ICD-10-CM 2027
ICD-10 code for lichen ruber wilson's
From the official ICD-10-CM alphabetic index entry “Wilson's › lichen ruber”. Page updated September 29, 2026.
About coding lichen ruber wilson's
The ICD-10-CM code for lichen ruber wilson's is L43.9 (Lichen planus, unspecified).
Within L43, choose L43.9 (unspecified) only when documentation doesn't support a more specific option: hypertrophic lichen planus (L43.0), bullous lichen planus (L43.1), Lichenoid drug reaction (L43.2), subacute (active) lichen planus (L43.3) and other lichen planus (L43.8).
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 lichen ruber wilson's ICD-10 codes
What is the ICD-10 code for lichen ruber wilson's?
- L43.9 — Lichen planus, unspecified.
Is L43.9 billable?
- Yes. L43.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L43.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L43.9 as a principal diagnosis.
Is L43.9 a CC or MCC?
- No. L43.9 is neither a CC nor an MCC under MS-DRG v44.0.