MCMedicalCodingSoftware
L05

L05: Pilonidal cyst and sinus

Non-billable headerICD-10-CM

L05 is a non-billable header ICD-10-CM code for pilonidal cyst and sinus. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with L05

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • L02.3Cutaneous abscess, furuncle and carbuncle of buttock
  • Q43.6Congenital fistula of rectum and anus
  • Q82Other congenital malformations of skin

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead L05

2 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.