ICD-10 Code M02.872 – Other reactive arthropathies, left ankle and foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M02.872 – Other reactive arthropathies, left ankle and foot
What it is
M02.872 identifies reactive arthropathy affecting the left ankle and foot. Use it when the record shows a postinfectious or other reactive joint inflammation in that specific location.
Clinical signs
Typical findings include joint pain, swelling, stiffness, and reduced range of motion in the left ankle or foot. Clinical features vary; refer to documentation for the suspected trigger or associated infection.
When to use this code
Use this code when the provider documents reactive arthropathy limited to the left ankle and foot. It fits cases where the joint problem is linked to a reactive process rather than primary trauma or degenerative disease.
Code it from the chart when laterality is clear and the affected site is specifically the left ankle and foot. Check documentation if the note only says “reactive arthritis” without site detail.
Do not use for
Do not use this code for gout, septic arthritis, osteoarthritis, or traumatic joint injury. If the record does not support a reactive arthropathy diagnosis, check documentation.
Coding tip
Confirm both the reactive arthropathy diagnosis and left-sided ankle/foot laterality before assigning M02.872.