Unspecified contact dermatitis (L25) ICD-10-CM
The L25 code range covers unspecified contact dermatitis with 9 ICD-10-CM diagnosis codes. 8 of them are billable and valid for claim submission in fiscal year 2027, 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.
- allergic contact dermatitis L23
- allergy NOS T78.40
- dermatitis NOS L30.9
- irritant contact dermatitis L24
Type 2 Excludes
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.
Codes in the L25 Range 9 codes · 8 billable
- L25 Unspecified contact dermatitisNon-billable
- L25.0 Unspecified contact dermatitis due to cosmetics
- L25.1 Unspecified contact dermatitis due to drugs in contact with skin
- L25.2 Unspecified contact dermatitis due to dyes
- L25.3 Unspecified contact dermatitis due to other chemical products
- L25.4 Unspecified contact dermatitis due to food in contact with skin
- L25.5 Unspecified contact dermatitis due to plants, except food
- L25.8 Unspecified contact dermatitis due to other agents
- L25.9 Unspecified contact dermatitis, unspecified cause
About the L25 Code Range
Contact dermatitis is skin irritation linked to contact with a substance. These codes leave the type of contact dermatitis unspecified but distinguish its cause when known.
The subdivisions identify cosmetics (L25.0), drugs touching the skin (L25.1), dyes (L25.2), and other chemical products (L25.3). They also distinguish food touching the skin (L25.4) from plants other than food (L25.5). Other agents have L25.8; an unspecified cause has L25.9.
Questions About This Page
How many billable codes are in the L25 range?
Of the 9 codes in this range, 8 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the L25 range classify?
The range classifies unspecified contact dermatitis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
