ICD-10 Code M02.172 – Postdysenteric arthropathy, left ankle and foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M02.172 – Postdysenteric arthropathy, left ankle and foot
What it is
This code identifies postdysenteric arthropathy affecting the left ankle and foot. It refers to joint inflammation that occurs after a dysenteric infection, with the left lower extremity specified.
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 linked prior dysenteric illness and the affected joint.
When to use this code
Use M02.172 when the provider documents postdysenteric arthropathy and clearly identifies the left ankle and foot as the site. This is appropriate when the condition is attributed to a prior dysenteric infection rather than another inflammatory arthritis. If laterality or the causal infection is unclear, check documentation.
Do not use for
Do not use this code for nonspecific ankle or foot pain, traumatic arthritis, or arthritis from another cause. If the record does not support a postdysenteric origin, check documentation.
Coding tip
Verify both the postinfectious cause and left-sided joint location before assigning M02.172.