Toxic epidermal necrolysis [Lyell]

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2007 Added to the draft code set draft Toxic epidermal necrolysis [Lyell]

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from L51 Erythema multiforme

Excludes1 - never coded here

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

Use additional code

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
code to identify associated manifestations, such as:
code to identify percentage of skin exfoliation (L49.-)
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-)

Inherited from the L49-L54 section Urticaria and erythema (L49-L54)

Excludes1 - never coded here

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

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Lyell's syndrome
Necrolysis, toxic epidermal
Lyell's syndrome > due to drug
Epidermolysis > necroticans combustiformis

Codes in the same group

Code	Description	Status
L51.0	Nonbullous erythema multiforme	Valid
L51.1	Stevens-Johnson syndrome	Valid
L51.3	Stevens-Johnson syndrome-toxic epidermal necrolysis overlap syndrome	Valid
L51.8	Other erythema multiforme	Valid
L51.9	Erythema multiforme, unspecified	Valid