L51.9
BillableErythema multiforme, unspecified
Erythema multiforme, unspecified
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Erythema iris
- Erythema multiforme major NOS
- Erythema multiforme minor NOS
- Herpes iris
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 period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- lipomelanotic reticulosis (I89.8)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- viral warts (B07.-)
Use Additional Code
Additional codes that should follow this code
- code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
Also Known As / Clinical Terms
SNOMED CT
- Erythema multiforme, dermal type22972008
- Herpes iris28664002
- EM - Erythema multiforme36715001
- Erythema multiforme36715001
- Target lesion36715001
- Coccidioidomycosis with erythema multiforme41030002
- Lip ulcer64143008
- Erythema of mucous membrane126486000
- Mucous membrane erythema126486000
- Erythema multiforme of pregnancy238820002
- Pregnancy dermatosis239101008
- Pregnancy eruption239101008
- Drug-induced erythema multiforme297942002
- Erythema multiforme due to malignancy403213004
- Erythema multiforme-induced ulceration of lips403441003
- Erythema multiforme co-occurrent with ulcer of oral mucous membrane707314000
- Erythema multiforme with oral ulceration707314000
- Gingival disease due to erythema multiforme713229006
- Erythema multiforme caused by virus762375006
- Erythema multiforme due to viral disease762375006
- Erythema multiforme provoked by viral infection762375006
- Erythema multiforme due to systemic fungal infection860800001
- Erythema multiforme due to Herpes simplex infection860869003
- Erythema multiforme provoked by Herpes simplex860869003
- Erythema multiforme due to Mycoplasma pneumoniae infection860870002
- Erythema multiforme provoked by Mycoplasma pneumoniae860870002
- Erythema multiforme due to bacterial infection1163528001
- Erythema multiforme provoked by bacterial infection1163528001
- EMPACT (erythema multiforme associated with phenytoin and cranial radiation therapy) syndrome1285410009
- Erythema multiforme associated with phenytoin and cranial radiation therapy1285410009
- Erythema multiforme major16898231000119107
- Erythema multiforme minor123571000119104
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
- Erythema Multiforme MajorC3241919
- Erythema multiforme majorC3241919
- Erythema multiforme major (disorder)C3241919
- Erythema multiforme major NOSC3241919
- Erythema Multiforme MinorC0857751
- Erythema multiforme minorC0857751
- Erythema multiforme minor (disorder)C0857751
- Erythema multiforme minor NOSC0857751
- Erythema irisC0263322
- Herpes irisC0263323
- Herpes iris (disorder)C0263323
Frequently Asked Questions
What is ICD-10 code L51.9?
ICD-10-CM code L51.9 represents "Erythema multiforme, unspecified". It is a billable/specific code that can be used on a claim.
Is L51.9 a billable code?
Yes, L51.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is L51.9 in?
L51.9 is in Chapter 12: Diseases of the Skin and Subcutaneous Tissue (codes L00-L99).
What codes cannot be used with L51.9?
L51.9 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.
Are additional codes required with L51.9?
Yes, when using L51.9 you should also code: code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).
What SNOMED CT codes does L51.9 map to?
L51.9 maps to 21 SNOMED CT concepts: 41030002, 297942002, 36715001, 1285410009, 762375006, and 16 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for L51.9?
L51.9 is linked to 5 UMLS Concept Unique Identifiers: C0014742, C3241919, C0857751, C0263322, C0263323. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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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.