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v1.0.0
ICD-10 Guide
DiagnosesLeft Tka

Left Tka

ICD-10 Coding for Left Total Knee Arthroplasty(M17.1)

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

Diagnosis Overview

What is Left Tka?
Essential facts and insights about Left Total Knee Arthroplasty

Key Clinical Considerations:

  • Severe knee pain and stiffness
  • Radiographic evidence of osteoarthritis or joint degeneration
  • Limited range of motion and functional impairment

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history and physical examination findings
  • Indication for surgery and conservative treatment attempts
  • Preoperative imaging results and surgical plan

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding primary vs. revision TKA.
  • Common errors include incorrect laterality and missing documentation of conservative treatments.

Code Exclusions

Important Exclusions

  • Acute knee injuries requiring different interventions
  • Codes for bilateral TKA or other joint replacements

Related ICD-10 Codes

Primary Codes
Z96.651
Presence of artificial knee joint, left side
M17.12
Unilateral primary osteoarthritis, left knee
Ancillary Codes
Z96.652
Differential Codes
M17.0

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Orthopedic Surgery

Specialty Applications

  • Patients with severe knee osteoarthritis or joint damage
  • Orthopedic surgical settings and outpatient 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

What are the documentation requirements?

Document the patient's history, physical exam findings, imaging results, and the rationale for surgery.

What are the billing considerations?

Ensure accurate coding of the procedure and diagnosis, and verify insurance coverage for TKA.