ICD-10 Code M05.071 – Felty’s syndrome, right ankle and foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.071 – Felty’s syndrome, right ankle and foot
What it is
This code identifies Felty’s syndrome affecting the right ankle and foot. It indicates rheumatoid arthritis with the Felty’s syndrome complication documented in that specific joint region.
Clinical signs
Expect rheumatoid arthritis findings with Felty’s syndrome features, such as chronic joint inflammation and documented splenomegaly or neutropenia when present. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents Felty’s syndrome involving the right ankle and foot. It is appropriate when the record links the syndrome to that side and site, not just generalized rheumatoid arthritis. If laterality or site is unclear, check documentation.
Do not use for
Do not use it for rheumatoid arthritis without Felty’s syndrome, or for ankle and foot involvement on the left side or both sides. Check documentation if the syndrome is not explicitly stated.
Coding tip
Verify both the Felty’s syndrome diagnosis and the documented right ankle and foot laterality before assigning M05.071.