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v1.0.0
ICD-10 Guide
DiagnosesTendonitis

Tendonitis

ICD-10 Coding for Tendonitis(M65.271, M67.90)

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

Diagnosis Overview

What is Tendonitis?
Essential facts and insights about Tendonitis

Key Clinical Considerations:

  • Pain and tenderness around the affected tendon
  • Swelling and inflammation in the tendon area
  • Reduced range of motion and strength in the affected limb

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including onset and duration of symptoms
  • Physical examination findings detailing tenderness and swelling
  • Imaging results if applicable (e.g., MRI, ultrasound)

Coding Guidelines

Usage Guidelines & Examples

  • Ensure to differentiate between acute and chronic tendonitis for accurate coding.
  • Common errors include using incorrect site codes or failing to document the severity.

Code Exclusions

Important Exclusions

  • Ruptured tendons
  • Tendinopathy due to systemic diseases

Related ICD-10 Codes

Primary Codes
726.10
Tendonitis, unspecified site
726.91
Tendonitis, shoulder
726.73
Tendonitis, Achilles
Ancillary Codes
G89.29
Differential Codes
M77.9
M79.1

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Orthopedics

Specialty Applications

  • Athletes and active individuals
  • Patients with repetitive motion injuries

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 detailed patient history, physical exam findings, and any imaging results.

Billing considerations?

Ensure correct ICD-10 codes are used and document the medical necessity for treatment.