ICD-10-CM L51: Erythema multiforme

ICD-10-CM Diagnosis Code (2025)

Official Description for L51

Erythema multiforme

Coding Notes & Guidelines for L51

Excludes1: Not Coded Here
  • staphylococcal scalded skin syndrome (L00)
  • Ritter's disease (L00)
Use Additional Code

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Use Additional Code
  • code to identify associated manifestations, such as:
  • arthropathy associated with dermatological disorders (M14.8-)
  • conjunctival edema (H11.42)
  • conjunctivitis (H10.22-)
  • corneal scars and opacities (H17.-)
  • corneal ulcer (H16.0-)
  • edema of eyelid (H02.84-)
  • inflammation of eyelid (H01.8)
  • keratoconjunctivitis sicca (H16.22-)
  • mechanical lagophthalmos (H02.22-)
  • stomatitis (K12.-)
  • symblepharon (H11.23-)
Use Additional Code

code to identify percentage of skin exfoliation (L49.-)

Inclusion Terms

SJS-TEN overlap syndrome

Inclusion Terms
  • Erythema iris
  • Erythema multiforme major NOS
  • Erythema multiforme minor NOS
  • Herpes iris

Child Codes (More Specific Codes for L51):

L51.0 - Nonbullous erythema multiforme L51.1 - Stevens-Johnson syndrome L51.2 - Toxic epidermal necrolysis [Lyell] L51.3 - Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome L51.8 - Other erythema multiforme L51.9 - Erythema multiforme, unspecified

About ICD-10-CM Code L51 (Erythema multiforme)

ICD-10-CM code L51 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM L51 became effective on October 1, 2024.

This page provides detailed information about L51 - Erythema multiforme. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Erythema multiforme.