Monoarthritis, not elsewhere classified, left wrist

This code signifies inflammation affecting a single joint in the left wrist that is not attributable to a specific, classified cause such as infection, crystal deposition, or autoimmune disease. It represents an idiopathic or unspecified form of monoarticular arthritis localized to the left wrist joint.

Apply this code when documentation clearly indicates monoarthritis of the left wrist without a definitive underlying etiology. This is appropriate when the provider has ruled out or not yet identified specific causes like rheumatoid arthritis, gout, or septic arthritis, and the inflammation is confined to one joint.

• Ensure documentation specifies "left wrist" and "monoarthritis" without further classification.
• Avoid using this code if a more specific diagnosis (e.g., gouty arthritis, psoriatic arthritis) is documented for the left wrist.
• Query the provider if the laterality is not specified or if the documentation suggests a systemic cause that has not yet been fully investigated.