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ICD-10 Code L05.01: Pilonidal cyst with abscess

L05.01 is a billable ICD-10 diagnosis code used to classify Pilonidal cyst with abscess in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the skin and subcutaneous tissue (L00-L99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the skin and subcutaneous tissue (L00-L99).

When is it used?

  • May be used when a clinician documents pilonidal cyst with abscess in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
12Diseases of the skin and subcutaneous tissue (L00-L99)
block
L00-L08Infections of the skin and subcutaneous tissue
category
L05Pilonidal cyst and sinus
category
L05.0Pilonidal cyst and sinus with abscess
currentL05.0

Official coding notes

Inclusion terms
  • Pilonidal abscess
  • Pilonidal dimple with abscess
  • Postanal dimple with abscess
Excludes2 (may code together if documented)
  • congenital sacral dimple (Q82.6)
  • parasacral dimple (Q82.6)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Dermatologist

Coverage-related procedures and services

CPT 29581high
APPLICATION OF MULTI-LAYER COMPRESSION SYSTEM; LEG (BELOW KNEE), INCLUDING ANKLE AND FOOT
Source: CMS coverage guidance
CPT 29445high
APPLICATION OF RIGID TOTAL CONTACT LEG CAST
Source: CMS coverage guidance
CPT 97598high
DEBRIDEMENT (EG, HIGH PRESSURE WATERJET WITH/WITHOUT SUCTION, SHARP SELECTIVE DEBRIDEMENT WITH SCISSORS, SCALPEL AND FORCEPS), OPEN WOUND, (EG, FIBRIN, DEVITALIZED EPIDERMIS AND/OR DERMIS, EXUDATE, DEBRIS, BIOFILM), INCLUDING TOPICAL APPLICATION(S), WOUND ASSESSMENT, USE OF A WHIRLPOOL, WHEN PERFORMED AND INSTRUCTION(S) FOR ONGOING CARE, PER SESSION, TOTAL WOUND(S) SURFACE AREA; EACH ADDITIONAL 20 SQ CM, OR PART THEREOF (LIST SEPARATELY IN ADDITION TO CODE FOR PRIMARY PROCEDURE)
Source: CMS coverage guidance
CPT 97597high
DEBRIDEMENT (EG, HIGH PRESSURE WATERJET WITH/WITHOUT SUCTION, SHARP SELECTIVE DEBRIDEMENT WITH SCISSORS, SCALPEL AND FORCEPS), OPEN WOUND, (EG, FIBRIN, DEVITALIZED EPIDERMIS AND/OR DERMIS, EXUDATE, DEBRIS, BIOFILM), INCLUDING TOPICAL APPLICATION(S), WOUND ASSESSMENT, USE OF A WHIRLPOOL, WHEN PERFORMED AND INSTRUCTION(S) FOR ONGOING CARE, PER SESSION, TOTAL WOUND(S) SURFACE AREA; FIRST 20 SQ CM OR LESS
Source: CMS coverage guidance
CPT 11010high
DEBRIDEMENT INCLUDING REMOVAL OF FOREIGN MATERIAL AT THE SITE OF AN OPEN FRACTURE AND/OR AN OPEN DISLOCATION (EG, EXCISIONAL DEBRIDEMENT); SKIN AND SUBCUTANEOUS TISSUES
Source: CMS coverage guidance
CPT 11011high
DEBRIDEMENT INCLUDING REMOVAL OF FOREIGN MATERIAL AT THE SITE OF AN OPEN FRACTURE AND/OR AN OPEN DISLOCATION (EG, EXCISIONAL DEBRIDEMENT); SKIN, SUBCUTANEOUS TISSUE, MUSCLE FASCIA, AND MUSCLE
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Pilonidal cyst with abscess

Frequently asked questions

Code details

CodeL05.01
SystemICD10
Display namePilonidal cyst with abscess
ChapterDiseases of the skin and subcutaneous tissue (L00-L99)
BlockInfections of the skin and subcutaneous tissue

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Abscess(connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)Cyst(colloid) (mucous) (simple) (retention)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code L05.01 for Pilonidal cyst with abscess | HealthAssure