ICD-10-CM L51 is the diagnosis code for Erythema multiforme. This code falls under the section "Urticaria and erythema" within Chapter 12 — Diseases of the skin and subcutaneous tissue (L00-L99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as L51. They are mutually exclusive:
Understanding where L51 sits in the ICD-10-CM classification helps ensure proper coding:
No, L51 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
L51 is the ICD-10-CM diagnosis code for "Erythema multiforme". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
L51 is located in Section L49-L54 — "Urticaria and erythema" within Chapter 12 of the ICD-10-CM Tabular List.
L51 has 6 sub-code(s) that provide more specific detail: L51.0, L51.1, L51.2, L51.3, L51.8 and more.
Use L51 when the patients documented diagnosis matches "Erythema multiforme" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Erythema multiforme is L51.
No, L51 is non-billable. Use a more specific sub-code for primary diagnosis billing.
L51 is in Chapter 12 of the ICD-10-CM Tabular List.
Type 1 Excludes for L51 include: staphylococcal scalded skin syndrome (L00); Ritter's disease (L00).
Yes, L51 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.