2027 ICD-10-CM Diagnosis Code L01Impetigo

ICD-10-CM Codes›L00–L99›L00-L08›L01

ICD-10-CM L01
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

L01 is a non-billable ICD-10-CM category code for impetigo, so it cannot be submitted on claims. Use a more specific code from this category instead, such as L01.00, L01.01, L01.02, and L01.03.

Code Identity

ICD-10-CM Code
L01
Billable Status
No — Non-Billable Category
Code Describes
Impetigo
Short Description
Impetigo
Same as the full description in the CMS dataset.
Chapter
L00-L08
Infections of the skin and subcutaneous tissue

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL00-L08Infections of the skin and subcutaneous tissue
CategoryL01Impetigo
This CodeL01Impetigo

Specific Coding for ImpetigoOverview

Non-specific codes like L01 require more characters. Use one of these billable codes instead:

  • L01.0 for Impetigo

  • Use L01.00 for Impetigo, unspecified

  • Use L01.01 for Non-bullous impetigo

  • Use L01.02 for Bockhart's impetigo

  • Use L01.03 for Bullous impetigo

  • Use L01.09 for Other impetigo

  • Use L01.1 for Impetiginization of other dermatoses

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to L01: its own notes plus those printed at block L00-L08 and Chapter 12. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • impetigo herpetiformis (L40.1)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block L00-L08 Infections of the skin and subcutaneous tissue applies to 159 codes
  • hordeolum (H00.0)
  • infective dermatitis (L30.3)
  • local infections of skin classified in Chapter 1
  • lupus panniculitis (L93.2)
  • panniculitis NOS (M79.3)
  • panniculitis of neck and back (M54.0-)
  • Perlèche NOS (K13.0)
  • Perlèche due to candidiasis (B37.0)
  • Perlèche due to riboflavin deficiency (E53.0)
  • pyogenic granuloma (L98.0)
  • relapsing panniculitis [Weber-Christian] (M35.6)
  • viral warts (B07.-)
  • zoster (B02.-)
From Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue applies to 1,001 codes
  • 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.-)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Block L00-L08 Infections of the skin and subcutaneous tissue applies to 159 codes
  • code (B95-B97) to identify infectious agent.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Clinical InformationClinical

  • Impetigo

    a common superficial bacterial infection caused by staphylococcus aureus or group a beta-hemolytic streptococci. characteristics include pustular lesions that rupture and discharge a thin, amber-colored fluid that dries and forms a crust. this condition is commonly located on the face, especially about the mouth and nose.

Patient EducationClinical

Impetigo

Impetigo is a skin infection caused by bacteria. It is usually caused by staphylococcal (staph) bacteria, but it can also be caused by streptococcal (strep) bacteria. It is most common in children between the ages of two and six. It usually starts when bacteria get into a break in the skin, such as a cut, scratch, or insect bite.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About L01Overview

What is the ICD-10 code for impetigo?

L01 is the ICD-10-CM category for impetigo, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is L01 (Impetigo) a billable code?

No. This is a category header that groups the codes for impetigo, and headers cannot be submitted on claims. Claims for impetigo need a more specific code from this category, such as L01.00, L01.01, and L01.02.

Can L01 be reported with L40.1?

Not as a rule. The Excludes1 note on L01 lists "impetigo herpetiformis (L40.1)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).