Diseases of the Musculoskeletal System and Connective Tissue

ICD-10 Code: M17.12

Unilateral Primary Osteoarthritis, Left Knee

Primary osteoarthritis affecting left knee.

Clinical Information

Left knee OA, same clinical presentation as right knee OA.

Coding Guidelines

  • 1Use for primary OA of left knee

Common Uses

  • Orthopedic visit for left knee OA

Related ICD-10 Codes

M17.11OA right knee

Documentation Requirements

  • Document 'left knee osteoarthritis'

Real-World Coding Examples

Left knee OA with effusion (M17.12)

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Medical coding for Diseases of the Musculoskeletal System and Connective Tissue