decisionhealth Newsletters, Answer Books - 2009 Issue 9 (September)
Date of Service / Date of Service
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Article Overview
This article explains the Medicare concept of date of service and how it is generally applied for Part B billing. It also covers common exceptions and timing considerations for multi-component services, diagnostic test billing, and some carrier-specific handling of lab, X-ray, and pathology dates. The content is useful for billing staff, coders, and practices that need to align claims dates with Medicare rules and carrier expectations.
Why This Topic Matters
Correct date-of-service reporting affects claim accuracy and compliance, especially when services are performed, interpreted, collected, or delivered on different days. Understanding the general Medicare rule and its exceptions helps reduce billing errors and denials.
What You Will Learn
- How Medicare generally defines the date of service for Part B items and services.
- Why timing matters when a service is performed on one day and interpreted or completed on another.
- How date-of-service handling may differ for diagnostic tests and certain laboratory-related claims.
- Why some services with multiple components require careful attention to billing dates.
Who Should Read This
- Medical coders
- Billing staff
- Revenue cycle teams
- Healthcare practice managers
- Physician practices
- Diagnostic testing providers
Modifiers Discussed
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