Washington How to Bill for an Occupational Disease History Report (Code 1055M) is a billing code that is used to bill for an occupational disease history report in the state of Washington. The code is used to bill for a review of a patient's medical history to determine if any medical conditions are related to an occupation or exposures to hazardous substances in the workplace. The report is typically requested by an employer, insurance company, or government agency and includes an evaluation of the patient's medical history, current health status, and any other relevant information. There are two main types of Washington How to Bill for an Occupational Disease History Report (Code 1055M): Type 1 is for a single-employer review of a disease history related to a specific occupation or exposure, and Type 2 is for a multi-employer review of a disease history related to multiple occupations or exposures. Both types of reports require a review of the patient's medical history, current health status, and any other relevant information.