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ICD-10 Guide
DiagnosesRight Cubital Tunnel Syndrome

Right Cubital Tunnel Syndrome

ICD-10 Coding for Right Cubital Tunnel Syndrome(G56.21)

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

Diagnosis Overview

What is Right Cubital Tunnel Syndrome?
Essential facts and insights about Right Cubital Tunnel Syndrome

Key Clinical Considerations:

  • Numbness or tingling in the ring and little fingers
  • Weakness in grip strength
  • Pain or discomfort on the inner elbow
  • Positive Tinel's sign at the cubital tunnel
  • Positive elbow flexion test

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including symptoms duration and severity
  • Results of neurological examinations
  • Details of any imaging or nerve conduction studies
  • Specific mention of affected hand and symptoms
  • Use of terms like 'cubital tunnel syndrome' or 'ulnar nerve entrapment'

Coding Guidelines

Usage Guidelines & Examples

  • Follow usage guidelines for accurate coding based on clinical findings.
  • Common errors include misidentifying the affected limb or using outdated codes.

Code Exclusions

Important Exclusions

  • Other forms of ulnar nerve entrapment (e.g., at the wrist)
  • Conditions like cervical radiculopathy or thoracic outlet syndrome

Related ICD-10 Codes

Primary Codes
G56.21
Ulnar nerve entrapment, right upper limb
Ancillary Codes
95900-95904
M77.12
Differential Codes
G56.01
G54.2

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Neurology

Specialty Applications

  • Adults with repetitive elbow motion or prior elbow injuries
  • Neurology clinics, orthopedic practices, and rehabilitation centers

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

What are the documentation requirements?

Include patient history, physical exam findings, and diagnostic test results.

What are the billing considerations?

Ensure accurate coding and documentation to support medical necessity.