What does the suffix 'M' indicate in Medicare Health Insurance Claim Numbers?

The suffix 'M' in Medicare Health Insurance Claim Numbers is used to indicate that the individual has Part B benefits only. This notation helps in the administrative processes of Medicare by categorizing beneficiaries based on the type of coverage they have.

Part B of Medicare typically includes medical insurance, covering services like doctor visits, outpatient care, and some preventive services. Therefore, when a claim number includes the suffix 'M', it signifies that the patient is enrolled in Medicare Part B, allowing for appropriate claims processing and billing.

Other options represent different categories of benefits or conditions but do not connect directly to the specific designation of 'M' in Medicare claim numbers, which focuses uniquely on the existence of Part B benefits.