CurrentMolina HealthcarePolicy N/A

Anesthesia Bundling Policy U R

Defines Molina Healthcare's reimbursement and billing guidelines for anesthesia CPT/HCPCS codes, explains which services are considered bundled into primary anesthesia codes versus when separate reimbursement may be allowed, documentation and modifier requirements, recovery process, and coding references. Applies to Molina payers with state exceptions noted.

Policy Summary

PayerMolina Healthcare

PolicyAnesthesia Bundling Policy U R

Policy CodePolicy N/A

Change TypeTemplate update; link review; initial creation

Effective Date

Next Review Date

Key ActionBundle CPT codes billed with an anesthesia code into the primary anesthesia code unless all criteria for separate reimbursement are met and appropriate modifier and documentation are provided.

SourceLink

POLICY UPDATE CHANGES

Reviewed links on 12/12/2024

Updated template on 07/30/2025

Policy initially created on 10/23/2023

10Example anesthesia CPT codes listed

4Modifiers preferred over 59

Policy overview

Anesthesia CPT/HCPCS codes are intended to cover the full anesthesia care package including preoperative evaluation, standard preparation and monitoring, administration of anesthesia, and post-anesthesia recovery. National Correct Coding Initiative (NCCI) edits combine standard preparation, monitoring, and procedural services into anesthesia codes, so related services billed with an anesthesia code are generally assumed to be bundled into the primary anesthesia code unless specifically indicated as separate and distinct. Separate reimbursement for services billed with an anesthesia code is allowed only when the service is truly distinct from the anesthesia service, medically necessary, and supported by documentation and appropriate modifiers. This policy defines Molina Healthcare's reimbursement and billing guidelines for anesthesia CPT/HCPCS codes and applies to Molina payers, with state exceptions noted in the policy.

Code references and modifiers

Representative Anesthesia CPT codes (examples listed in policy)CPT

00100	Anesthesia for procedures on the eyelids
00300	Anesthesia for procedures on the nose and accessory sinuses
00400	Anesthesia for procedures on the lips
00532	Anesthesia for procedures on the salivary glands
00740	Anesthesia for procedures on the liver, biliary tract, or pancreas
00810	Anesthesia for procedures on the upper anterior abdominal wall
00902	Anesthesia for procedures on the female genital system
01402	Anesthesia for procedures on the spine and spinal cord
01610	Anesthesia for procedures on the upper arm and elbow
01991	Anesthesia for procedures on the lower leg and ankle

Modifiers referenced for separate reimbursementModifier

XE	Separate encounter, a service that is distinct because it occurred during a separate encounter
XU	Unusual non-overlapping service
XP	Separate practitioner
XS	Separate structure
59	Distinct procedural service (use only when no other specific modifier applies)

When a service billed with an anesthesia code meets criteria for separate reimbursement, append an appropriate modifier to indicate independence from the anesthesia service. Prefer the CMS-specific modifiers XE, XU, XP, XS over modifier 59 whenever possible; use 59 only when no other specific modifier applies. Ensure proper medical and procedural documentation is retained to support the modifier and the service's distinctness to avoid delays, denials, or audits.

Billing, documentation, and audit actions

Billing Rule

Bundle unless independent

When CPT codes are billed with an anesthesia code they are generally considered part of the anesthesia service and will be bundled into the primary anesthesia code unless criteria for separate reimbursement are met.

Assume preparation, monitoring, and procedural services billed with anesthesia are included in the anesthesia code
Separate reimbursement only when service is distinct and independent from anesthesia
Provide appropriate modifier and documentation to demonstrate independence

Billing Rule

Modifier usage required for separate reimbursement

Append XE, XU, XP, XS or 59 (only if no other applies) to the CPT code to indicate the service was independent of anesthesia; prefer XE/XU/XP/XS over modifier 59 and ensure documentation supports the modifier.

Use XE, XU, XP, XS, or 59 (59 only when no other specific modifier applies)
Prefer XE/XU/XP/XS over 59 whenever applicable
Ensure supporting medical documentation justifies modifier selection

Documentation Required

Maintain supporting documentation

Retain detailed description of service, medical necessity, and procedure/operative notes establishing the service's independence from anesthesia to support separate reimbursement; failure to include required documentation may lead to delays, denials, or audits.

Detailed description of the service provided and medical necessity
Documentation establishing the service as distinct and independent from the anesthesia service
Supporting clinical documentation such as operative reports or procedure notes

Billing Rule

Fee schedule and contract determine reimbursement

Molina reimbursement amounts determined by applicable fee schedules and provider contract terms; comply with state Medicaid/CMS billing guidelines.

Billing Rule

Overpayment recovery

If audits identify overpayments, Molina will recoup amounts from future payments or directly from the provider; underpayments will be reimbursed.

Overpayments may be recovered via recoupment from future payments or direct collection
Identified underpayments will be reimbursed

Policy Summary

PayerMolina Healthcare

PolicyAnesthesia Bundling Policy U R

Policy CodePolicy N/A

Change TypeTemplate update; link review; initial creation

Effective Date

Next Review Date

SourceLink

On This Page

OpenPayer

Anesthesia Bundling Policy U R

Policy overview

Coverage and bundling rules

Code references and modifiers

Billing, documentation, and audit actions

Key definitions

Policy revision history