Pityriasis rosea (L42)
ICD-10 code L42 is assigned to pityriasis rosea, a specific inflammatory skin condition. This code helps medical professionals identify and document this distinct skin disorder accurately in health records.
Pityriasis rosea (sometimes called pityriasis rosea-like drug eruption) is characterized by a rash that typically begins with a single large patch followed by smaller lesions. The ICD-10 code for pityriasis rosea, L42, is used exclusively for this condition within the "other specified inflammatory condition of skin" category. By linking common names such as pityriasis rosea and its drug eruption variant to the L42 code, healthcare providers and coders can ensure precise documentation, supporting appropriate diagnosis and treatment. Understanding this connection helps clarify which code to use when encountering patients with this distinctive rash pattern on medical records or insurance billing.
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Pityriasis Rosea
A mild exanthematous inflammation of unknown etiology. It is characterized by the presence of salmon-colored maculopapular lesions. The most striking feature is the arrangement of the lesions such that the long axis is parallel to the lines of cleavage. The eruptions are usually generalized, affecting chiefly the trunk, and the course is often self-limiting.
