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ModifiedPremera BluecrossPolicy N/A

Site of Service Ambulatory Service Center Select Surgical or Diagnostic Procedures in Adults

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Defines medical necessity criteria for the appropriate site of service (ASC, hospital outpatient, inpatient) for specified elective surgical procedures and which patients or clinical situations require higher-acuity settings.

Policy Summary

PayerPremera Bluecross

PolicySite of Service Ambulatory Service Center Select Surgical or Diagnostic Procedures in Adults

Policy CodePolicy N/A

Change TypeTitle revision and additions (UGI endoscopycardiac procedure codes)

Effective DateApr 8, 2026

Last ReviewApr 1, 2026

Next Review DateN/A

Key ActionObtain prior authorization for the site of service for listed elective surgical or diagnostic procedures; the insurer will review medical necessity for the chosen site.

SourceLink

POLICY UPDATE CHANGES

Title changed from Site of Service Ambulatory Service Center Select Surgical Procedures in Adults to Site of Service Ambulatory Service Center Select Surgical or Diagnostic Procedures in Adults.

Added 2.01.533 Upper Gastrointestinal (UGI) Endoscopy in Adults to the list of surgical or diagnostic procedures that require review for Site of Service ASC for Select Surgical.

Added new Cardiac Surgery section to include implantable loop recorder surgery and added CPT code 33285 and HCPCS code E0616.

This policy has been revised.

Minor clarification made to policy history section.

multipleElective procedures covered

30 miASC access threshold

BMI ≥50Morbid obesity threshold

ASA III+Anesthesia risk cutoff

33285 / E0616New cardiac codes

multiplePolicy history updates

Coverage Criteria — Site of Service Determination

Medical necessity criteria for non-ASC site

Site of service for elective surgical procedures is medically necessary in a higher‑acuity setting when ANY of the following access or clinical conditions are met:

Access-based exceptions: No qualifying ASC within 30 miles that can provide the necessary care OR no geographically accessible ASC that has the necessary equipment OR no geographically accessible ASC at which the individual's physician has privileges OR an ASC's specific guideline prohibits use due to the individual's health condition or weightNo qualifying ASC within 30 miles

Access exceptions allow use of hospital outpatient site

Age or concurrent service: The individual is aged 18 or younger OR the service is being performed in conjunction with an additional service that requires use of a hospital outpatient department, and the procedures are being performed in the same operative sessionage ≤ 18

Allows hospital outpatient site

Policy Summary

PayerPremera Bluecross

PolicySite of Service Ambulatory Service Center Select Surgical or Diagnostic Procedures in Adults

Policy CodePolicy N/A

Change TypeTitle revision and additions (UGI endoscopycardiac procedure codes)

Effective DateApr 8, 2026

Last ReviewApr 1, 2026

Next Review DateN/A

Key ActionObtain prior authorization for the site of service for listed elective surgical or diagnostic procedures; the insurer will review medical necessity for the chosen site.

SourceLink

On This Page

Anesthesia risk: ASA classification III or higher OR personal history of complication of anesthesia OR documentation of alcohol dependence or history of cocaine use OR prolonged surgery (greater than 3 hours)ASA III+; prolonged surgery >3 hours

Higher anesthesia risk justifies hospital outpatient or inpatient site

Cardiovascular risk: Uncompensated chronic heart failure (NYHA class III or IV) OR recent myocardial infarction (less than 3 months) OR poorly controlled, resistant hypertension (requiring 3 or more drugs) OR recent cerebrovascular accident (less than 3 months) OR increased risk for cardiac ischemia (drug‑eluting stent <1 year or angioplasty <90 days) OR symptomatic arrhythmia despite medication OR significant valvular heart diseaserecent MI <3 months; NYHA III/IV

Cardiac conditions require higher‑acuity monitoring

Liver risk: Advanced liver disease (MELD score greater than 8)MELD > 8

Justifies higher‑acuity site

Pulmonary risk: COPD with FEV1 less than 50% OR poorly controlled asthma (FEV1 less than 80% despite treatment) OR moderate to severe obstructive sleep apneaFEV1 thresholds as above

Respiratory risk justifies hospital site

Renal and other risks: End stage renal disease (on dialysis) OR morbid obesity (BMI greater than or equal to 50) OR bleeding disorder requiring replacement factor, blood products, or special infusion product OR anticipated need for transfusion(s)ESRD on dialysis; BMI ≥ 50

These conditions justify higher‑acuity site

ASC Medical Necessity Criteria

Site of Service for Ambulatory Surgical Center (ASC) for select surgical or diagnostic procedures will be considered medically necessary when criteria are met.

ASC Medical Necessity: Procedures listed as select surgical or diagnostic procedures and meeting the policy's clinical criteria and site‑of‑service requirements

Full procedure‑specific clinical criteria and site‑of‑service requirements are described elsewhere in the policy and must be met for ASC placement; prior authorization applies per policy history and coding updates

Inpatient hospital/medical center is not medically necessary for the elective surgical procedures listed when the outpatient/ASC site-of-service criteria are met. The policy specifies that when the access and clinical criteria supporting care in an ambulatory surgical center or hospital outpatient department are satisfied, use of an inpatient hospital/medical center for those elective procedures is considered not medically necessary.

This medical policy does not apply to Medicare Advantage. Members and providers should consult the member benefit booklet or contact customer service to determine coverage for Medicare Advantage plans because those contracts differ in benefits and this policy is not used for Medicare Advantage determinations.

Use of a hospital outpatient department or inpatient hospital for the listed elective procedures is considered not medically necessary when the access-based and clinical criteria for Ambulatory Surgical Center (ASC) placement are met. The policy identifies ASC as the preferred medically necessary site for certain elective surgical procedures and allows hospital outpatient placement only when one of the access exceptions (for example, no qualifying ASC within 30 miles, no geographically accessible ASC with required equipment or physician privileges, or ASC guidelines prohibiting use due to the individual’s condition or weight) or clinical exceptions (such as age ≤ 18 or the need to perform a concurrent service that requires a hospital outpatient department) applies.

Procedures that do not meet the policy's ASC criteria, or procedures performed at an ASC without the required prior review or authorization when review is specified, may be considered not medically necessary for that site of service. The policy requires prior authorization and site-of-service review for listed procedures; failure to meet ASC clinical or site requirements or lack of required review can result in denial of ASC placement or the site being deemed not medically necessary.

Coding — Affected Procedure and Place-of-Service Codes

Breast Surgery CPT codesCPTCovered

19318

Reduction mammaplasty

Cardiac CPT codesCPTCovered

33285

Insertion, subcutaneous cardiac rhythm monitor, including program

Cardiac HCPCS codesHCPCSCovered

E0616

Implantable cardiac event recorder with memory, activator, and programmer

ENT CPT codesCPTCovered

30400	Rhinoplasty, primary; lateral and alar cartilages and/or elevation of nasal tip
30410	Rhinoplasty, primary; complete, external parts including bony pyramid, lateral and alar cartilages, and/or elevation of nasal tip
30420	Rhinoplasty, primary; including major septal repair
31233	Nasal endoscopy, diagnostic, unilateral or bilateral (separate procedure)
31295	Nasal/sinus endoscopy, surgical, with dilation; maxillary sinus ostium
31298	Nasal/sinus endoscopy, surgical, with dilation; frontal and sphenoid sinus ostia

Knee Surgery CPT codesCPTCovered

27415	Osteochondral allograft, knee, open
29866	Arthroscopy, knee, surgical; osteochondral autograft(s) (e.g., mosaicplasty)
29871	Arthroscopy, knee, surgical; for infection, lavage and drainage
29880	Arthroscopy, knee, surgical; with meniscectomy (medial AND lateral, including any meniscal shaving)

Shoulder CPT codesCPTCovered

29805	Arthroscopy, shoulder, diagnostic, with or without synovial biopsy
29827	Arthroscopy, shoulder, surgical; with rotator cuff repair
29828	Arthroscopy, shoulder, surgical; biceps tenodesis

Spinal Procedures CPT codesCPTCovered

63650	Percutaneous implantation of neurostimulator electrode array, epidural
63685	Insertion or replacement of spinal neurostimulator pulse generator or receiver, direct or inductive coupling

Referenced CPT/HCPCS Codes — consolidated listmixed

23700
29805
29806
29807
29819
29820
29821
29822
29823
29824

1–10 of 16

1/2

Place of Service codesRevenue

19	Off-Campus-Outpatient Hospital place of service
21	Inpatient Hospital place of service
22	On Campus-Outpatient Hospital place of service
24	Ambulatory Surgical Center place of service

ASC geographic access — no qualifying ASC within 30 miles

ThresholdNo qualifying ASC within 30 miles that can provide the necessary care

Supporting conditionsNo geographically accessible ASC with necessary equipment

Physician privilegesNo geographically accessible ASC at which the individual's physician has privileges

ASC guideline restrictionASC's specific guideline prohibits use related to the individual's health condition or weight

Morbid obesity threshold

ThresholdBMI ≥ 50

ContextListed as an 'Other' clinical risk that justifies a higher-acuity site

DocumentationProvider must document morbid obesity when using it to justify hospital site selection

Pulmonary function thresholds

COPD thresholdFEV1 < 50%

Poorly controlled asthmaFEV1 < 80% despite treatment

Other pulmonary riskModerate to severe obstructive sleep apnea (OSA) referenced as justification for higher-acuity site

MELD score threshold

ThresholdMELD score greater than 8

ContextListed under 'Liver Risk' as indication for higher-acuity site

ActionDocument advanced liver disease (MELD > 8) to justify hospital outpatient/inpatient site

NYHA Class reference

ScopeNYHA Classes I–IV describe heart failure symptom severity from no symptoms (I) to symptoms at rest (IV)

Class IIIMarked limitation in activity; comfortable only at rest

Class IVSevere limitations; symptoms at rest; mostly bedbound

Provider Actions — Authorization, Documentation, and Review

Prior Authorization

Prior Authorization Required

Prior authorization is required for the site of service for the listed elective surgical and diagnostic procedures. Submit a site-of-service prior authorization request before scheduling the procedure when the requested site is a hospital outpatient department (on- or off-campus) or inpatient facility for procedures that are listed for ASC review.

Required for elective procedures listed in policy
Request must indicate proposed site (ASC vs hospital outpatient/inpatient)
Authorization applies to site of service only, not to procedure coding or separate medical necessity determinations

Documentation Required

Documentation Required for Non-ASC Site

Providers must document clinical justification when requesting a non-ASC site of service. Include the clinical condition(s) that place the patient at increased risk (see examples below), ASA classification when relevant, procedure duration estimates, and any lack of geographically accessible ASC availability or physician ASC privileges.

Clinical risk factors (anesthesia, cardiovascular, pulmonary, hepatic, renal, other)
ASA classification (III or higher) when anesthesia risk cited
If no ASC access: documentation of no qualifying ASC within 30 miles, lack of necessary equipment, or lack of physician privileges
If pediatric (≤18 years) or procedure is performed with another service requiring hospital outpatient department, note those facts

Denial Risk

Denial Risk for Inappropriate Site of Service

Failure to obtain required site-of-service authorization or failure to provide adequate documentation to support a non-ASC site may result in denial or claim payment at a non-preferred (higher) site with increased member cost sharing.

Denials possible for inappropriate or unsupported hospital outpatient/inpatient site requests
Claims may be re-priced to ASC site allowance if authorization not obtained when required

Note

Policy Effective Date and Procedure Inclusion — Provider Note

The policy effective date is 2026-04-08. Procedures added or moved into the list (for example, certain cardiac procedures including implantable loop recorder insertion and selected UGI endoscopy additions) are subject to the prior authorization and documentation requirements on and after the effective dates indicated in the policy history.

Policy effective date: 2026-04-08
Added cardiac procedures (CPT 33285) and HCPCS E0616 included per history
UGI endoscopy inclusion and other timing noted in policy history — check dates when requesting authorization

Note

Procedures Requiring Site-of-Service Review

Certain procedures specifically require site-of-service review to determine whether ASC is the medically necessary site. When requesting an alternative site, clearly state the reason(s) from the policy criteria that justify use of a hospital outpatient department or inpatient setting.

Procedures added to the ASC-review list may include new cardiac and UGI endoscopy codes per policy history
Provide operative session details when the procedure is performed with an additional service requiring hospital outpatient department

Note

ASC Site-of-Service Medical Necessity — Summary

When an ASC site is medically appropriate per policy criteria, ASC is the preferred site of service. Summarize why the ASC is appropriate in the prior authorization submission when applicable.

ASC is preferred when procedure can be safely performed in that setting
If ASC is appropriate, include documentation of ASC availability and physician privileges when requested

Background

Elective surgical procedures can safely be performed in multiple settings (ASC, hospital outpatient, inpatient). The policy encourages selection of the most appropriate, safe, and cost‑effective site by designating the Ambulatory Surgical Center (ASC) as the preferred site for select procedures when clinical and access criteria are met, while defining specific access (for example, no qualifying ASC within 30 miles) and clinical circumstances (for example, ASA classification III+, significant cardiac, pulmonary, hepatic, renal, bleeding risks, morbid obesity with BMI ≥ 50, or pediatric age) that justify higher‑acuity hospital outpatient or inpatient care. Prior authorization and documentation of the clinical rationale are required to support non‑ASC placement.

Definitions and Clinical Classifications

ASA classification reference

DesignationASA I–VI scale for pre‑anesthesia physical status

ASA IIIPatient with severe systemic disease; substantive functional limitations (examples: poorly controlled DM/HTN, COPD, morbid obesity BMI ≥40, ESRD on dialysis)

ASA IV–VASA IV: severe disease that is constant threat to life; ASA V: moribund patient not expected to survive without operation

Advanced liver disease (MELD > 8)

DefinitionAdvanced liver disease defined as MELD score greater than 8

Policy useMELD > 8 listed under 'Liver Risk' to justify higher-acuity site

DocumentationRecord MELD score when using advanced liver disease to support hospital site placement

NYHA classification reference

PurposeNYHA classification used to stratify heart failure severity for cardiovascular risk assessment

Class III–IV relevanceUncompensated chronic heart failure NYHA III or IV is listed as a condition requiring higher-acuity site

Classes definedClass I: no symptoms; Class II: mild symptoms; Class III: marked limitation; Class IV: symptoms at rest

ASA Physical Status Classification (duplicate/reference)

SystemAmerican Society of Anesthesiologists (ASA) Physical Status Classification

FunctionAssesses and communicates pre‑anesthesia medical comorbidities to guide site-of-service decisions

ExamplesIncludes ASA I (healthy) through ASA VI (brain-dead organ donor); ASA III+ noted as higher anesthesia risk

NYHA Classification (duplicate/reference)

SystemNew York Heart Association (NYHA) Classification

Use in policyReferenced to identify uncompensated chronic heart failure (NYHA III/IV) as indication for higher-acuity setting

Class summaryClass I (no symptoms) to Class IV (symptoms at rest)