Short answer · Medically reviewed summary · Last updated: 2026-05-08
The medical classification for Pityriasis Rosea is identified by the ICD-10 code L42 and the ICD-9 code 696.3. These administrative codes are used by healthcare providers and insurance systems to document Pityriasis Rosea for billing and clinical record-keeping purposes. What is the clinical nature of Pityriasis Rosea? Pityriasis Rosea is a self-limiting, papulosquamous skin condition typically characterized by a primary "herald patch" followed by a secondary outbreak of smaller, scaly lesions often in a "Christmas tree" distribution on the back.
ICD10 code of Pityriasis Rosea and ICD9 code
ICD-10 and ICD-9 codes for Pityriasis Rosea, with classification details for clinicians, coders and patients.
The medical classification for Pityriasis Rosea is identified by the ICD-10 code L42 and the ICD-9 code 696.3. These administrative codes are used by healthcare providers and insurance systems to document Pityriasis Rosea for billing and clinical record-keeping purposes.
What is the clinical nature of Pityriasis Rosea?
Pityriasis Rosea is a self-limiting, papulosquamous skin condition typically characterized by a primary "herald patch" followed by a secondary outbreak of smaller, scaly lesions often in a "Christmas tree" distribution on the back. While the exact etiology of Pityriasis Rosea remains under investigation, it is widely suspected to be associated with viral reactivation, specifically human herpesvirus 6 (HHV-6) and 7 (HHV-7).
How is Pityriasis Rosea diagnosed?
Diagnosis of Pityriasis Rosea is primarily clinical, based on the morphology and distribution of the rash. Clinicians distinguish Pityriasis Rosea from other conditions like secondary syphilis, guttate psoriasis, or tinea corporis through physical examination. Key diagnostic features include:
- Herald Patch: A single, large, scaly plaque that appears 1–2 weeks before the generalized eruption.
- Distribution: Lesions often align along skin tension lines (Langer’s lines) on the trunk.
- Duration: The condition typically resolves spontaneously within 6 to 8 weeks.
- Symptomatology: Approximately 50% of patients report mild to moderate pruritus (itching).
Is there support for those with Pityriasis Rosea?
Living with Pityriasis Rosea can be distressing due to the visible nature of the rash, even though it is not contagious. Currently, 7 members within the DiseaseMaps.org community have shared their personal experiences with Pityriasis Rosea, providing a space for peer support and shared symptom management strategies for those affected by this dermatological condition.
Next steps
- Consult a board-certified dermatologist to confirm the diagnosis and rule out mimics.
- Use fragrance-free moisturizers or topical anti-itch creams if pruritus becomes bothersome.
- Track your symptoms and recovery timeline to share with your healthcare provider.
- Connect with the community at DiseaseMaps.org to share your journey with others.
Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment.
References
- NIH Genetic and Rare Diseases Information Center (GARD): Pityriasis Rosea overview.
- Orphanet: Rare dermatological disease database.
- World Health Organization (WHO): International Classification of Diseases (ICD-10/ICD-11).
- American Academy of Dermatology (AAD): Clinical guidelines on Pityriasis Rosea.
