Can CPT 99291 be billed with modifier 25?

Yes, CPT code 99291 can be billed with modifier 25 (Significant, Separately Identifiable Evaluation and Management Service by the Same Physician on the Same Day of the Procedure or Other Service) under specific circumstances.

When and How Modifier 25 Applies

• Same-Day E/M and Critical Care: If a physician or qualified healthcare professional provides a separate, distinct Evaluation and Management (E/M) service earlier in the day before the patient deteriorates and requires critical care (or for a completely separate problem), modifier 25 is appended to the E/M code (not 99291 itself) to show the initial visit was independent of the critical care.
• Same-Day Non-Bundled Procedures: When reporting CPT 99291 alongside a separately billable (non-bundled) procedure on the same calendar day, modifier 25 may be required by CMS or specific commercial payers to signal that the critical care service was distinct and not part of the procedure's global package or bundled rules.
• Where Modifier 25 Goes: When billing an outpatient/office or hospital E/M service on the same day as a separate procedure or critical care transition, modifier 25 is placed on the E/M service code, not code 99291. Placing modifier 25 directly on 99291 when no separate E/M occurred often triggers coding denials (such as a modifier-to-code inconsistency).

Note: CPT guidelines themselves do not strictly require modifier 25 for critical care alone, but many payers (including Medicare and commercial plans) require it depending on the exact combination of same-day procedures, global surgical periods, or separate E/M visits.

CPT code 99291 does not require a modifier in most standard billing scenarios, but specific clinical or reporting circumstances require one.

Common Modifiers Used with 99291

• Modifier FS: Required for split or shared critical care services when a physician and a non-physician practitioner (NPP) in the same group combine their time, and the provider who performed more than half (substantive portion) of the total time submits the claim.
• Modifier FT: Appended when critical care services are unrelated to a concurrent surgical global period (provided before, after, or on the same day as a procedure) to show the services are distinct and stand alone.
• Modifier 25: Occasionally used if a significant, separately identifiable evaluation and management service is provided by the same physician on the same day as a procedure that is not already bundled into critical care guidelines (though standard critical care itself generally does not require -25 for bundled services).

CPT code 99291 is billed for the first 30 to 74 minutes of critical care evaluation and management for a critically ill or critically injured patient.

Time Requirements

• Minimum threshold: You must spend at least 30 cumulative minutes providing critical care on a single calendar date to report CPT Code 99291.
• Maximum duration: The code covers time from 30 up to 74 minutes. Time of 75 minutes or more transitions into add-on code 99292 (though Medicare rules may differ slightly regarding exact increments).
• Cumulative time: Non-continuous blocks of time on the same calendar date by the same provider or same specialty group can be added together.

Clinical Criteria

• Acute impairment: The patient must face acute impairment of one or more vital organ systems with a high probability of imminent or life-threatening deterioration.
• Active management: Care requires high-complexity decision making and constant, active attention from the provider. Simply being in an ICU or placed on a ventilator does not automatically qualify.

Frequency and Limitations

• Once per day: 99291 can only be billed once per patient, per calendar date, by the same physician or physician group of the same specialty.
• Under 30 minutes: If total critical care time is less than 30 minutes, do not use 99291. Instead, bill a standard evaluation and management code (such as subsequent hospital care or emergency department visit) appropriate for the site of service.
• Inclusive procedures: Many routine services (such as interpretation of chest X-rays, blood gases, data interpretation, or vascular access) are bundled into critical care codes and cannot be billed separately.

Do not use CPT modifier 25 when the evaluation and management (E/M) service is an integral, routine part of a procedure or when the visit's sole purpose is to perform that procedure.

When Not to Use Modifier 25

• Routine Pre-operative or Post-operative Care: Do not use it for standard, expected pre-op exams (like getting basic consent) or routine post-op checkups that are already included in the global fee of a procedure.
• Sole Purpose is a Procedure: Do not use it when a patient comes in just for a minor procedure (such as a simple lesion removal) and there is no separate, medically necessary E/M service provided.
• Decision for Major Surgery: Do not use modifier 25 when an E/M visit results in the decision to perform a major surgery with a 90-day global period; use modifier 57 instead.
• No Separate Documentation: Do not use it if the medical record does not clearly show a distinct, stand-alone problem and separate medical decision-making that goes beyond the normal work of the procedure.
• Inappropriate Codes: Do not append modifier 25 to code G2211 or code 99211.
• Different Specialties / Providers: Do not use it if the E/M service and the procedure are performed by different, unrelated specialties or separate group practices where rules do not allow it.
• Scheduled Procedures without New Issues: Do not use it for a pre-scheduled, routine procedure where no new, distinct symptoms or unexpected problems are evaluated during the encounter.

You can review the official guidance provided by the American Medical Association for more details on correct billing practices.

CMS guidelines for billing modifier 25 require a significant, separately identifiable Evaluation and Management (E/M) service performed by the same physician or qualified healthcare professional on the same day as another procedure or service.

Core Rules and Usage

• Appended to E/M Codes Only: Modifier 25 is added only to the E/M visit code (such as office or emergency department visits), not to the procedural code.
• Above and Beyond: The E/M work must go well beyond the usual pre-operative and post-operative care tied to the minor procedure.
• Same Day: Both the E/M service and the procedure must occur on the exact same calendar date by the same provider or same-specialty group.
• Different Diagnoses Not Required: CPT and CMS do not require a separate diagnosis code for the E/M service and the procedure, though medical necessity must exist for both.

Documentation Requirements

• Separate Notes: The patient record must clearly separate the documentation for the E/M visit from the documentation for the procedure.
• Justified Medical Necessity: Notes must show why the separate visit happened, including distinct history, examination, or medical decision-making.
• No Routine Tasks: Standard pre-procedure steps—like taking routine vital signs, checking blood pressure, or getting standard consent—cannot be counted as the separate E/M service.