ICD-10-CM 2027
ICD-10 code for simplex pityriasis
From the official ICD-10-CM alphabetic index entry “Pityriasis (capitis) › simplex”. Page updated September 29, 2026.
About coding simplex pityriasis
The ICD-10-CM code for simplex pityriasis is L30.5 (Pityriasis alba).
Within L30 (other and unspecified dermatitis), L30.5 is specifically for pityriasis alba. Related codes cover Nummular dermatitis (L30.0), Dyshidrosis [pompholyx] (L30.1), cutaneous autosensitization (L30.2), infective dermatitis (L30.3), erythema intertrigo (L30.4), other specified dermatitis (L30.8) and dermatitis, unspecified (L30.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about simplex pityriasis ICD-10 codes
What is the ICD-10 code for simplex pityriasis?
- L30.5 — Pityriasis alba.
Is L30.5 billable?
- Yes. L30.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L30.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L30.5 as a principal diagnosis.
Is L30.5 a CC or MCC?
- No. L30.5 is neither a CC nor an MCC under MS-DRG v44.0.