ICD-10 Code M05.02 – Felty’s syndrome, elbow (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.02 – Felty’s syndrome, elbow
What it is
M05.02 identifies Felty’s syndrome with elbow involvement. Use it when rheumatoid arthritis is documented with Felty’s syndrome and the elbow is the specified affected site.
Clinical signs
Clinical features vary; refer to documentation. Felty’s syndrome is typically associated with longstanding rheumatoid arthritis, splenomegaly, and neutropenia, and may include joint inflammation affecting the elbow.
When to use this code
Use this code when the provider clearly documents Felty’s syndrome and identifies the elbow as the involved joint or site. It is appropriate in outpatient, inpatient, or problem-list documentation when the diagnosis is confirmed and laterality or site detail is recorded.
If the note only says rheumatoid arthritis or only mentions neutropenia without Felty’s syndrome, check documentation before assigning M05.02. Code the documented condition as written and avoid assuming the syndrome from partial findings.
Do not use for
Do not use this code for rheumatoid arthritis without Felty’s syndrome, or for elbow pain and swelling without a documented diagnosis. Check documentation if the elbow site is not clearly linked to Felty’s syndrome.
Coding tip
Verify that both Felty’s syndrome and elbow involvement are documented before coding M05.02.