Impetigo (L01) ICD-10-CM
The L01 code range covers impetigo with 8 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- impetigo herpetiformis L40.1
Codes in the L01 Range 8 codes · 6 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the L01 range.
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.
Staphylococcus aureus
Potentially pathogenic bacteria found in nasal membranes, skin, hair follicles, and perineum of warm-blooded animals. They may cause a wide range of infections and intoxications.
About the L01 Code Range
ICD-10 codes L01 and its subcategories specifically identify various forms of impetigo, a common bacterial skin infection. These codes are used to classify impetigo cases, including its typical presentations such as non-bullous and bullous types.
This group of ICD-10 codes covering impetigo defines conditions like L01.00 for unspecified impetigo, which includes terms like Infective otitis externa due to impetigo and Streptococcal impetigo. L01.01 is used for non-bullous impetigo, sometimes called staphylococcal non-bullous impetigo. More specific forms such as L01.02 for Bockhart's impetigo correspond with follicular bacterial infections, while L01.03 captures bullous impetigo, a blistering variation often seen in newborns (also termed impetigo neonatorum). Additionally, L01.09 covers other less common impetigo forms. The code L01.1 refers to impetiginization of other dermatoses, indicating secondary bacterial infection of pre-existing skin conditions like atopic dermatitis (commonly called infected eczema or pustular eczema). Use of these specific ICD-10 codes aids in clear documentation and appropriate management of impetigo and its variants in clinical practice.
Questions About This Page
How many billable codes are in the L01 range?
Of the 8 codes in this range, 6 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the L01 range classify?
The range classifies impetigo. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
