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v1.0.0
ICD-10 Guide
ICD-10 CodesS01.9

S01.9

Billable

Open wound of unspecified part of head

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 S01.9 is a billable code used to indicate a diagnosis of open wound of unspecified part of head.

Key Diagnostic Point:

An open wound of the head refers to a break in the skin or mucous membrane that exposes underlying tissues, which can occur due to various mechanisms such as trauma, laceration, or abrasion. This code is used when the specific location of the wound on the head is not specified, making it essential for coders to ensure that the documentation does not provide a more specific site. Open wounds can vary in severity, from superficial cuts to deep lacerations that may involve underlying structures such as muscles, nerves, or blood vessels. The management of these wounds typically involves thorough cleaning, possible suturing, and monitoring for infection. The clinical context often includes trauma from falls, accidents, or assaults, and the diagnostic approach may involve physical examination and imaging studies to assess for associated injuries. Complications can include infection, delayed healing, and scarring, necessitating careful follow-up and management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Unspecified location may lead to ambiguity in coding.
  • Potential for associated injuries that require additional codes.
  • Variability in documentation quality across providers.
  • Need for clear differentiation from other head injuries.

Audit Risk Factors

  • Inadequate documentation of the wound's location.
  • Failure to capture associated injuries.
  • Misclassification of wound type (open vs. closed).
  • Inconsistent terminology used by different providers.

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Documentation must include the mechanism of injury, wound assessment, and treatment provided.

Common Clinical Scenarios

Trauma cases presenting with head injuries from falls, sports injuries, or assaults.

Billing Considerations

Ensure that the mechanism of injury is clearly documented to support the use of external cause codes.

Surgery

Documentation Requirements

Operative reports should detail the extent of the wound, surgical interventions performed, and any complications encountered.

Common Clinical Scenarios

Surgical repair of lacerations or wounds requiring debridement.

Billing Considerations

Accurate coding requires clear documentation of the surgical procedure and any associated codes for complications.

Coding Guidelines

Inclusion Criteria

Use S01.9 When
  • Coders should refer to the official ICD
  • CM coding guidelines, particularly those related to injuries and external causes
  • Accurate coding requires a thorough understanding of the injury's context and associated factors

Exclusion Criteria

Do NOT use S01.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

12001CPT Code

Simple repair of superficial wounds

Clinical Scenario

Used when a simple repair is performed on an open wound of the head.

Documentation Requirements

Operative report detailing the repair procedure.

Specialty Considerations

Emergency and surgical specialties should ensure accurate coding based on the complexity of the repair.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specificity in coding injuries, but it has also increased the complexity of coding due to the need for precise documentation of injury types and locations.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specificity in coding injuries, but it has also increased the complexity of coding due to the need for precise documentation of injury types and locations.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specificity in coding injuries, but it has also increased the complexity of coding due to the need for precise documentation of injury types and locations.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

When should I use S01.9 instead of a more specific code?

Use S01.9 when the documentation does not specify the exact location of the open wound on the head, and ensure that there are no more specific codes that apply.