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ICD-10-CM Codes
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L00-L99
Diseases of the skin and subcutaneous tissue
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L40-L45
Papulosquamous disorders
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Lichen planus L43
Lichen planus L43-
Type 1 ExcludesType 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as L43. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Clinical Information
- An inflammatory, pruritic disease of the skin and mucous membranes, which can be either generalized or localized. It is characterized by distinctive purplish, flat-topped papules having a predilection for the trunk and flexor surfaces. The lesions may be discrete or coalesce to form plaques. Histologically, there is a "saw-tooth" pattern of epidermal hyperplasia and vacuolar alteration of the basal layer of the epidermis along with an intense upper dermal inflammatory infiltrate composed predominantly of t-cells. Etiology is unknown.
- Inflammatory, pruritic disease of the skin and mucous membranes, which can be either generalized or localized; characterized by distinctive purplish, flat-topped papules having a predilection for the trunk and flexor surfaces; lesions may be discrete or coalesce to form plaques.
Codes
- L43 Lichen planus
- L43.0 Hypertrophic lichen planus
- L43.1 Bullous lichen planus
- L43.2 Lichenoid drug reaction
- L43.3 Subacute (active) lichen planus
- L43.8 Other lichen planus
- L43.9 Lichen planus, unspecified
