ICD-10-CM Tabular Index · Chapter 12 · FY 2027 L00–L08
Infections of the skin and subcutaneous tissue (L00-L08) ICD-10-CM
The L00–L08 section covers infections of the skin and subcutaneous tissue with 211 ICD-10-CM diagnosis codes, of which 159 are billable in fiscal year 2027. The section is organized into the 7 code ranges listed below.
✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027
7
Code Ranges
211
Diagnosis Codes
159
Billable Codes
L00–L08
Code Range
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the L00–L08 Code Range
These conditions include infections of the skin and tissue beneath it. They also include acute lymphadenitis, or inflammation of the lymph nodes.
L00 describes staphylococcal scalded skin syndrome, which causes fragile blisters and loss of surface skin in infants. L01 separates impetigo, a surface bacterial infection that forms crusted lesions, from impetiginization of other skin conditions.
L02, L03, and L04 organize their conditions by body site. L03 distinguishes fingers and toes from other limb sites, while L04 separates upper and lower limbs. L05 distinguishes pilonidal cysts and sinuses with an abscess from those without one. L08 groups other local infections of the skin and tissue beneath it, including specified and unspecified infections.
FY 2027 changes: The FY 2027 ICD-10-CM update, effective October 1, 2026, added L02.237 and revised the titles of L02.232, L03.312 and L03.322.
Questions About This Page
How many codes are in the L00-L08 range?
The L00-L08 range contains 211 ICD-10-CM diagnosis codes in FY 2027. 159 of them are billable, and the rest are category headers that organize the section.
What conditions does L00-L08 cover?
The range covers infections of the skin and subcutaneous tissue. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Ritter's disease
Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
code to identify percentage of skin exfoliation L49
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.
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.
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
abscess (acute) of lymph nodes, except mesenteric
acute lymphadenitis, except mesenteric
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.
chronic or subacute lymphadenitis, except mesenteric I88.1
