ICD-10 Code M00.872 – Arthritis due to other bacteria, left ankle and foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M00.872 – Arthritis due to other bacteria, left ankle and foot
What it is
This code identifies bacterial arthritis affecting the left ankle and foot when the causative organism is not otherwise specified in the code title. Use it for infection-driven joint inflammation in that location.
Clinical signs
Typical findings include joint pain, swelling, warmth, and reduced range of motion in the left ankle or foot. Clinical features vary; refer to documentation for evidence of an active bacterial joint infection.
When to use this code
Use this code when the record documents arthritis due to bacteria in the left ankle and foot and the organism is not coded elsewhere. It applies when the provider links the joint inflammation to a bacterial cause and specifies the left side. Check documentation if laterality or organism details are unclear.
Do not use for
Do not use it for noninfectious arthritis, gout, or pain without documented bacterial infection. Also avoid it when the affected joint is not the left ankle or foot.
Coding tip
Confirm both the infectious cause and left-sided joint site in the note before assigning M00.872.