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ICD-10 Guide
DiagnosesAcetabular Fracture

Acetabular Fracture

ICD-10 Coding for Acetabular Fracture(S32.4XX_, S32.432A)

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

Diagnosis Overview

What is Acetabular Fracture?
An acetabular fracture is a break in the acetabulum, the socket of the hip joint, often resulting from high-energy trauma such as motor vehicle accidents or falls from height. Key clinical points include: 1) Acetabular fractures can be classified into different types based on the fracture pattern and displacement; 2) They often present with hip pain, inability to bear weight, and limited range of motion; 3) Diagnosis typically involves imaging studies such as X-rays and CT scans to assess fracture displacement and joint involvement. Etiologically, these fractures are commonly associated with trauma, but can also occur in osteoporotic patients with minimal trauma. Pathophysiologically, they can lead to complications such as post-traumatic arthritis if not properly managed. Clinical presentation includes severe pain in the hip region, swelling, and bruising, with patients often unable to move the affected leg. Typical use cases for this diagnosis code include acute trauma cases in emergency settings and orthopedic consultations for surgical intervention.

Key Clinical Considerations:

  • Diagnosis requires clinical evidence of hip pain and imaging confirmation of acetabular fracture.
  • Signs include severe hip pain, swelling, and inability to bear weight; symptoms may also include referred pain to the groin or thigh.
  • Resolution criteria involve the absence of pain and restoration of hip function post-treatment.
  • Imaging findings typically include X-ray evidence of fracture lines and CT scans showing fracture displacement.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Essential documentation includes detailed descriptions of the mechanism of injury, clinical findings, and imaging results.
  • Compliant documentation: 'Patient sustained a fall resulting in hip pain, confirmed by CT scan as an acetabular fracture.' Non-compliant: 'Patient has hip pain.'
  • Documentation template phrases: 'Patient presents with hip pain following trauma, imaging confirms acetabular fracture.'
  • Medical necessity documentation should include the need for surgical intervention or conservative management based on fracture type.

Coding Guidelines

Usage Guidelines & Examples

  • Use this code for acute acetabular fractures due to trauma; for example, a patient involved in a car accident with a confirmed fracture.
  • Do NOT use this code for non-traumatic hip pain or fractures due to osteopenia without trauma.
  • Correct usage: S32.432A for an acute fracture; incorrect: S32.4XX_ for chronic hip pain.
  • Common errors include using unspecified codes when specific fracture types are documented; always specify the fracture type.

Code Exclusions

Important Exclusions

  • Excluded conditions include non-displaced fractures or stress fractures of the acetabulum, as they require different management.
  • Alternative codes for exclusions might include S32.4XXD for subsequent encounters.
  • Common exclusion errors involve misclassifying stress fractures as acute fractures; ensure documentation supports the fracture type.
  • Certain conditions are excluded to maintain coding specificity and ensure accurate treatment pathways.

Related ICD-10 Codes

Primary Codes
S32.4XXA
Acetabular fracture, initial encounter
S32.432A
Acetabular fracture, posterior wall, initial encounter
Ancillary Codes
M97.01_
Differential Codes
S72.0XX_

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Orthopedics

Specialty Applications

  • This diagnosis applies to patients with traumatic acetabular injuries, particularly in high-energy incidents.
  • Appropriate for emergency department visits, inpatient admissions for surgical repair, and outpatient follow-ups.
  • Specialty-specific coding considerations include orthopedic surgery for surgical fixation and rehabilitation services.

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

Template 1

Template: 'Acetabular fracture diagnosed based on CT findings and clinical presentation.'

Template 2

Template: 'Patient presents with severe hip pain consistent with an acetabular fracture following a fall.'

Template 3

Template: 'Diagnostic criteria met: CT scan shows a displaced acetabular fracture.'

Template 4

Template: 'Treatment plan includes surgical intervention for acetabular fracture.'

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

What documentation is required for this code?

Documentation must include the mechanism of injury, clinical findings, and imaging results confirming the fracture.

When should this code be used vs similar codes?

Use this code for acute traumatic acetabular fractures; for non-traumatic conditions, consider alternative codes.

What are common billing issues with this code?

Common issues include claim denials for unspecified codes; ensure specificity in documentation.

What procedures are commonly associated?

Commonly associated procedures include surgical fixation, which may be coded with relevant CPT codes.