L42 — Pityriasis rosea
Is L42 billable?
Yes — L42 is billable for FY2027. L42 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. L42 may be submitted for encounters from October 1, 2026 through September 30, 2027.
L42 at a glance
| Code | L42 |
|---|---|
| Description | Pityriasis rosea |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does L42 group to?
L42 sits in MDC 09 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 606Minor Skin Disorders with MCCmedical
- 607Minor Skin Disorders without MCCmedical
How is L42 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to L42. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Gibert's disease or pityriasis
- Disease, diseased › Gibert's
- Pityriasis › circinata (capitis)
- Pityriasis › rosea (capitis)
- Disease, diseased › Hebra's › pityriasis › maculata et circinata
Excludes2 — not included here — inherited from Chapter 12
The conditions below are not part of L42, but a patient may have both at the same time. When documentation supports it, L42 and the excluded code may both be reported.
- 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.-)
How long has L42 existed?
L42 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.