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ICD-10 Guide
DiagnosesAnterior Cruciate Ligament Surgery

Anterior Cruciate Ligament Surgery

ICD-10 Coding for Anterior Cruciate Ligament Surgery(S83.51)

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

Diagnosis Overview

What is Anterior Cruciate Ligament Surgery?
Essential facts and insights about Anterior Cruciate Ligament Surgery

Key Clinical Considerations:

  • Patient presents with knee pain, swelling, and instability, particularly during activities that involve pivoting or sudden stops.
  • MRI findings showing a complete or partial tear of the anterior cruciate ligament (ACL).
  • Physical examination reveals a positive Lachman test or anterior drawer test indicating ACL injury.
  • Imaging findings may include joint effusion or bone contusions on MRI or X-ray.
  • Severity is often classified based on the degree of ligament damage: Grade I (mild), Grade II (moderate), and Grade III (complete tear).

Clinical Information

Clinical Criteria & Documentation Requirements

  • Complete medical history including mechanism of injury and symptom duration.
  • Specific terminology such as 'ACL tear', 'instability', and 'knee effusion' must be documented.
  • Examples include: 'Patient diagnosed with ACL tear based on MRI findings and physical examination.'
  • Documentation must support medical necessity for surgery, including conservative treatment attempts.
  • Quality measures may include documentation of pre-operative assessments and post-operative outcomes.

Coding Guidelines

Usage Guidelines & Examples

  • Use S83.51 for ACL injuries requiring surgical intervention, particularly reconstruction.
  • Do NOT use this code for ACL sprains or injuries treated conservatively without surgery.
  • Related codes include S83.52 (partial tear) and S83.53 (complete tear of ACL) for non-surgical cases.
  • Common errors include using the wrong severity code or failing to document the mechanism of injury.
  • In complex cases, ensure to document all associated injuries to the knee for accurate coding.

Code Exclusions

Important Exclusions

  • Excludes ACL sprains that do not require surgical intervention.
  • Alternative codes for excluded conditions include S83.50 for unspecified ACL injury.
  • Conditions are excluded to ensure accurate representation of surgical cases.
  • Common mistakes include misclassifying sprains as tears without surgical necessity.
  • Related but distinct conditions include meniscal tears and collateral ligament injuries.

Related ICD-10 Codes

Primary Codes
S83.51
Complete tear of anterior cruciate ligament of knee
S83.52
Partial tear of anterior cruciate ligament of knee
Ancillary Codes
Z47.89
Differential Codes
M23.5

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Orthopedic Surgery

Specialty Applications

  • Applies to patients with ACL injuries, often seen in athletes or active individuals.
  • Patient populations include young adults and athletes, particularly those involved in sports with high pivoting demands.
  • Clinical settings include outpatient orthopedic clinics and inpatient surgical facilities.
  • Specialty-specific applications are primarily in orthopedic surgery and sports medicine.
  • Treatment contexts include post-injury surgical repair and rehabilitation protocols.

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: 'Patient diagnosed with ACL tear based on MRI findings and physical examination.'

Template 2

Template: 'Clinical presentation consistent with ACL injury including knee instability and swelling.'

Template 3

Template: 'Diagnostic criteria met as evidenced by MRI showing complete ACL tear.'

Template 4

Template: 'Treatment plan initiated for ACL reconstruction with rehabilitation protocol.'

Template 5

Template: 'Follow-up care for ACL injury including monitoring of knee stability and range of motion.'

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 diagnosis?

Detailed documentation of injury mechanism, physical exam findings, and imaging results.

How does this differ from similar diagnoses?

ACL injuries are specifically related to the anterior cruciate ligament, while other knee injuries may involve different ligaments.

What are common billing considerations?

Ensure that the procedure is medically necessary and supported by documentation to optimize claims.

What procedures are typically associated?

Commonly associated CPT codes include 29888 for arthroscopic ACL reconstruction.

Are there any quality reporting implications?

Quality measures may include tracking post-operative recovery and functional outcomes.