Urticaria and erythema (L49-L54)
L51: Erythema multiforme

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

useAdditionalCode
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-)

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

excludes1
staphylococcal scalded skin syndrome (L00)
Ritter's disease (L00)
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

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