Reiter's disease, right wrist

This code signifies Reiter's disease, also known as reactive arthritis, affecting the right wrist. Reactive arthritis is an autoimmune condition triggered by an infection elsewhere in the body, leading to inflammatory arthritis. It typically presents with a characteristic triad of arthritis, urethritis, and conjunctivitis, though not all symptoms may be present.

Use this code when documentation explicitly states a diagnosis of Reiter's disease or reactive arthritis with involvement of the right wrist. The physician's notes should confirm the diagnosis and specify the affected joint. This code is appropriate for both initial and subsequent encounters for this condition.

• Ensure the documentation clearly specifies "right wrist" involvement; laterality is crucial for accurate coding.
• Do not confuse with other forms of inflammatory arthritis, such as rheumatoid arthritis or psoriatic arthritis, unless specifically documented as such.
• Consider sequencing this code after the code for the underlying infection, if known and still active, as reactive arthritis is a sequela.