ICD-10-CM 2027
ICD-10 code for pilonidal abscess
From the official ICD-10-CM alphabetic index entry “Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › pilonidal”. Page updated September 29, 2026.
About coding pilonidal abscess
The ICD-10-CM code for pilonidal abscess is L05.01 (Pilonidal cyst with abscess).
Within L05.0 (pilonidal cyst and sinus with abscess), L05.01 is specifically for pilonidal cyst with abscess. Related codes cover sinus with abscess (L05.02).
The conditions in its Excludes2 note aren't part of L05.01, but may be coded alongside it if the patient has both: congenital sacral dimple (Q82.6) and parasacral dimple (Q82.6).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about pilonidal abscess ICD-10 codes
What is the ICD-10 code for pilonidal abscess?
- L05.01 — Pilonidal cyst with abscess.
Is L05.01 billable?
- Yes. L05.01 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L05.01 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L05.01 as a principal diagnosis.
Is L05.01 a CC or MCC?
- L05.01 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.