L05.9Header code — not billable

Pilonidal cyst and sinus without abscess

Chapter
12. Diseases of the skin and subcutaneous tissue
Category
L05
Effective date
October 1, 2026

Related codes in category L05

L05Pilonidal cyst and sinusL05.0Pilonidal cyst and sinus with abscessL05.01Pilonidal cyst with abscessYesL05.02Pilonidal sinus with abscessYesL05.91Pilonidal cyst without abscessYesL05.92Pilonidal sinus without abscessYes

Frequently asked questions

What is ICD-10 code L05.9?

L05.9 is an ICD-10-CM diagnosis code for Pilonidal cyst and sinus without abscess.

Is L05.9 a billable code?

No. L05.9 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is L05.9 in?

L05.9 falls under Chapter 12: Diseases of the skin and subcutaneous tissue.

When did L05.9 become effective?

L05.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to L05.9?

L05.9 belongs to category L05, which includes 6 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.