51.1 (Stevens-Johnson syndrome), L51.2 (Toxic epidermal necrolysis [Lyell]), L51.3 (Stevens-Johnson synd-tox epdrml necrolysis overlap syndrome), and 2 more.
Are additional codes required with L51?
Yes, when using L51, also report: adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).
What are the UMLS CUIs for L51?
L51 is linked to 1 UMLS Concept Unique Identifier: C0014742. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does L51 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like erythema multiforme affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of L51?
L51 maps to the ICD-11 code: EB12.Z (Erythema multiforme, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.