ICD-10 Guide

Above Knee Amputation

ICD-10 Coding for Above Knee Amputation(Z89.611, Z89.612, Z89.619)

PRIMARY SPECIALTYOrthopedics

COMPLEXITYHigh

LAST UPDATED09/15/2025

Sam Tuffun, PT, DPT

Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Above Knee Amputation?

Above knee amputation (AKA) is a surgical procedure involving the removal of the leg above the knee joint, typically performed due to severe trauma, vascular disease, or malignancy. Key clinical points include: 1) Common indications for AKA include peripheral artery disease, diabetes-related complications, and traumatic injuries. 2) The procedure may be elective or urgent, depending on the underlying condition. 3) Post-operative care is crucial for rehabilitation and prosthetic fitting. 4) Patients may experience phantom limb pain, which requires management. 5) Psychological support is often necessary due to the significant lifestyle changes following the amputation. Etiologically, AKA is often necessitated by conditions that compromise limb viability, leading to ischemia or infection. Pathophysiologically, the loss of limb function impacts mobility and quality of life. Clinically, patients may present with severe pain, non-healing ulcers, or gangrene in the affected limb, necessitating surgical intervention.

Key Clinical Considerations:

Diagnosis of above knee amputation is confirmed through clinical evaluation and imaging studies indicating limb viability loss.
Signs include severe limb ischemia, necrosis, or uncontrollable infection; symptoms may involve pain, swelling, and discoloration.
Resolution criteria involve successful healing of the surgical site and adaptation to prosthetic use.
Imaging findings may include angiography showing vascular occlusion or MRI revealing extensive tissue necrosis.

Clinical Information

Clinical Criteria & Documentation Requirements

Documentation must include the reason for amputation, detailed clinical findings, and any pre-operative assessments.
Compliant documentation includes clear indications for surgery, while non-compliant may lack specificity or rationale.
Template phrases: 'Patient diagnosed with [condition] necessitating above knee amputation due to [reason].'
Medical necessity must be documented, including failed conservative treatments and the urgency of the procedure.

Coding Guidelines

Usage Guidelines & Examples

Use Z89.611 for unilateral amputation due to disease, Z89.612 for unilateral amputation due to trauma, and Z89.619 for unspecified causes.
Do not use these codes for below-knee amputations or other lower limb procedures.
Example: Correct usage is Z89.611 for a diabetic patient with gangrene; incorrect would be using Z89.619 without specifying the cause.
Common errors include misclassifying the type of amputation; ensure the documentation aligns with the specific code.

Code Exclusions

Important Exclusions

Excluded conditions include below-knee amputations and other lower limb procedures, as they require different coding.
Alternative codes for exclusions may include those for limb salvage procedures.
Common exclusion errors involve misidentifying the level of amputation; ensure clarity in documentation.
Certain conditions are excluded to maintain specificity in coding and ensure accurate reimbursement.

Specialty Focus

Primary Specialty

Orthopedics

Specialty Applications

This diagnosis applies to patients with severe limb ischemia, trauma, or malignancy necessitating amputation.
Appropriate clinical scenarios include emergency cases of traumatic limb loss or elective procedures for chronic conditions.
Applicable in various settings including inpatient surgical units and outpatient rehabilitation centers.
Orthopedic specialists primarily handle these cases, but vascular surgeons may also be involved.

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: 'Above knee amputation diagnosed based on severe ischemia and non-healing ulcers.'

Template 2

Template: 'Patient presents with gangrene in the left leg consistent with the need for above knee amputation.'

Template 3

Template: 'Diagnostic criteria met: Imaging shows extensive necrosis above the knee joint.'

Template 4

Template: 'Treatment plan includes above knee amputation and subsequent rehabilitation for mobility.'

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?

Documentation must include clinical findings, rationale for amputation, and any relevant imaging results.

When should this code be used vs similar codes?

Use specific codes based on the cause of amputation; for example, use Z89.611 for disease-related amputations.

What are common billing issues with this code?

Billing issues often arise from lack of detailed documentation; ensure all clinical justifications are included.

What procedures are commonly associated?

Related CPT codes may include those for surgical amputation and post-operative care management.

What is Above Knee Amputation?

Key Clinical Considerations:

Diagnosis of above knee amputation is confirmed through clinical evaluation and imaging studies indicating limb viability loss.
Signs include severe limb ischemia, necrosis, or uncontrollable infection; symptoms may involve pain, swelling, and discoloration.
Resolution criteria involve successful healing of the surgical site and adaptation to prosthetic use.
Imaging findings may include angiography showing vascular occlusion or MRI revealing extensive tissue necrosis.

Above Knee Amputation

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?

Above Knee Amputation

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?