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v1.0.0
ICD-10 Guide
DiagnosesSprain Right Ankle

Sprain Right Ankle

ICD-10 Coding for Sprain of Right Ankle(S93.401A, S93.412A)

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

Diagnosis Overview

What is Sprain Right Ankle?
Essential facts and insights about Sprain of Right Ankle

Key Clinical Considerations:

  • Pain and swelling around the ankle joint
  • Limited range of motion
  • Bruising or discoloration

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of injury mechanism
  • Physical exam findings including tenderness and swelling
  • Assessment of stability and range of motion

Coding Guidelines

Usage Guidelines & Examples

  • Usage guidelines: Use specific codes based on the ligament affected and encounter type.
  • Common errors: Misclassifying the severity or type of sprain.

Code Exclusions

Important Exclusions

  • Fractures of the ankle
  • Chronic ankle instability

Related ICD-10 Codes

Primary Codes
S93.401A
Sprain of unspecified ligament of right ankle, initial encounter
S93.402A
Sprain of calcaneofibular ligament of right ankle, initial encounter
S93.403A
Sprain of anterior talofibular ligament of right ankle, initial encounter
Ancillary Codes
Z01.89
W19.XXXA
Differential Codes
S96.0-
S93.401A

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Orthopedics

Specialty Applications

  • Athletes and active individuals
  • Emergency departments and orthopedic clinics

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?

Include details of the injury mechanism, physical exam findings, and treatment plan.

Billing considerations?

Ensure correct ICD-10 code is used based on the specific ligament involved and encounter type.