ICD-10 Code M00.062 – Staphylococcal arthritis, left knee (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.062 – Staphylococcal arthritis, left knee
What it is
M00.062 identifies staphylococcal infection of the left knee joint causing septic arthritis. Use it when documentation states the arthritis is due to Staphylococcus and the left knee is the affected site.
Clinical signs
Typical findings include a painful, swollen, warm knee with limited range of motion. Clinical features vary; refer to documentation for evidence of joint infection and the organism identified.
When to use this code
Use this code when the provider documents staphylococcal septic arthritis involving the left knee. It is appropriate when the organism is named and the laterality is clearly left knee. Check documentation if the note only says “septic arthritis” without the organism.
Do not use for
Do not use it for arthritis of another cause, such as gout, osteoarthritis, or rheumatoid arthritis. Do not assign it if the infection site or staphylococcal cause is not documented; check documentation.
Coding tip
Verify both the organism and the left-knee laterality before coding, because septic arthritis codes are specific to the causative organism and joint site.