DraftUnitedHealthcarePolicy CS109NJ.T

Surgery of the Shoulder (for New Jersey Only)

Defines medical policy for shoulder surgical procedures in New Jersey, including linkage to InterQual criteria for shoulder arthroscopy and joint replacement, and states the payer stance on subacromial balloon spacers for massive irreparable rotator cuff tears.

Policy Summary

PayerUnitedHealthcare

PolicySurgery of the Shoulder (for New Jersey Only)

Policy CodePolicy CS109NJ.T

Change TypeAdded codesrevised InterQual referencesclarified coverage stance

Effective DateNov 1, 2025

Next Review Date

Key ActionSubmit prior authorization and supporting documentation when seeking coverage for shoulder procedures listed; added CPT 23473 and 23474 may be subject to prior authorization and medical necessity review.

SourceLink

POLICY UPDATE CHANGES

Added CPT codes 23473 and 23474 to Applicable Codes.

Revised language pertaining to medical necessity clinical coverage criteria and removed references to some InterQual procedure lists while adding reference to InterQual CP: Procedures, Removal and Replacement or Revision, Joint Replacement, Shoulder.

Added explicit statement that subacromial balloon spacers for rotator cuff tears are unproven and not medically necessary due to insufficient evidence of efficacy.

InterQualExternal clinical criteria sources cited

Multiple SRs & RCTsEvidence base reviewed

3.6%Device-related complication rate

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Coverage Criteria — Shoulder Surgery and Subacromial Balloon Spacers

General shoulder surgery coverage

Covered when supported by InterQual clinical criteria.

InterQual-referenced coverage: Shoulder surgical procedures (arthroscopy, arthroscopically assisted surgery, diagnostic arthroscopy, joint replacement, removal/revision) meet medical necessity when they satisfy the referenced InterQual CP: Procedures criteria for the specific procedure listed in the policy (Arthroscopy or Arthroscopically Assisted Surgery, Shoulder; Arthroscopy, Diagnostic, +/- Synovial Biopsy, Shoulder; Joint Replacement, Shoulder; Removal and Replacement or Revision, Joint Replacement, Shoulder).

Clinicians must refer to the InterQual criteria linked in the policy for the detailed medical necessity rules and indications.

Subacromial Balloon Spacers (SABS) — Not medically necessary / Research only

Stance on Subacromial Balloon Spacers (SABS).

SABS coverage stance: Subacromial balloon spacers (biodegradable subacromial spacers, e.g., InSpace) for the treatment of rotator cuff tears are considered unproven and not medically necessary due to insufficient and low-quality evidence of efficacy. When debridement is a suitable option, debridement should be preferred; when debridement is not suitable, spacer insertion should be limited to use in research settings per external guidance (NICE).

Policy cites multiple systematic reviews, RCTs, and evidence assessments finding minimal or uncertain support for clinical benefit and limited long-term data; device is biodegradable and designed to degrade over ~12 months.

Not Medically Necessary

Policy coverage stance and clinical rationale.

Not medically necessary (unproven): Subacromial balloon spacers for the treatment of rotator cuff tears are considered unproven and not medically necessary because available studies are small, short-term, often nonrandomized or industry‑sponsored, and provide insufficient comparative and long-term evidence of clinically meaningful benefit.

Evidence assessments (Hayes, ECRI) and systematic reviews indicate inconclusive comparative effectiveness and limited follow-up beyond two years; NICE recommends preference for debridement when suitable and research-only use when not suitable.

Operational rationale and evidence limits: Key evidence limitations include short follow-up in many studies (most ≤2 years), heterogeneity of study designs and concomitant procedures, a small number of randomized trials, and potential bias from industry sponsorship; these factors prevent concluding sustained superiority over debridement or partial repair.

External guidance: NICE guidance (2023) states: when debridement is a suitable option, biodegradable subacromial spacer insertion should not be used; when debridement is not suitable, spacer insertion should be used only in research, ideally randomized trials with at least 2-year follow-up and multidisciplinary patient selection and appropriately trained surgeons.

Per external guidance, when debridement is a suitable option, biodegradable subacromial spacer insertion should not be used. If debridement is not suitable, NICE recommends that spacer insertion only be considered in the context of research. Clinicians should therefore prioritize arthroscopic debridement where appropriate and reserve spacer use for investigational settings consistent with the guidance cited.

The National Institute for Health and Care Excellence (NICE) 2023 interventional procedures guidance explicitly states that when debridement is a suitable option, biodegradable subacromial spacer insertion for rotator cuff tears should not be used, and that when debridement is not suitable, spacer insertion should be used only in research; NICE also advises randomized trials with at least 2 years follow‑up and multidisciplinary patient selection and trained surgeons for the procedure.

UnitedHealthcare considers subacromial balloon spacers (SABS) for the treatment of rotator cuff tears unproven and not medically necessary due to insufficient and low‑quality evidence of efficacy. Multiple evidence reviews and assessments report short follow‑up, small or nonrandomized studies, variability in study design, and potential industry bias, and the policy was revised to add an explicit statement that SABS are unproven and not medically necessary.

To clarify policy intent: subacromial balloon spacers remain an unproven intervention and are considered not medically necessary for rotator cuff tear treatment outside of research. This policy language reflects the evidence assessments summarizing minimal supportive data for clinical benefit, methodological limitations of available studies, and the policy revision that added this explicit coverage determination.

Coding — Procedure Codes Related to Shoulder Surgery

Shoulder arthroplasty codesCPT

23470	Arthroplasty, glenohumeral joint; hemiarthroplasty.
23472	Arthroplasty, glenohumeral joint; total shoulder (glenoid and proximal humeral replacement (e.g., total shoulder).
23473	Revision of total shoulder arthroplasty, including allograft when performed; humeral or glenoid component

Arthroscopic shoulder procedure codesCPT

23474	Revision of total shoulder arthroplasty, including allograft when performed; humeral and glenoid component.
29805	Arthroscopy, shoulder, diagnostic, with or without synovial biopsy (separate procedure).
29806	Arthroscopy, shoulder, surgical; capsulorrhaphy.
29807	Arthroscopy, shoulder, surgical; repair of slap lesion.
29819	Arthroscopy, shoulder, surgical; with removal of loose body or foreign body.
29820	Arthroscopy, shoulder, surgical; synovectomy, partial.
29821	Arthroscopy, shoulder, surgical; synovectomy, complete.
29822	Arthroscopy, shoulder, surgical; debridement, limited, 1 or 2 discrete structures (e.g., humeral bone, humeral articular cartilage, glenoid bone, glenoid articular cartilage, biceps tendon, biceps anchor complex, labrum, articular capsule, articular side of the rotator cuff, bursal side of the rotator cuff, subacromial bursa, foreign body[ies]).
29823	Arthroscopy, shoulder, surgical; debridement, extensive, 3 or more discrete structures (e.g., humeral bone, humeral articular cartilage, glenoid bone, glenoid articular cartilage, biceps tendon, biceps anchor complex, labrum, articular capsule, articular side of the rotator cuff, bursal side of the rotator cuff, subacromial bursa, foreign body[ies]).
29824	Arthroscopy, shoulder, surgical; distal claviculectomy including distal articular surface (Mumford procedure).

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Applicable CPT Codes (added)CPT

23473	procedure code added (as listed in policy changes)
23474	procedure code added (as listed in policy changes)

Rotator cuff tear size (trial inclusion)

Trial inclusion size thresholdFull‑thickness massive rotator cuff tear measuring ≥ 5 cm and involving ≥ 2 tendons (MRI within 9 months of enrollment).

Age requirement (trial)≥ 40 years (Verma et al. RCT inclusion).

Other trial inclusion criteriaFunctional deltoid and preserved passive ROM; VAS > 30 mm; failed conservative therapy ≥ 4 months.

Provider Actions, Prior Authorization, and Billing Notes

Documentation Required

Applicable Procedure Codes (reference)

The following procedure and diagnosis codes are provided for reference only and may not be all-inclusive. Listing of a code in this policy does not imply that the service described by the code is a covered or non‑covered health service, a right to reimbursement, or a guarantee of claim payment. Benefit coverage is determined by applicable federal, state, or contractual requirements and applicable law; these requirements govern if they conflict with this policy. Verify member benefits and prior authorization requirements with UnitedHealthcare prior to providing services.

CPT codes listed below are for reference only; inclusion does not imply coverage.
Verify benefits, prior authorization, and medical necessity requirements with the payer and applicable contractual or state/federal mandates.

Documentation Required

NICE guidance and debridement preference

When debridement is a clinically suitable option for treating a rotator cuff tear, NICE guidance recommends that biodegradable subacromial spacer insertion should not be used. If debridement is not suitable, NICE recommends use of spacers only in the context of research. If a spacer is used because debridement is unsuitable, document the clinical rationale and multidisciplinary evaluation supporting that debridement was not appropriate for the patient.

Background — Clinical Context and Evidence Summary

Massive irreparable rotator cuff tears (MIRCTs) present a complex clinical problem with multiple management pathways. Options include arthroscopic debridement, partial rotator cuff repair, tendon transfers, superior capsular reconstruction, and reverse total shoulder arthroplasty. Biodegradable subacromial balloon spacers (e.g., InSpace) have been proposed as a minimally invasive spacer to reduce friction and improve function, but available studies are limited by short follow‑up, small sample sizes, and design variability; NICE guidance recommends debridement where appropriate and restricts spacers to research when debridement is unsuitable.

Definitions and Device Descriptions

InSpace Subacromial Tissue Spacer System — device description

Device nameInSpace Subacromial Tissue Spacer System (Stryker).

DescriptionMinimally invasive, biodegradable balloon spacer placed in the subacromial space to eliminate friction between the acromion and humeral head/rotator cuff and to restore shoulder function and reduce pain.

Design attributesPreserves musculoskeletal and bone tissues, does not require anchors or a permanent implant, and is intended to biodegrade over ~12 months.

FDA status (informational)FDA DeNovo classified as a Class II device (Indication includes treatment of massive, irreparable full‑thickness rotator cuff tears in patients ≥ 65 years).

MIRCT / MRCT — definition

TermMIRCT / MRCT — Massive, irreparable rotator cuff tears.

Revision History and Policy Changes

2025-11-01policy_revisionLatest

Revised medical necessity language to update InterQual references (added CP: Procedures, Removal and Replacement or Revision, Joint Replacement, Shoulder; removed some prior InterQual procedure lists), added statement that subacromial balloon spacers are unproven and not medically necessary due to insufficient evidence, and updated clinical evidence and references.

2025-11-01coding_update

Added CPT codes 23473 and 23474 to the Applicable Codes list.