ICD-10 Code M05.012 – Felty’s syndrome, left shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.012 – Felty’s syndrome, left shoulder
What it is
This code identifies Felty’s syndrome documented in the left shoulder. It is used when the record links the condition to that specific joint site.
Clinical signs
Clinical features vary; refer to documentation. Felty’s syndrome is generally associated with rheumatoid arthritis and may include splenomegaly and neutropenia, but the coded site here is the left shoulder.
When to use this code
Use this code when the provider documents Felty’s syndrome affecting the left shoulder. It may appear in assessments, problem lists, or encounter diagnoses tied to that anatomic site. Check documentation if the note does not clearly specify laterality or if another joint is identified.
Do not use for
Do not use it for Felty’s syndrome without left-shoulder documentation, or for nonspecific rheumatoid arthritis alone. Check documentation if the record describes a different shoulder or another manifestation.
Coding tip
Verify both the syndrome and the left-sided site are explicitly documented before assigning M05.012.