Pilonidal cyst and sinus (L05) ICD-10-CM
The L05 code range covers pilonidal cyst and sinus with 7 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the L05 Range 7 codes · 4 billable
- L05 Pilonidal cyst and sinusNon-billable
- L05.0 Pilonidal cyst and sinus with abscessNon-billable
- L05.01 Pilonidal cyst with abscess
- L05.02 Pilonidal sinus with abscess
- L05.9 Pilonidal cyst and sinus without abscessNon-billable
- L05.91 Pilonidal cyst without abscess
- L05.92 Pilonidal sinus without abscess
About the L05 Code Range
This group of ICD-10 codes under L05 is specifically used to identify and classify medical conditions related to pilonidal cysts and sinuses, which are skin infections occurring near the natal cleft (the crease between the buttocks). These codes distinguish between cases with and without abscess formation.
The ICD-10 code for pilonidal cyst and sinus includes detailed options such as L05.0 for pilonidal cyst and sinus with abscess, and further subdivisions like L05.01 and L05.02 that specify whether the abscess involves a cyst or a sinus specifically. Synonyms like "pilonidal abscess of natal cleft," "pilonidal disease," or simply "pilonidal abscess" connect these common terms to the exact coding. For cases without abscess, codes L05.9, L05.91, and L05.92 identify cysts or sinuses without infection, often described as "skin dimple," "sacral dimple," or "barber's pilonidal sinus." This coding system helps medical providers and coders accurately document pilonidal disease variations for treatment and billing purposes.
Questions About This Page
How many billable codes are in the L05 range?
Of the 7 codes in this range, 4 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 L05 range classify?
The range classifies pilonidal cyst and sinus. 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.
