What is the CPT code for critical care services?

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Adult critical care evaluation and management (E/M) services use time-based CPT codes 99291 and 99292.

Adult Critical Care CPT Codes

  • 99291: First 30 to 74 minutes of critical care on a calendar date (billed only once per day per provider/specialty group).
  • 99292: Each additional 30 minutes (list separately in addition to 99291). Under Medicare rules, a full additional 30 minutes must be met before billing 99292 (e.g., 75–104 minutes requires 99291 + no units of 99292; 105–134 minutes adds one unit of 99292).

Time Thresholds (Medicare/Standard Guidelines)

  • Under 30 minutes: Bill standard E/M service instead of critical care.
  • 30–74 minutes: 99291 (1 unit)
  • 75–104 minutes: 99291 + 99292 (0 add-on units for Medicare; check specific payer rules)
  • 105–134 minutes: 99291 + 99292 (1 unit)
  • 135–164 minutes: 99291 + 99292 (2 units)

What is Included (Bundled)

Critical care codes package routine support services into the time count. You cannot bill these separately when performed during critical care time:

  • Interpretation of cardiac output measurements
  • Chest X-rays, pulse oximetry, blood gases
  • ECGs, blood pressure, and hematologic data
  • Gastric intubation, temporary transcutaneous pacing
  • Ventilator management and vascular access procedures

Key Documentation Rules

  • Medical Necessity: The patient must have acute impairment of vital organ systems with a high probability of imminent, life-threatening deterioration.
  • Exclusive Time: Time spent performing separate, unbundled procedures cannot be counted toward total critical care time.
  • You can review additional administrative definitions and guidelines at the American College of Emergency Physicians FAQ or verify official local contractor billing instructions via the Novitas Solutions Critical Care Guide.

What are the CPT codes for critical care services in 2026?

The CPT codes for adult critical care services in 2026 are 99291 for the initial period and 99292 for additional time.

Critical Care CPT Codes

  • 99291: Reports the first 30 to 74 minutes of direct critical care services provided to a critically ill or injured patient on a given calendar date.
  • 99292: Reports each additional 30-minute increment beyond the initial 74 minutes.

Time Thresholds and Rules (Medicare Guidelines)

  • 30–74 minutes: Bill CPT code 99291 once.
  • 75–104 minutes: Bill 99291. (Note: Under Medicare's full-increment rule for 99292, the first add-on unit is not reportable until cumulative time reaches 104 minutes).
  • 105–134 minutes: Bill 99291 plus 99292 × 2.
  • Less than 30 minutes: Report standard Evaluation and Management (E/M) service codes instead of critical care.

Bundled Services

Routine supportive care services are already bundled into codes 99291 and 99292 and cannot be billed separately. These include:

  • Pulse oximetry
  • ECG (electrocardiogram) interpretations
  • Ventilator management
  • Vascular access procedures
  • Chest X-rays and blood gas analyses

How do you bill for critical care?

Billing for critical care requires meeting specific time thresholds, documenting acute life-threatening organ system failure, and applying the correct CPT codes based on cumulative face-to-face and non-face-to-side provider time.

⏱️ Time-Based CPT Codes

  • 99291: First 30 to 74 minutes of critical care per calendar day.
  • 99292: Each additional 30 minutes (billed as an add-on code).
  • Minimum Threshold: Care must exceed 30 cumulative minutes to qualify.
  • Medicare Add-On Rule: Requires a full additional 30 minutes (104 total minutes) before reporting the first unit of 99292.

📋 Essential Documentation Requirements

  • Medical Necessity: Document acute impairment of vital organ systems and imminent deterioration risk.
  • Discrete Time Tracking: Record exact start and stop times or total cumulative minutes (avoid ranges).
  • Active Management: Note high-complexity decision-making and constant undivided attention.
  • Excluded Time: Subtract time spent performing separately billable procedures.

🛑 Bundled vs. Separately Billable Services

  • Bundled (Included in 99291/99292):
    • Ventilator management
    • Pulse oximetry and blood gases
    • Vascular access and ECG interpretations
  • Separately Billable (Subtract Time):
    • Central venous catheter placement
    • Endotracheal intubation
    • Cardiopulmonary resuscitation (CPR)

👥 Group and Split/Shared Rules

  • Same Specialty Group: Aggregates time; 99291 can only be billed once per day per patient for the group.
  • Split/Shared Visits: Combine physician and non-physician practitioner (NPP) time; the provider spending >50% of cumulative time bills the service using modifier FS.

How often can a CPT 99291 be billed?

CPT code 99291 can be billed only once per calendar date, per patient, by the same physician or physician group of the same specialty.

Billing Rules for CPT 99291

  • Time Requirement: The provider must spend a cumulative total of 30 to 74 minutes providing critical care on that calendar date.
  • Non-Continuous Time: Time does not need to be continuous. You can add up short visits (such as 20 minutes in the morning and 15 minutes in the afternoon) to reach the 30-minute minimum.
  • Group Practices: Physicians in the same group who share the same medical specialty act as a single provider. They cannot each bill 99291 for the same patient on the same day.
  • Different Specialties: Different physician specialties can bill separate critical care units on the same day if the care is medically necessary and not duplicative.
  • Additional Time: If critical care time goes beyond 74 minutes, you report additional blocks of time using add-on code 99292.

What is the CPT code for critical care lasting 1.5 hours?

For 1.5 hours (90 minutes) of total critical care time, report CPT Code 99291 once for the first 30–74 minutes, but the appropriate second code depends on whether the payer follows standard CPT or Medicare rules.

Coding Breakdown for 90 Minutes

  • Standard CPT Guidelines (Commercial Payers): Report 99291 and 99292 x 1. Standard CPT uses midpoint rules, meaning the first add-on code 99292 can be billed once cumulative time reaches 75 minutes (spanning 75 to 104 minutes).
  • Medicare / CMS Guidelines: Report 99291 only. Medicare requires a full additional 30 minutes past the initial 74-minute threshold, meaning you must reach 104 total minutes before billing the first unit of 99292. At 90 minutes, a Medicare claim does not qualify for the add-on code.

Key Rules to Remember

  • Total Duration: Time can be continuous or aggregated across non-continuous blocks on the same calendar date by the same provider or group/specialty rules.
  • Bundled Services: Routine services like pulse oximetry, blood gases, chest X-rays, and ventilator management are included in the critical care code and cannot be billed separately.

CPT Coding for Critical Care Services

9 related questions found

What are the CPT codes for critical care services?

The primary CPT codes for adult critical care services are 99291 for the initial 30 to 74 minutes and 99292 for each additional 30 minutes.

Adult Critical Care Codes

  • CPT 99291: First 30 to 74 minutes of critical care on a calendar date. Used only once per date by the same provider or group/specialty.
  • CPT 99292: Each additional 30 minutes (billed as an add-on code after the initial 74 minutes plus the next threshold).

Time Thresholds (Medicare Example)

  • Under 30 minutes: Use a standard E/M code instead of critical care.
  • 30–74 minutes: Report 99291 (1 unit).
  • 75–104 minutes: Report 99291 + 99292 (x1).
  • 105–134 minutes: Report 99291 + 99292 (x2).

Neonatal and Pediatric Codes

  • Neonates (28 days or younger): Use per-day codes like 99468 (initial) and 99469 (subsequent) rather than the standard adult time-based model.
  • Pediatric (age-specific ranges): Separate code sets apply for young infants and children based on specific intensive care guidelines.

Consult guidance from the Centers for Medicare & Medicaid Services or the American Academy of Professional Coders for specific payer rules and bundled procedure definitions.

What are the new CPT code changes in 2026?

The AMA CPT 2026 code set introduces 418 total editorial changes, which include 288 new codes, 84 deletions, and 46 revisions effective January 1, 2026. CPT (Current Procedural Terminology) codes are standard numbers doctors use to report medical procedures and services.

Major 2026 CPT Code Updates

Digital Health and Artificial Intelligence (AI)

  • Remote Patient Monitoring (RPM): Added five new short-duration codes for monitoring patients over 2 to 15 days in a 30-day period.
  • Management Time: Added two new codes to report management services lasting only 10 minutes in a calendar month.
  • AI Services: Introduced new codes for AI tools that help evaluate coronary plaque, perivascular fat, burn imaging, and cardiac dysfunction.

Surgery and Procedures

  • Leg Revascularization: Deleted old lower-extremity revascularization codes and replaced them with 46 new territory-specific codes (37254–37299).
  • Hearing Devices: Replaced older methods with 12 new codes for hearing device services.

Laboratory and Emerging Tech

  • Proprietary Laboratory Analyses (PLA): Advanced genomics and specialized lab tests make up 27% of all new codes.
  • Category III Codes: Temporary codes for emerging technology also make up 27% of the new additions. You can review professional training options through AAPC Workshops to learn more about application details.

What are the CMS guidelines for billing critical care services?

CMS guidelines for billing critical care services require providers to use specific time-based CPT codes, meet strict medical necessity criteria for acute life-threatening conditions, and follow unique Medicare time accumulation rules.

Core CPT Codes & Time Rules

  • CPT 99291: Report for the first 30 to 74 minutes of critical care provided on a single calendar day. It can only be billed once per patient, per date of service.
  • CPT 99292: Report as an add-on code for each additional 30-minute increment.
  • The 104-Minute Rule: Unlike standard CPT guidelines that allow billing 99292 at 75 minutes using standard rounding, CMS requires a full additional 30 minutes past the initial 74 minutes—meaning you must reach 104 total minutes before billing the first unit of 99292 (74 + 30 = 104).
  • Total Time Documentation: The medical record must state the exact total minutes spent personally providing care. Non-continuous blocks of time on the same date may be added together.

Definition & Medical Necessity

  • Critical Illness/Injury: Documentation must show an acute condition with severe impairment of one or more vital organ systems and a high probability of imminent, life-threatening deterioration.
  • Active Management: Care must involve active, direct medical decision-making and treatment by the practitioner. A serious diagnosis alone does not justify critical care.
  • Excluded Activities: Time spent on teaching, telephone calls off the unit, or chart reviews without the patient present does not count toward critical care time.

Bundled Services

Routine supportive care is already bundled into critical care codes and cannot be billed separately. Bundled items include:

  • Chest X-rays
  • Pulse oximetry
  • Blood gases
  • Gastric intubation
  • ECG / EKG data collection and interpretation
  • Ventilator management
  • Vascular access procedures

Split/Shared Visits & Same-Day E/M

  • Split/Shared Critical Care: When a physician and an advanced practice provider (NPP) from the same group practice jointly care for a patient, the provider performing the substantive portion (more than 50% of the total cumulative time) bills the service. Append modifier -FS. The 104-minute threshold still applies to combined time before adding 99292.
  • Same-Day Other E/M: If a non-critical E/M visit occurs earlier on the same day before the patient deteriorated into a critical state, both visits may be billed if documented as separate and distinct. Append modifier -25 to the critical care code.

Can two providers bill for critical care?

Yes, two providers can bill for critical care on the same day, but only if their care is distinct, non-duplicative, and performed during separate time intervals.

Rules for Different Specialties

  • Independent Billing: Multiple providers of different specialties (e.g., an emergency physician in the ED and an intensivist later in the ICU) can each bill independently for critical care.
  • No Overlap: Their documented time intervals cannot overlap, and each provider must manage different or evolving aspects of the patient's critical condition with separate medical necessity.

Rules for Same Group or Specialty

  • Aggregated Time: If the providers are in the same tax ID group and the same specialty/subspecialty, their times are combined.
  • Single Bill: They cannot bill separate units of the primary critical care code (99291) for the same patient on the same day; the group reports the cumulative time under one provider's National Provider Identifier (NPI).

Split/Shared Critical Care (Physician + APP)

  • Same Group: A physician and an Advanced Practice Provider (APP / NPP) in the same group practice can pool their time for a split/shared critical care visit.
  • Substantive Portion: The provider who spends more than 50% of the total cumulative time providing direct critical care reports the service.
  • Modifiers: A specific claim modifier (such as modifier -FS) is generally required for split/shared encounters.

What conditions qualify for critical care?

Critical care is required for any acute illness or injury that acutely impairs one or more vital organ systems and carries a high probability of imminent, life-threatening deterioration.

Common Qualifying Conditions

Medical emergencies that frequently require intensive care management include:

  • Sepsis and Septic Shock: A severe, systemic body response to infection that can rapidly lead to multi-organ failure.
  • Acute Respiratory Failure and ARDS: Severe breathing difficulties requiring mechanical ventilation or advanced oxygen support.
  • Cardiovascular Crises: Heart attacks (myocardial infarction), cardiogenic shock, and severe heart failure.
  • Acute Strokes: Ischemic or hemorrhagic strokes causing sudden, dangerous loss of brain function.
  • Severe Trauma: Major accidents involving head injuries, multiple fractures, or internal bleeding.
  • Acute Organ Failure: Sudden failure of the kidneys, liver, or multiple organ systems requiring interventions like dialysis.
  • Poisoning or Overdose: Severe toxic reactions or drug overdoses compromising vital signs.

Clinical Criteria

According to clinical and coding definitions (such as those from the American Academy of Professional Coders), qualifying for critical care depends on the severity of the patient's physiological derangement, not just their specific diagnosis or physical location in a hospital. Even a stable patient may qualify if continuous, high-complexity medical management is actively preventing imminent deterioration. You can review a detailed list of treated diagnoses directly via the Mayo Clinic Critical Care Section.