2026 ICD-10-CM Diagnosis Code L05Pilonidal cyst and sinus

ICD-10-CM Codes›L00–L99›L00-L08›L05

ICD-10-CM L05
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

L05 is a non-billable ICD-10-CM category code for pilonidal cyst and sinus, so it cannot be submitted on claims. Use a more specific code from this category instead, such as L05.01, L05.02, L05.91, and L05.92.

Code Identity

ICD-10-CM Code
L05
Billable Status
No — Non-Billable Category
Code Describes
Pilonidal cyst and sinus
Chapter
L00-L08
Infections of the skin and subcutaneous tissue

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL00-L08Infections of the skin and subcutaneous tissue
CategoryL05Pilonidal cyst and sinus
This CodeL05Pilonidal cyst and sinus

Specific Coding for Pilonidal cyst and sinusOverview

Non-specific codes like L05 require more characters. Use one of these billable codes instead:

  • L05.0 for Pilonidal cyst and sinus with abscess

  • Use L05.01 for Pilonidal cyst with abscess

  • Use L05.02 for Pilonidal sinus with abscess

  • L05.9 for Pilonidal cyst and sinus without abscess

  • Use L05.91 for Pilonidal cyst without abscess

  • Use L05.92 for Pilonidal sinus without abscess

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Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About L05Overview

Is L05 (Pilonidal cyst and sinus) a billable code?

No. This is a category header that groups the codes for pilonidal cyst and sinus, and headers cannot be submitted on claims. Claims for pilonidal cyst and sinus need a more specific code from this category, such as L05.01, L05.02, and L05.91.