ICD-10 Code M01.X71 – Direct infection of right ankle and foot in infectious and parasitic diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M01.X71 – Direct infection of right ankle and foot in infectious and parasitic diseases classified elsewhere
What it is
This code identifies a direct infection affecting the right ankle and foot as a manifestation of another infectious or parasitic disease. Use it when the joint or surrounding structures are involved, and the underlying condition is coded separately.
Clinical signs
Typical findings include localized pain, swelling, warmth, reduced motion, and tenderness in the right ankle or foot. Clinical features vary; refer to documentation for evidence that the infection is directly linked to another infectious or parasitic disease.
When to use this code
Use this code when the record states a direct infection of the right ankle or foot caused by an infectious or parasitic disease classified elsewhere. You should also code the underlying disease when documented, because this code is not the primary cause. Confirm laterality and the specific site in the note.
Do not use for
Do not use this code for nonspecific foot pain, cellulitis, or osteomyelitis unless the provider documents direct infection of the ankle or foot in this category. Check documentation if the infection is not clearly linked to another infectious or parasitic disease.
Coding tip
Verify both laterality and the underlying infection before assigning M01.X71.