L42 ICD-10-CM Code: Pityriasis rosea
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
L42Pityriasis rosea
ICD-10-CM diagnosis code · United States clinical modification
Where L42 sits
- 1
Chapter 12
Diseases of the skin and subcutaneous tissue (L00-L99)
- 2
Section
Papulosquamous disorders (L40-L45)
- 3
Category L42
Pityriasis rosea
- 4
Code L42
Pityriasis rosea
Notes for this code
Inclusion terms
No inclusion terms are listed for L42.
Code first
No “code first” instruction is listed for L42.
Use additional code
No “use additional code” instruction is listed for L42.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for L42.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for L42.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code L42 mean?
L42 is the FY 2027 U.S. ICD-10-CM code for “Pityriasis rosea.”
Is L42 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, L42 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is L42 located in ICD-10-CM?
L42 is listed in Chapter 12, Diseases of the skin and subcutaneous tissue (L00-L99), within Papulosquamous disorders (L40-L45) (L40–L45), under category L42, Pityriasis rosea.
What coding notes are listed for L42?
No inclusion terms are listed for L42 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.