Postimmunization arthropathy, unspecified shoulder

This code signifies joint inflammation and pain in the shoulder that develops as an adverse reaction following an immunization. It represents a non-infectious arthropathy directly attributable to a vaccine, affecting an unspecified shoulder joint.

Apply this code when documentation clearly links new-onset shoulder arthropathy to a recent vaccination, and the specific shoulder (left or right) is not documented. This diagnosis is appropriate when other causes of arthropathy have been ruled out, and the patient presents with symptoms such as pain, swelling, or stiffness in the shoulder post-immunization.

• Ensure documentation explicitly states the connection between the immunization and the arthropathy.
• If the specific shoulder (left or right) is documented, use the more specific M02.211 (right shoulder) or M02.212 (left shoulder) code.
• Sequence this code as the primary diagnosis if it is the reason for the encounter; otherwise, it may be a secondary diagnosis.