M05-M14: Inflammatory polyarthropathies

M06: Other rheumatoid arthritis

Other rheumatoid arthritis, classified under the M06 category, is a group of diseases characterized by inflammation that affects the joints in your body, causing joint pain, swelling, and reduced mobility. It is not caused by the same immune system issues known to trigger classic rheumatoid arthritis. Instead, it could be triggered by trauma, infections, or may have unknown origins. Other rheumatoid arthritis can present in a variety of ways, from minor aches to severe joint pain. Over time, these conditions tend to worsen, further reducing joint functionality if left unchecked. While this group of conditions can affect any joint in the body, it often targets the hands, knees, and wrists. The severity and progression of the disease can vary widely among individuals, and in some cases, other parts of the body, such as the eyes, skin, and lungs, may also be affected. It's essential to note that other rheumatoid arthritis is a chronic condition, meaning it persists over a long period.