Audits: Watch The Clock For Medicare Facility Observation Patients

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Note:  The following article synopsis was NOT provided by AAPC. It was created by Find-A-Code/innoviHealth.

Article Overview

This article covers Medicare observation services in the context of the Two-Midnight Rule and audit review, with emphasis on timing, documentation, and claim review considerations for hospital facility observation patients. It is written for coders, billing staff, compliance professionals, and clinicians who document or report observation-related services, and it also touches on differences between Medicare and non-Medicare payer policies.

Why This Topic Matters

Observation timing and documentation can affect whether a stay is reviewed as inpatient or outpatient observation and how claims are evaluated under Medicare audit processes. Understanding the general policy framework helps facilities and physician practices support compliant reporting and prepare for payer review.

Article Sections

  1. Observation timing and post-discharge waiting time

    Introduces the timing focus for Medicare facility observation patients and notes an exclusion related to discharge-related waiting time.

  2. Observation time before admission and documentation focus

    Discusses how pre-admission observation activity is considered in review and emphasizes the type of documentation that supports admission decisions.

  3. Medical review, audits, and the Two-Midnight Rule

    Summarizes how review processes and audit activity relate to the Two-Midnight Rule and broader Medicare oversight.

  4. The clock starts with the order for admission for facility observation services

    Explains the general timing framework for when observation begins and ends for facility reporting, including completion of medically necessary services.

  5. Physician observation payment and Medicare policy differences

    Covers how physician observation reporting is addressed under Medicare and notes distinctions from facility payment policy.

  6. Private payer observation service policies

    Notes that non-Medicare payers may follow different reporting and payment approaches for observation services.

What You Will Learn

  • How Medicare observation services are reviewed in relation to inpatient admission decisions
  • What types of documentation are emphasized for observation-related care
  • How observation timing is discussed for facility reporting
  • How physician and facility observation payment policies differ in general terms
  • Why private payer policies should be verified separately

Who Should Read This

  • Medical coders
  • Hospital billing staff
  • Compliance officers
  • Physicians documenting observation care
  • Revenue cycle professionals
  • Utilization review staff

Codes Discussed

  • CPT: 99234-99236
  • CPT: 99217-99220
  • HCPCS Level II: G0378

Code Ranges Discussed

  • CPT: 99234-99236
  • CPT: 99217-99220

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