ICD-10-CM 2027
ICD-10 code for impetigo
From the official ICD-10-CM alphabetic index entry “Impetigo (any organism) (any site) (circinate) (contagiosa) (simplex) (vulgaris)”. Page updated September 29, 2026.
About coding impetigo
The ICD-10-CM code for impetigo is L01.00 (Impetigo, unspecified). The official index lists 11 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on L01.00.
Within L01.0, choose L01.00 (unspecified) only when documentation doesn't support a more specific option: Non-bullous impetigo (L01.01), Bockhart's impetigo (L01.02), bullous impetigo (L01.03) and other impetigo (L01.09).
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.
More specific impetigo codes (official index)
- Bockhart's L01.02 — Bockhart's impetigo
- bullous, bullosa L01.03 — Bullous impetigo
- external ear L01.00 — Impetigo, unspecified
- follicularis L01.02 — Bockhart's impetigo
- furfuracea L30.5 — Pityriasis alba
- herpetiformis L40.1 — Generalized pustular psoriasis
- nonobstetrical L40.1 — Generalized pustular psoriasis
- neonatorum L01.03 — Bullous impetigo
- nonbullous L01.01 — Non-bullous impetigo
- specified type NEC L01.09 — Other impetigo
- ulcerative L01.09 — Other impetigo
Common questions about impetigo ICD-10 codes
What is the ICD-10 code for impetigo?
- L01.00 — Impetigo, unspecified. More specific codes apply when the documentation supports them: L01.02, L01.03, L01.00, L01.02 and others below.
What is the ICD-10 code for bockhart's impetigo?
- L01.02 — Bockhart's impetigo.
What is the ICD-10 code for external ear impetigo?
- L01.00 — Impetigo, unspecified.
What is the ICD-10 code for follicularis impetigo?
- L01.02 — Bockhart's impetigo.
What is the ICD-10 code for furfuracea impetigo?
- L30.5 — Pityriasis alba.
What is the ICD-10 code for herpetiformis impetigo?
- L40.1 — Generalized pustular psoriasis.
What is the ICD-10 code for neonatorum impetigo?
- L01.03 — Bullous impetigo.
Is L01.00 billable?
- Yes. L01.00 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L01.00 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L01.00 as a principal diagnosis.
Is L01.00 a CC or MCC?
- No. L01.00 is neither a CC nor an MCC under MS-DRG v44.0.