2026 ICD-10-CM Diagnosis Code L05.92Pilonidal sinus without abscess
ICD-10-CM Codes›L00–L99›L00-L08›L05
- Billable — Valid for Submission
- Not Chronic
L05.92 is a billable ICD-10-CM diagnosis code for pilonidal sinus without abscess. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 602 through 603. Coders also document this condition as Barber's pilonidal sinus. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Skin and subcutaneous tissue infections.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Barber's pilonidal sinus
- Follicular occlusion tetrad - hidradenitis, acne conglobata, dissecting cellulitis, pilonidal sinus
- Hair sinus
- Perianal sinus
- Perineal sinus
- Pilonidal disease of natal cleft
- Pilonidal sinus of natal cleft
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Coccygeal fistula
- Coccygeal sinus without abscess
- Pilonidal fistula
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Sinus - See Also: Fistula;
- pilonidal (infected) (rectum) - L05.92
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Sinus
- pilonidal (infected) (rectum)
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Hidradenitis Suppurativa
a chronic, suppurative inflammation of the apocrine sweat glands, that is characterized by clusters of bumps or sores.
Patient EducationClinical
Tailbone Disorders
The tailbone is the small bone at the bottom of your backbone, or spine. Tailbone disorders include tailbone injuries, pain, infections, cysts and tumors. You rarely break your tailbone. Instead, most injuries cause bruises or pulled ligaments.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert L05.92 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L05.92Overview
Is L05.92 (Pilonidal cyst and sinus without abscess) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report pilonidal sinus without abscess on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does L05.92 group to?
When pilonidal sinus without abscess is the principal diagnosis on an inpatient stay, it groups to MS-DRG 602, 603, with relative weights from 0.8709 to 1.4213 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of L05.92?
Under the General Equivalence Mappings, pilonidal sinus without abscess converts to ICD-9-CM 685.1 (pilonidal cyst w/o absc). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
