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L51 Erythema multiforme

ICD-10-CM category L51 sits in Chapter 12 (Diseases of the skin and subcutaneous tissue, L00-L99). It contains 6 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Billable codes in L51

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

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