ICD-10 Code M05.822 – Other rheumatoid arthritis with rheumatoid factor of left elbow (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.822 – Other rheumatoid arthritis with rheumatoid factor of left elbow
What it is
This code identifies rheumatoid arthritis affecting the left elbow, with rheumatoid factor documented, but not classified elsewhere. Use it when the record clearly links the condition to the left elbow.
Clinical signs
Typical findings include chronic joint pain, swelling, stiffness, and reduced range of motion in the elbow. Clinical features vary; refer to documentation for evidence of rheumatoid factor and left-sided joint involvement.
When to use this code
Use M05.822 when the provider documents rheumatoid arthritis with rheumatoid factor and specifies the left elbow as the affected joint. It is appropriate for outpatient, inpatient, or specialist notes when laterality is clear. Check documentation if the record mentions multiple joints or does not identify the elbow.
Do not use for
Do not use this code if rheumatoid factor is not documented or if the left elbow is not specifically identified. It is also wrong for unspecified rheumatoid arthritis or non-rheumatoid elbow arthritis.
Coding tip
Confirm both the rheumatoid factor status and the left elbow laterality in the provider note before assigning this code.