L42

Billable

ChapterL00–L99

Rankcategory

Official Description

Pityriasis rosea

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 12: Diseases of the Skin and Subcutaneous Tissue (L00-L99).

CH12 Parent Instructions

Excludes2(Not included here)

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
lipomelanotic reticulosis (I89.8)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
systemic connective tissue disorders (M30-M36)
viral warts (B07.-)

Clinical Hierarchy

CH12Diseases of the skin and subcutaneous tissue (L00-L99)

L40-L45Papulosquamous disorders (L40-L45)

L42Pityriasis rosea

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to L42:

chapterCH12

Diseases of the skin and subcutaneous tissue (L00-L99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to L42. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

5 raw paths

Disease, diseased2 unique routes

Gibert's (pityriasis rosea)→L42

Hebra's

pityriasis

maculata et circinata→L42

Gibert's disease or pityriasis1 unique routes

Direct index entry→L42

Pityriasis (capitis)2 unique routes

circinata (et maculata)→L42

rosea→L42