L50 Urticaria

Excl.:

allergic contact dermatitis ( L23.-)

angioneurotic oedema ( T78.3)

hereditary angio-oedema ( D84.1)

Quincke oedema ( T78.3)

urticaria:

• giant (T78.3)
• neonatorum (P83.8)
• papulosa (L28.2)
• pigmentosa (Q82.2)
• serum (T80.6)
• solar (L56.3)

L50.0 Allergic urticaria

L50.1 Idiopathic urticaria

L50.2 Urticaria due to cold and heat

L50.3 Dermatographic urticaria

L50.4 Vibratory urticaria

L50.5 Cholinergic urticaria

L50.6 Contact urticaria

L50.8 Other urticaria

Incl.:

Urticaria:

• chronic
• recurrent periodic

L50.9 Urticaria, unspecified

L51 Erythema multiforme

L51.0 Nonbullous erythema multiforme

L51.1 Bullous erythema multiforme

Incl.:

Stevens-Johnson syndrome

L51.2 Toxic epidermal necrolysis [Lyell]

L51.8 Other erythema multiforme

L51.9 Erythema multiforme, unspecified

L52 Erythema nodosum

L53 Other erythematous conditions

Excl.:

erythema:

• ab igne (L59.0)
• due to external agents in contact with skin (L23-L25)
• intertrigo (L30.4)

L53.0 Toxic erythema

Coding-Hint

Use additional external cause code (Chapter XX), if desired, to identify external agent.

Excl.:

neonatal erythema toxicum ( P83.1)

L53.1 Erythema annulare centrifugum

L53.2 Erythema marginatum

L53.3 Other chronic figurate erythema

L53.8 Other specified erythematous conditions

L53.9 Erythematous condition, unspecified

Incl.:

Erythema NOS

Erythroderma NOS

L54* Erythema in diseases classified elsewhere

L54.0* Erythema marginatum in acute rheumatic fever (I00†)

L54.8* Erythema in other diseases classified elsewhere