1. L51 Erythema multiforme

    Use Additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    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-)
    code to identify percentage of skin exfoliation (L49.-)


    • staphylococcal scalded skin syndrome (L00)
    • Ritter's disease (L00)
    1. L51.0 Nonbullous erythema multiforme

    2. L51.1 Stevens-Johnson syndrome

    3. L51.2 Toxic epidermal necrolysis [Lyell]

    4. L51.3 Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome

      Inclusion term(s):

      • SJS-TEN overlap syndrome
    5. L51.8 Other erythema multiforme

    6. L51.9 Erythema multiforme, unspecified

      Inclusion term(s):

      • Erythema iris
      • Erythema multiforme major NOS
      • Erythema multiforme minor NOS
      • Herpes iris
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.