L51

Erythema multiforme

Header / non-billable

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · L51
Excludes 1

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

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.-)

Inherited from L49-L54Urticaria and erythema
Excludes 1

Lyme disease (A69.2-) rosacea (L71.-)

Inherited from chapter 12Diseases of the skin and subcutaneous tissue
Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) lipomelanotic reticulosis (I89.8) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) systemic connective tissue disorders (M30-M36) viral warts (B07.-)

Official Guidelines for L51

FY 2026 ›