ICD-10 Guide

Achilles Tendon

ICD-10 Coding for Achilles Tendon Disorders(M76.60, S86.0)

PRIMARY SPECIALTYOrthopedics

COMPLEXITYHigh

LAST UPDATED09/15/2025

Sam Tuffun, PT, DPT

Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Achilles Tendon?

The Achilles tendon is a strong fibrous cord that connects the calf muscles to the heel bone. Disorders of the Achilles tendon can include tendinitis, tendinosis, and ruptures. Key clinical points include: 1) Commonly seen in athletes and individuals engaged in repetitive activities; 2) Symptoms often include pain, stiffness, and swelling near the heel; 3) Risk factors include age, improper footwear, and sudden increases in physical activity. Etiologically, Achilles tendon disorders can arise from overuse, degeneration, or acute injury. Pathophysiologically, these conditions involve inflammation or micro-tears in the tendon fibers, leading to pain and functional impairment. Clinically, patients may present with localized tenderness, swelling, and decreased range of motion, particularly during activities such as running or jumping. Typical use cases for ICD-10 coding include sports injuries, chronic pain management, and pre-operative assessments for surgical interventions.

Key Clinical Considerations:

Diagnosis is confirmed through clinical examination and patient history, including activity level and symptom onset.
Signs include localized tenderness, swelling, and pain during dorsiflexion of the foot; symptoms may worsen with activity.
Resolution criteria involve the absence of pain and restoration of normal function, typically assessed through physical therapy outcomes.
Imaging findings may include ultrasound or MRI showing tendon thickening, tears, or other degenerative changes.

Clinical Information

Clinical Criteria & Documentation Requirements

Documentation must include a detailed patient history, physical examination findings, and any imaging results.
Compliant documentation includes clear descriptions of symptoms and their impact on daily activities; non-compliant documentation may lack specificity.
Template phrases: 'Patient presents with pain in the Achilles tendon region, consistent with tendinitis.'
Medical necessity documentation should justify the need for diagnostic tests or treatments based on clinical findings.

Coding Guidelines

Usage Guidelines & Examples

Use M76.60 for unspecified Achilles tendinopathy when the specific type is not documented; use S86.0 for Achilles tendon injuries.
Do not use these codes for unrelated conditions such as plantar fasciitis or other foot disorders.
Correct usage example: 'Patient diagnosed with M76.60 due to chronic pain in the Achilles tendon.' Incorrect usage: 'Patient with ankle sprain coded as M76.60.'
Common errors include misidentifying the type of tendon injury; ensure accurate clinical documentation to avoid this.

Code Exclusions

Important Exclusions

Excluded conditions include other foot and ankle disorders like plantar fasciitis and ankle sprains, as they require different coding.
Alternative codes for exclusions may include M77.00 for plantar fasciitis.
Common exclusion errors involve misdiagnosing a sprain as tendinopathy; ensure accurate clinical assessment.
Certain conditions are excluded to maintain specificity in coding and ensure appropriate treatment pathways.

Specialty Focus

Primary Specialty

Orthopedics

Specialty Applications

This diagnosis applies to conditions such as Achilles tendinitis, tendinosis, and ruptures.
Appropriate clinical scenarios include sports-related injuries or chronic pain in active individuals.
Applicable in both outpatient settings for conservative management and inpatient for surgical interventions.
Orthopedic specialists primarily utilize these codes, with considerations for physical therapy documentation.

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: 'Achilles tendinopathy diagnosed based on clinical findings and MRI results.'

Template 2

Template: 'Patient presents with pain and swelling in the Achilles tendon consistent with tendinitis.'

Template 3

Template: 'Diagnostic criteria met: tenderness and swelling in the Achilles tendon region.'

Template 4

Template: 'Treatment plan includes physical therapy and possible surgical intervention for Achilles tendon injury.'

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?

Detailed documentation should include patient history, physical exam findings, and imaging results.

When should this code be used vs similar codes?

Use M76.60 for chronic tendinopathy and S86.0 for acute injuries; differentiate based on clinical presentation.

What are common billing issues with this code?

Reimbursement issues may arise from vague documentation; ensure specificity to avoid denials.

What procedures are commonly associated?

Related CPT codes include 27650 for Achilles tendon repair and 27652 for tendon grafting.

What is Achilles Tendon?

Key Clinical Considerations:

Diagnosis is confirmed through clinical examination and patient history, including activity level and symptom onset.
Signs include localized tenderness, swelling, and pain during dorsiflexion of the foot; symptoms may worsen with activity.
Resolution criteria involve the absence of pain and restoration of normal function, typically assessed through physical therapy outcomes.
Imaging findings may include ultrasound or MRI showing tendon thickening, tears, or other degenerative changes.

Achilles Tendon

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Template 1

Template 2

Template 3

Template 4

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

What documentation is required for this code?

When should this code be used vs similar codes?

What are common billing issues with this code?

What procedures are commonly associated?

Achilles Tendon

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Template 1

Template 2

Template 3

Template 4

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

What documentation is required for this code?

When should this code be used vs similar codes?

What are common billing issues with this code?

What procedures are commonly associated?