ICD-10 Code M05.041 – Felty’s syndrome, right hand (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.041 – Felty’s syndrome, right hand
What it is
This code identifies Felty’s syndrome affecting the right hand. It indicates rheumatoid arthritis with the Felty’s syndrome subtype documented for the right hand.
Clinical signs
Clinical features vary; refer to documentation. Felty’s syndrome is classically associated with rheumatoid arthritis and splenomegaly, with possible neutropenia and joint involvement.
When to use this code
Use this code when the clinician documents Felty’s syndrome and specifies the right hand as the affected site. It is appropriate when the record links the diagnosis to the right hand rather than a generalized or unspecified location.
If the note only says Felty’s syndrome without laterality, or if the hand is not clearly identified, check documentation before coding. Confirm that the condition is not being used for rheumatoid arthritis alone.
Do not use for
Do not use this code for rheumatoid arthritis without documented Felty’s syndrome. Do not use it when the affected side is not stated or when another hand, joint, or body site is documented.
Coding tip
Verify both the Felty’s syndrome diagnosis and the right-hand laterality in the provider note before assigning M05.041.