ICD-10-CM 2027
ICD-10 code for ulcerative impetigo
From the official ICD-10-CM alphabetic index entry “Impetigo (any organism) (any site) (circinate) (contagiosa) (simplex) (vulgaris) › ulcerative”. Page updated September 29, 2026.
About coding ulcerative impetigo
The ICD-10-CM code for ulcerative impetigo is L01.09 (Other impetigo).
Within L01.0, choose L01.09 (Other impetigo) only when documentation doesn't support a more specific option: unspecified (L01.00), Non-bullous impetigo (L01.01), Bockhart's impetigo (L01.02) and bullous impetigo (L01.03).
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 602 (Cellulitis with MCC, relative weight 1.4273) and DRG 603 (Cellulitis without MCC, relative weight 0.8635), 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 ulcerative impetigo ICD-10 codes
What is the ICD-10 code for ulcerative impetigo?
- L01.09 — Other impetigo.
Is L01.09 billable?
- Yes. L01.09 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L01.09 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L01.09 as a principal diagnosis.
Is L01.09 a CC or MCC?
- No. L01.09 is neither a CC nor an MCC under MS-DRG v44.0.