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v1.0.0
ICD-10 Guide
DiagnosesPilar Cyst

Pilar Cyst

ICD-10 Coding for Pilar Cyst(L72.11)

PRIMARY SPECIALTYDermatology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Pilar Cyst?
Essential facts and insights about Pilar Cyst

Key Clinical Considerations:

  • Firm, round, movable cyst on the scalp or face
  • Cyst may be asymptomatic or tender if inflamed
  • Histological examination shows keratin-filled cyst

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of cysts or family history
  • Description of size, location, and symptoms
  • Photographic evidence if applicable

Coding Guidelines

Usage Guidelines & Examples

  • Use L72.0 for pilar cysts; differentiate from epidermoid cysts (L72.1).
  • Common errors include misclassifying cyst types.

Code Exclusions

Important Exclusions

  • Epidermoid cysts (L72.1)
  • Sebaceous cysts (L72.9)

Related ICD-10 Codes

Primary Codes
L72.0
Pilar cyst
Ancillary Codes
L08.89
Differential Codes
L72.0
L72.3

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Dermatology

Specialty Applications

  • Adults and adolescents, particularly those with a history of cysts
  • Dermatology clinics, outpatient settings

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Document size, location, and any symptoms or complications.

Billing considerations?

Ensure accurate coding to avoid denials; check for payer-specific guidelines.