Postimmunization arthropathy, unspecified ankle and foot

This code describes inflammation and pain in the joints of the ankle and/or foot that develops as a reaction to a recent immunization. It signifies an adverse event where the immune response to a vaccine manifests as arthropathy, without specifying the exact joint or laterality within the ankle and foot region.

Use this code when documentation clearly links new-onset ankle and/or foot joint pain and inflammation to a recent vaccination, and the specific joint affected (e.g., left talocrural, right subtalar) is not specified. This diagnosis is typically made after excluding other causes of arthropathy.

• Ensure the medical record explicitly states a causal link between the immunization and the arthropathy.
• If the specific ankle or foot joint and laterality are documented, use a more specific M02.27- subcategory.
• Consider sequencing this code after the T88.1- (Other complications following immunization, not elsewhere classified) or T88.0- (Anaphylactic reaction due to serum or vaccine) if applicable.