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ICD-10 Coding for Pilonidal Cyst(L05.01, L05.02, L05.91, L05.92)

Complete ICD-10-CM coding and documentation guide for Pilonidal Cyst. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Pilonidal SinusPilonidal Abscess

Related ICD-10 Code Ranges

Complete code families applicable to Pilonidal Cyst

L05.0-L05.9Primary Range

Pilonidal cyst and sinus

This range includes all codes related to pilonidal cysts and sinuses, with or without abscess.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
L05.01Pilonidal cyst with abscessUse when a pilonidal cyst is present with an abscess confirmed by clinical or imaging findings.
  • Ultrasound showing abscess
  • WBC count >12,000/µL
L05.02Pilonidal sinus with abscessUse when a pilonidal sinus is present with an abscess.
  • MRI showing sinus tracts
  • Clinical evidence of fistula
L05.91Pilonidal cyst without abscessUse for chronic or recurrent pilonidal cysts without active infection.
  • History of prior drainage
  • No current signs of infection
L05.92Pilonidal sinus without abscessUse for pilonidal sinuses without abscess.
  • MRI or clinical exam confirming sinus without abscess

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for pilonidal cyst with abscess

Essential facts and insights about Pilonidal Cyst

The ICD-10 code for a pilonidal cyst with abscess is L05.01, used when an abscess is confirmed.

Primary ICD-10-CM Codes for pilonidal cyst

Pilonidal cyst with abscess
Billable Code

Decision Criteria

clinical Criteria

  • Presence of purulent drainage and fluctuant mass

Applicable To

  • Pilonidal cyst with purulent drainage
  • Fluctuant mass in sacrococcygeal region

Excludes

  • Hidradenitis suppurativa (L73.2)
  • Perianal abscess (K61.0)

Clinical Validation Requirements

  • Ultrasound showing abscess
  • WBC count >12,000/µL

Code-Specific Risks

  • Misclassification if abscess is not documented
  • Incorrect DRG assignment

Coding Notes

  • Ensure documentation specifies 'abscess' to avoid incorrect coding.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Staphylococcus aureus as the cause of diseases classified elsewhere

B95.6
Use if culture confirms Staphylococcus aureus infection.

Personal history of other specified conditions

Z87.898
Use for documenting history of pilonidal disease.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Hidradenitis suppurativa

L73.2
Presence of multiple inflamed nodules in axillary or groin regions.

Anal fistula

K60.5
Located in the anal region, not sacrococcygeal.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Pilonidal Cyst to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code L05.01.

Impact

Clinical: Leads to incorrect diagnosis coding., Regulatory: Non-compliance with coding standards., Financial: Potential for claim denials.

Mitigation Strategy

Use specific terms like 'abscess' or 'sinus'., Include imaging or lab results.

Impact

Reimbursement: Incorrect DRG assignment leading to potential revenue loss., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation Strategy

Query provider to confirm abscess presence and use L05.01 or L05.02 as appropriate.

Impact

Reimbursement: Potential claim denial or audit risk., Compliance: Violation of NCCI bundling rules., Data Quality: Misleading procedural data.

Mitigation Strategy

Only report excision codes if I&D is part of the excision procedure.

Impact

Incorrect use of I&D and excision codes together.

Mitigation Strategy

Educate providers on NCCI edits and bundling rules.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Pilonidal Cyst, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Pilonidal Cyst

Use these documentation templates to ensure complete and accurate documentation for Pilonidal Cyst. These templates include all required elements for proper coding and billing.

Excision of Pilonidal Cyst with Flap Closure

Specialty: Colorectal Surgery

Required Elements

  • Cyst dimensions
  • Sinus tract details
  • Closure method

Example Documentation

Elliptical excision of 5 cm pilonidal cyst with 3 sinus tracts extending laterally. Deep dissection to sacral fascia. Closure achieved via Limberg flap (4 cm x 6 cm). Drain placed.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Excised pilonidal cyst.
Good Documentation Example
Excision of 4 cm pilonidal cyst with 2 sinus tracts (3 cm right/2 cm left). Limberg flap closure (5x7 cm). Pathology confirms cyst wall with acute inflammation.
Explanation
The good example provides specific details on the size, location, and closure method, supporting accurate coding.

Need help with ICD-10 coding for Pilonidal Cyst? Ask your questions below.

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