Bullous disorders (L10-L14) ICD-10-CM
The L10–L14 section covers bullous disorders with 32 ICD-10-CM diagnosis codes, of which 26 are billable in fiscal year 2026. The section is organized into the 5 code ranges listed below.
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.
Code Ranges in This Section 5 ranges · 32 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the L10–L14 Code Range
ICD-10 codes L10-L14 cover a group of rare autoimmune and inflammatory skin diseases characterized by blistering, known as bullous disorders. These codes are used to document specific types of pemphigus, pemphigoid, and other blistering skin conditions that require precise classification for treatment and diagnosis.
The L10 series focuses on pemphigus variants, including pemphigus vulgaris (also known as oral pemphigus vulgaris or pemphigus of gingival mucous membrane), pemphigus vegetans, and pemphigus foliaceous. It also includes drug-induced pemphigus and rare forms like paraneoplastic pemphigus. The L11 codes group other acantholytic disorders such as acquired keratosis follicularis and transient acantholytic dermatosis. L12 codes represent pemphigoid disorders, including bullous pemphigoid—sometimes called dermatitis herpetiformis or drug-induced bullous pemphigoid—and cicatricial pemphigoid, which affects mucous membranes. The L13 series describes other bullous disorders like dermatitis herpetiformis and subcorneal pustular dermatitis. Finally, L14 captures bullous disorders linked to diseases classified elsewhere. These codes help healthcare professionals accurately identify the exact type of blistering condition, guiding appropriate management and care.
Questions About This Page
How many codes are in the L10-L14 range?
The L10-L14 range contains 32 ICD-10-CM diagnosis codes in FY 2026. 26 of them are billable, and the rest are category headers that organize the section.
What conditions does L10-L14 cover?
The range covers bullous disorders. 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.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
