ICD-10 Code M05.019 – Felty’s syndrome, unspecified shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.019 – Felty’s syndrome, unspecified shoulder
What it is
This code identifies Felty’s syndrome involving the unspecified shoulder. It is used when rheumatoid arthritis is associated with the Felty’s syndrome diagnosis and the shoulder side is not specified.
Clinical signs
Clinical features vary; refer to documentation. Felty’s syndrome is classically linked to rheumatoid arthritis and may include splenomegaly and neutropenia, but you should code only what is documented.
When to use this code
Use this code when the provider documents Felty’s syndrome and specifies shoulder involvement without naming right or left. It may appear in orthopedic, rheumatology, or inpatient records where the shoulder is the affected site. If the record does not clearly support shoulder involvement, check documentation.
Do not use for
Do not use this code for rheumatoid arthritis without Felty’s syndrome, or for shoulder pain alone. If the note specifies a different shoulder laterality, choose the appropriate code instead.
Coding tip
Verify both the syndrome and the unspecified shoulder site in the provider’s documentation before assigning M05.019.