I have a question about valid places of service for CPT 57410. Our OB performed this in the office. This was the only procedure done on this date, so there isn't a bundling issue. Tricare is informing us that the claim was rejected due to an invalid POS and states it's an AMA rule. However, I have not been able to find anything that actually says that. Does anyone know if this is limited to certain places of service? They have denied the claim as unprocessable so will not even accept an appeal.