Lichen planus L43- >

Type 1 Excludes
Type 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.
  • lichen planopilaris (
    ICD-10-CM Diagnosis Code L66.1

    Lichen planopilaris

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Follicular lichen planus
    L66.1
    )
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