Critical Care / Medicare Internet-Only Manual rules

Why This Topic Matters

Critical care coding is heavily time-based and tightly governed by Medicare policy, making accurate documentation and claim submission essential. This article helps readers recognize the broad compliance issues that can affect payment, claim selection, and audit risk.

Article Sections

1. Use of Critical Care Codes

   Overview of Medicare’s definition of critical care and the general circumstances under which the service may be reported. Includes references to neonatal, infant, and pediatric guidance and the relationship to CPT guidance.

2. Critical Care Services and Medical Necessity

   Discusses when critical care is considered medically necessary and when another E/M service may be more appropriate. Includes discussion of chronic illness scenarios and example patient situations.

3. Critical Care Services and Full Attention of the Physician

   Explains the time and attention expectations associated with critical care reporting. Addresses where time may be counted and the requirement that the physician be fully devoted to the patient during the billed period.

4. Critical Care Services and Qualified Non-Physician Practitioners (NPP)

   Covers Medicare payment considerations for critical care furnished by qualified non-physician practitioners. Includes scope of practice, supervision, collaboration, and billing requirements.

5. Critical Care Services and Physician Time

   Describes time-based reporting principles for critical care, including documentation expectations, aggregation of time, and the relationship between the initial and subsequent critical care codes. Also covers special situations such as off-unit time, split/shared services, unbundled procedures, and family discussions.

6. Hours and Days of Critical Care that May Be Billed

   Outlines how critical care time is measured across a calendar date and how Medicare reviews billed hours. Includes examples of time intervals and a sample time-based reporting framework.

7. Critical Care Services and Other Evaluation and Management Services Provided on Same Day

   Addresses how critical care interacts with other E/M services furnished on the same date. Explains the general billing relationship when critical care is provided during an emergency department or inpatient encounter.

8. Critical Care Services Provided by Physicians in Group Practice(s)

   Covers reporting when multiple physicians or specialties in a group practice provide critical care to the same patient. Includes discussion of non-duplicative services, specialty distinctions, and same-day reporting.

9. Critical Care Services and Other Procedures Provided on the Same Day by the Same Physician as Critical Care Codes 99291 - 99292

   Lists procedure categories that are considered part of the critical care service when performed on the same day. Notes that other medically necessary procedures may be separately reportable.

10. Global Surgery

    Explains how critical care interacts with procedures that have a global surgical period. Covers separately identifiable services, postoperative care, and transfer-of-care situations.

11. Critical Care Services Provided During Preoperative Portion and Postoperative Portion of Global Period of Procedure with 90 Day Global Period in Trauma and Burn Cases

    Describes preoperative and postoperative critical care reporting in trauma and burn contexts. Includes the documentation framework and Medicare’s reliance on ICD-9-CM trauma code ranges.

12. Teaching Physician Criteria

    Summarizes teaching physician requirements for critical care billing. Includes presence, documentation, and resident participation expectations.

13. Ventilator Management

    Addresses Medicare treatment of ventilator management services in relation to evaluation and management billing. Explains the broad reporting relationship with critical care and other E/M services.