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Outpatient Surgical Procedures - Site of Service
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Defines when outpatient surgical procedures performed in a hospital outpatient department are medically necessary versus when ambulatory surgical center (ASC) care is appropriate; applies to UnitedHealthcare Commercial and Individual Exchange benefit plans (with listed exceptions).
Added language to indicate this policy does not apply to Individual Exchange benefit plans in certain states.
Removed CPT codes 26530, 26535, 29800, 29804, 29805, 29830, 29840, and 29860 from Commercial Plans code list.
Added reference link to the Medical Policy titled Surgery of the Wrist or Thumb.
Updated definitions for ASA Physical Status Classification System Risk Scoring Tool and Poorly Controlled Hypertension.
Updated References section to reflect the most current information
When Hospital Outpatient Department Use Is Medically Necessary
Medically necessary clinical indications for hospital outpatient department
Covered when ANY one of the following clinical or procedural conditions is present:
Clinical or procedural conditions warranting hospital outpatient department
- Advanced liver disease (Model for End-Stage Liver Disease score > 8)
- Advance surgical planning determines the individual requires overnight recovery and care following the procedure
- Anticipated need for transfusion
- Bleeding disorder requiring replacement factor or blood products or special infusion products to correct a coagulation defect
- Cardiac arrhythmia: symptomatic arrhythmia despite medication
- Chronic obstructive pulmonary disease (FEV1 < 50%)
- Coronary artery disease or peripheral vascular disease with ongoing cardiac ischemia requiring medical management or recently placed (within 1 year) drug-eluting stent
- Developmental stage or cognitive status warranting use of a hospital outpatient department
- End-stage renal disease receiving peritoneal dialysis or hemodialysis (hyperkalemia above reference range)
- Recent cerebrovascular accident or transient ischemic attack (event < 3 months)
- Recent myocardial infarction (event < 3 months)
- Individuals with drug-eluting stents placed within 1 year, or bare metal stents or plain angioplasty within 90 days, unless acetylsalicylic acid and antiplatelet drugs will be continued by agreement of surgeon, cardiologist, and anesthesia
- Ongoing evidence of myocardial ischemia
- Poorly controlled asthma (FEV1 < 80% despite medical management)
- Pregnancy
- Prolonged surgery (> 3 hours)
- Resistant hypertension (poorly controlled hypertension)
- Severe valvular heart disease
- Moderate-to-severe obstructive sleep apnea
- Uncompensated chronic heart failure (NYHA class III or IV)
- Uncontrolled diabetes with recurrent diabetic ketoacidosis or severe hypoglycemia
- Age under 18 years
List taken verbatim from Coverage Rationale
Access-based medical necessity for hospital outpatient department
Covered when ANY one of the following access-based situations prevents safe or feasible care in an ambulatory surgical center (ASC):
Access-based reasons
- An ASC's specific guideline regarding the individual's health conditions or weight would preclude management of the individual in an ASC setting
- No geographically accessible ASC that has the necessary equipment for the procedure (examples include but are not limited to fluoroscopy, laser, ocular equipment, operating microscope, and nonstandard scopes required to perform specialized procedures such as duodenoscope or ureteroscope)
- No geographically accessible ASC available at which the individual's physician has privileges
Surgeon-preferred or proprietary instruments, instrument sets, and hardware sets are explicitly excluded as a justification for directing a procedure to a hospital outpatient department when an ambulatory surgical center (ASC) lacks necessary equipment. The policy states that lack of ASC equipment may justify hospital outpatient use, but this does not include surgeon-preferred or proprietary items.
Use of a hospital outpatient department when the location is not supported by the member's benefit plan medical necessity review will not be covered. Site-of-service medical necessity reviews determine whether hospital outpatient care is appropriate per the member's benefit plan; if not considered medically necessary, the hospital outpatient location will be denied coverage.
Applicable CPT/HCPCS Codes and Code List Changes
| Refer to Commercial Plans: Outpatient Surgical Procedures -Site of Service: CPT/HCPCS Code List | Commercial Plans CPT/HCPCS list referenced |
| Refer to Individual Exchange Plans: UHCProvider.com ≥ Exchange Plans Advanced Notification/Prior Authorization Requirements | Individual Exchange prior authorization/advanced notification reference |
| 26530 | Removed from Commercial Plans list |
| 26535 | Removed from Commercial Plans list |
| 29800 | Removed from Commercial Plans list |
| 29804 | Removed from Commercial Plans list |
| 29805 | Removed from Commercial Plans list |
| 29830 | Removed from Commercial Plans list |
| 29840 | Removed from Commercial Plans list |
| 29860 | Removed from Commercial Plans list |
Prior Authorization, Documentation, and Provider Responsibilities
Prior authorization/advanced notification required for applicable codes
Site-of-service medical necessity reviews are required for procedures listed on the Applicable Codes list when performed in an outpatient hospital department; providers must follow payer-specific CPT/HCPCS code lists and Exchange advanced notification/prior authorization requirements.
- Refer to Commercial Plans: Outpatient Surgical Procedures -Site of Service CPT/HCPCS Code List
- Refer to Individual Exchange Plans: UHCProvider.com ≥ Exchange Plans Advanced Notification/Prior Authorization Requirements
Confirm PA for applicable CPT codes
Confirm whether prior authorization or advanced notification is required for the specific CPT codes being billed; note that CPT codes 26530, 26535, 29800, 29804, 29805, 29830, 29840, and 29860 were removed from the Commercial Plans list and should be verified against the member's benefit plan.
- Verify remaining applicable CPT codes with the member's benefit plan before scheduling or billing.
- Do not assume removed codes are covered for Commercial Plans; confirm policy applicability.
Verify plan-specific utilization requirements
Verify whether any plan-level step therapy or utilization management requirements apply to the proposed procedure by checking the member-specific benefit plan and applicable program guidance.
Confirm use of decision-support criteria for coverage reviews
If there are payer tools or third-party criteria (e.g., InterQual) used by UnitedHealthcare for coverage decisions, confirm which clinical criteria or decision support will be applied for the member prior to performing the procedure.
Medical records required for review
Provide complete medical records when requested; documentation may be required to assess whether the member meets the clinical criteria for hospital outpatient department coverage and does not guarantee coverage.
- Submit clinical notes, relevant test results, and any documentation supporting clinical indications (e.g., MELD score, pulmonary function, recent MI/stroke).
- Follow guidelines titled Medical Records Documentation Used for Reviews when preparing records.
Check member-specific plan
Before applying this policy, check the member-specific benefit plan document and any applicable federal or state mandates; the member-specific benefit plan governs in the event of a conflict.
- Do not rely solely on this policy — verify coverage terms and prior authorization requirements in the member's benefit plan.
Coverage denial if hospital outpatient department not necessary
If the hospital outpatient department location is not considered medically necessary under the member's benefit plan, services provided in that location will not be covered; providers risk denial if site-of-service medical necessity is not supported.
- Ensure clinical indications meet the policy's listed criteria or that an access-based reason (e.g., no geographically accessible ASC or physician privileges) applies before using the hospital outpatient department.
- Coverage may be denied if the location is not supported by the member's benefit plan medical necessity review.
Reference member-specific benefit plan
Always base coverage determinations on the member-specific benefit plan document; in case of conflict between this Medical Policy and the member-specific benefit plan, the member-specific plan governs and may affect coverage.
- Reference the member-specific benefit plan when making authorization or billing decisions.
- Check for federal or state mandates that may modify coverage requirements.
Clinical and Operational Background
Some outpatient surgical procedures can be safely performed in an ambulatory surgical center (ASC), but certain clinical or procedural circumstances require the resources of a hospital outpatient department. Examples include advanced medical conditions (see policy criteria) and situations where an ASC cannot safely manage the patient. The policy also permits hospital outpatient use for access-based reasons when an ASC cannot accommodate the procedure due to guideline exclusions for the patient, lack of a geographically accessible ASC with necessary equipment (examples: fluoroscopy, laser, ocular equipment, operating microscope, or nonstandard scopes such as duodenoscope or ureteroscope), or when the operating physician does not have privileges at a nearby ASC. Note that lack of equipment does not include surgeon-preferred or proprietary instruments.
Key Definitions and Clinical Scoring Thresholds
Policy Changes and Version History
Policy MP.11.27 published and became effective; added reference link to the Medical Policy titled 'Surgery of the Wrist or Thumb' and clarified that the policy does not apply to Individual Exchange benefit plans in certain states.
Removed CPT codes from the Commercial Plans list: 26530, 26535, 29800, 29804, 29805, 29830, 29840, and 29860.
Updated References section to reflect the most current information and archived previous policy version MP.11.26.
Updated definitions for ASA Physical Status Classification System Risk Scoring Tool and Poorly Controlled Hypertension.
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