CurrentBlue Cross Blue Shield - New MexicoPolicy CPCP032

Intraoperative Neurophysiology Monitoring (IONM) Coding and Reimbursement Policy

This policy governs coding, billing, supervision, documentation, and reimbursement for intraoperative neurophysiologic monitoring (IONM) services (including evoked potentials) provided to members under BCBSNM plans.

Policy Summary

PayerBlue Cross Blue Shield - New Mexico

PolicyIntraoperative Neurophysiology Monitoring (IONM) Coding and Reimbursement Policy

Policy CodePolicy CPCP032

Change TypeNo material change

Effective DateSep 12, 2023

Next Review DateN/A

Key ActionMonitoring physician must be licensed and separate from the surgical team and either be physically present in the operating suite or provide real-time remote monitoring with continuous availability and live bidirectional audio plus screen sharing.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

95940, 95941, G0453Primary codes addressed

Live audio + screenRemote monitoring requirement

Professional paySeparately reimbursable

Baseline excludedTiming exclusion

Separately Reimbursable IONM — Coverage Criteria

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Separately reimbursable IONM criteria

Separately reimbursable IONM professional services must meet ALL of the following:

ALL of the following

Provided to the operating surgeon (ordering physician) by a licensed physician separate from the surgical team (operating surgeon, assistant surgeons, and/or anesthesiologists).
AND one of
- Interpreting physician physically in attendance in the operating suite.
- ALL of the following
  - Interpreting physician is constantly available to interpret the recording and advise the surgeon.
  - Live video (screen sharing) representation of the END monitoring (identical to the information seen by the technician) with a high-quality bidirectional live audio connection that allows the remote interpreting physician to converse with the operating surgeon at any time (cell phone or cellular walkie‑talkie is not adequate; review post‑operatively does not constitute live monitoring).
Documentation captured in the event/chat log during monitoring must support reimbursement and include, as applicable: evidence the IONM service was requested by a licensed physician separate from the surgical team; audio and video/screen‑sharing connection details; baseline review completed verbally with the surgeon; communication of events to the surgeon; closing review; professional component and test interpretation; start and stop times; what was communicated, by whom, and how; and name and credentials of technologist.
Services of the in‑room technician and monitoring equipment are not separately payable from reimbursement to the monitoring physician (or monitoring company); reimbursement for technician services and equipment may be negotiated directly with the facility.

Codes, Billing Units, and Timing Guidance

Covered codes and guidanceCPT | HCPCS | mixedCovered

95940	Intraoperative neurophysiology monitoring, one-on-one in operating room, per 15 minutes (single patient, in-room)
95941	Intraoperative neurophysiology monitoring, remote/nearby location, per hour (may cover overlapping sessions)
G0453	Undivided attention monitoring by a single provider for one member, billed in 15-minute units

Minimum billable time per unit — unit thresholds and midpoint rule for units

CPT 95940Billed per 15‑minute unit when monitoring is performed in‑room one‑on‑one; a unit is not attained for 7 minutes or less (must exceed 7 minutes)

CPT 95941Billed per hour unit for remote/nearby monitoring (may cover overlapping sessions); a unit is not attained for 30 minutes or less

HCPCS G0453Billed in 15‑minute units for undivided attention to a single member; a unit is not attained for 7 minutes or less; units reflect cumulative one‑on‑one monitoring time even if non‑contiguous

Midpoint rule for unit attainmentA unit of time is attained when the midpoint has passed (e.g., 37 minutes = 2 units for G0453; 2 hours 31 minutes needed for 3 units of 95941)

Provider Responsibilities and Prior Authorization

Prior Authorization

Prior authorization / provider responsibilities — licensing, presence, remote monitoring & documentation

The monitoring (interpreting) physician must be a licensed physician who is separate from the surgical team and must either be physically present in the operating suite or provide real-time remote monitoring with continuous availability and high-quality bidirectional live audio plus live video (screen sharing). Documentation of these arrangements and activities must be captured in the event/chat log, including that the operating surgeon requested the IONM service by a licensed physician separate from the surgical team, the type of audio/video connection, that the monitoring physician completed baseline and closing reviews verbally with the surgeon, communications of events, start/stop times, and the technologist’s name and credentials.

Licensed interpreting physician must be separate from operating surgeon, assistant surgeons, and anesthesiologists.
Interpreting physician must be physically in attendance in the operating suite OR present via real-time remote monitoring with: constant availability to interpret and advise, live video (screen sharing) identical to technician view, and high-quality bidirectional live audio that permits conversation with the surgeon (cell phone or walkie-talkie not adequate).
Event/chat log documentation must record surgeon request for licensed separate physician, the audio/video connection type, baseline/closing verbal reviews, communications of events, start and stop times, and technologist name/credentials.

Key Definitions

Evoked potentials (EP) — definition

DefinitionEvoked potentials (EP) are responses (electrical signals) produced by the nervous system in response to a stimulus

PurposeUsed to diagnose nerve disorders and to determine or localize the site of nerve damage

Clinical use in IONMMay be used intraoperatively (e.g., SSEP, MEP, BAEP) to monitor neural pathway integrity and help prevent permanent deficits

Event/Chat log — definition and required documentation

DefinitionEvent/Chat log documents communications, start/stop times, provider identities, and events captured during monitoring

Required contents (examples)Operating surgeon request, audio/video connection type (e.g., VOIP or screen sharing), baseline review, event communications, closing review

Additional contentsStart and stop times of services, what was communicated, who communicated it, and technologist name/credentials