Final answer:
The coder would communicate the corrected codes to the billing department of the hospital.
Step-by-step explanation:
When a coder receives notice that a claim has been rejected due to an incorrect code assignment, they would need to communicate the corrected codes to the billing department of the hospital. The billing department is responsible for submitting the correct codes so that the claim can be processed and paid by the insurance company. This communication ensures that the hospital receives proper reimbursement for the services provided.
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