Subject: Request for Itemized Invoice and Treatment Description

Dear [Recipient's Name],

I hope this message finds you well.

I am writing to request an itemized invoice along with a detailed description of the treatment provided. Unfortunately, I am unable to locate any treatment information in the invoice that was previously submitted.

Could you please provide the necessary documentation at your earliest convenience? This will greatly assist in processing the claim efficiently.

Thank you for your attention to this matter. I look forward to your prompt response.

Best regards,

[Your Name]
[Your Position]
[Your Contact Information]
[Your Company Name]