CurrentUnitedHealthcarePolicy CS182ID.B

Elective Inpatient Services (for Idaho Only)

Criteria for when a planned elective inpatient admission for certain surgeries or procedures is considered medically necessary for UnitedHealthcare members in Idaho, including Idaho Medicaid Plus.

Policy Summary

PayerUnitedHealthcare

PolicyElective Inpatient Services (for Idaho Only)

Policy CodePolicy CS182ID.B

Change TypeRevised definitions and updated clinical evidence/references

Effective DateJun 1, 2026

Next Review Date

Key ActionDocument one or more listed indications in the medical record to support inpatient admission.

SourceLink

POLICY UPDATE CHANGES

Updated definition of 'American Society of Anesthesiologists Physical Status Classification System Risk Scoring Tool' and updated Clinical Evidence and References sections.

Idaho-onlystate application

InterQual referencedevidence source

Multipleclinical triggers

Excludedobstetric exclusion

Elective Inpatient Admission — Medical Necessity Criteria

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Medical necessity criteria

A planned elective inpatient admission is considered medically necessary when ANY of the following broad categories are met (i.e., at least one category):

Top-level categories: Medical conditions increasing risk of major post-operative complications; Procedure-related factors that may increase risk of complications (including anesthetic risk and complexity of surgery); Need for pre-operative diagnostic studies not performable outpatient; Advance surgical planning requiring inpatient recovery; Procedural events requiring inpatient stay.

Presence of any one category may justify inpatient admission per policy.

Medical conditions increasing risk: At least one of: Advanced liver disease (MELD Score > 8); Cognitive status that warrants inpatient stay; Severe renal disease (GFR <= 30 mL/min); Severe valvular heart disease; Stroke or TIA within last 3 months; Symptomatic chronic lung disease (e.g., asthma, COPD); Symptomatic coronary artery disease or heart failure; Unstable medical condition (e.g., poorly controlled diabetes).

Listed medical-condition triggers.

Procedure-related factors: At least one of the following anesthetic or procedure-related factors: Anesthetic risk (American Society of Anesthesiologists class III or greater); Age 85 years or older; High risk for thromboembolism; Moderate (AHI 15-30) to severe (AHI > 30) sleep apnea; Persistent electrolyte abnormalities unresponsive to treatment (e.g., hyperkalemia, hyponatremia); Risk of post-operative airway compromise (e.g., open neck procedure, airway surgery); Complexity of surgical procedure (complex surgical approach, complex post-operative wound care, difficult approach due to previous operation, extensive or prolonged surgery).

Any one factor supports inpatient admission.

Pre-/post-operative diagnostic or monitoring needs: Need for pre-operative diagnostic studies that cannot be performed as an outpatient OR pre- or post-operative inpatient monitoring or treatment related to need to discontinue drugs or other therapies.

Per policy instructions for use.

Advance surgical planning / social determinants: Advance surgical planning indicates inpatient recovery is required when the individual's residence is distant to the medical facility with potential for urgent complications and no appropriate nearby temporary residence, making ambulatory or observation care inappropriate.

Social/distance factors may justify inpatient care.

Procedural events requiring inpatient stay: Any of the following post-procedural findings: Acute Kidney Injury; Altered mental status that is severe or persistent; Ambulatory or appropriate activity level not achieved; Conversion to open or complex procedure requiring inpatient care; Excessive drainage or bleeding from the operative site; Hemodynamic instability; Longer post-operative monitoring due to preoperative use of drugs (e.g., cocaine, amphetamines); Pain, fever, or vomiting not appropriate for ambulatory or observation care; Severe complications of procedure (e.g., bowel injury, airway compromise, vascular injury); Unstable clinical status.

Event-based indications for inpatient admission.

This policy does not apply to an obstetric member during pregnancy, childbirth, or the post-partum period.

Elective inpatient admission is not supported when none of the listed criteria are present — that is, when there are no medical-condition risk factors, no procedure- or anesthesia-related risk factors, no need for pre- or post-operative inpatient diagnostic studies or monitoring, no advance surgical planning or social/distance factors requiring inpatient recovery, and no procedural events (e.g., acute kidney injury, hemodynamic instability, conversion to open procedure, excessive bleeding) that would necessitate an inpatient stay.

Prior Authorization, Documentation, and Denial Risk

Prior Authorization

InterQual-based prior authorization

InterQual-based prior authorization — InterQual is referenced as the source to support medical necessity and level-of-care decisions. Providers should expect prior authorization and criteria checks and use InterQual criteria in conjunction with their clinical judgment.

Click here to view the InterQual® criteria.

Documentation Required

Documentation of indication

Provider must document the presence of one or more listed indications that justify a planned inpatient admission for a surgical or procedural admission. Acceptable documentation includes medical records showing: advanced liver disease (MELD > 8); cognitive status requiring inpatient care; severe renal disease (GFR ≤ 30 mL/min); severe valvular heart disease; recent stroke/TIA (within 3 months); symptomatic chronic lung disease; symptomatic coronary artery disease or heart failure; unstable medical conditions (e.g., poorly controlled diabetes); anesthetic risk (ASA class III+), age ≥85, high thromboembolism risk, moderate to severe sleep apnea, persistent electrolyte abnormalities, risk of postoperative airway compromise; complexity or expected prolonged duration of the procedure; need for pre-operative diagnostic studies that cannot be done as outpatient; or advance planning showing the patient’s residence or social situation precludes safe outpatient recovery.

Denial Risk

Denial risk when criteria not met

Denial risk when criteria not met — Admissions that do not meet the listed medical-condition or procedure-related criteria, or that lack sufficient documented evidence supporting one or more of those indications, are at risk of denial. Ensure records clearly show the specific clinical findings or procedural factors supporting inpatient level of care (e.g., labs, imaging, anesthesia assessment, operative complexity, distance from facility, or post‑op monitoring needs).

Step Therapy

Step therapy

Step therapy — Not applicable. This policy specifies no step-therapy requirements.

Policy Background and Purpose

Rationale: When considering a planned elective inpatient admission after surgery, the policy identifies specific clinical and procedure-related risk factors that increase the likelihood of major postoperative complications and therefore justify inpatient recovery. Medical-condition triggers include advanced liver disease (MELD > 8), cognitive impairment requiring supervision, severe renal disease (GFR ≤ 30 mL/min), severe valvular heart disease, recent stroke or TIA, symptomatic chronic lung disease, symptomatic coronary disease or heart failure, and other unstable medical conditions. Procedure- and anesthesia-related factors that support inpatient recovery include an elevated anesthetic risk such as ASA class III or greater, age ≥85 years, high thromboembolic risk, moderate to severe OSA (AHI ≥15/hour), persistent electrolyte abnormalities unresponsive to treatment, risk of postoperative airway compromise, and procedural complexity or prolonged operative time. Additionally, the need for inpatient pre- or post-operative diagnostic studies or monitoring, advance surgical planning due to distant residence without appropriate temporary housing, or intra- or post-procedural events (for example, Acute Kidney Injury, hemodynamic instability, conversion to a more complex procedure, excessive bleeding, or failure to achieve ambulatory status) are listed as justifications for inpatient admission.

Clinical Definitions and Scoring Tools

Acute Kidney Injury — definition and criteria

AKI — absolute creatinine riseIncrease in the serum creatinine value of ≥0.3 mg/dL (26.52 micromol/L) in 48 hours

AKI — relative creatinine riseIncrease in serum creatinine of ≥1.5 times baseline within the prior 7 days

AKI — eGFR reductionReduction of more than 50% in estimated glomerular filtration rate from baseline

AKI — oliguriaUrine volume <0.5 mL/kg/hour for 6 hours

Apnea–Hypopnea Index (AHI) and OSA severity

AHI — definitionNumber of apneas plus hypopneas during total sleep period × 60 ÷ total sleep time (minutes); reported as events per hour

Mild OSA rangeAHI ≥5 and <15 events/hour

Moderate OSA rangeAHI ≥15 and ≤30 events/hour

Severe OSA rangeAHI >30 events/hour

ASA Physical Status Classification (I–VI)

ASA IA normal healthy patient

ASA IIA patient with mild systemic disease

ASA IIIA patient with severe systemic disease

ASA IV–VIASA IV: severe systemic disease that is a constant threat to life; ASA V: moribund patient not expected to survive without operation; ASA VI: declared brain-dead donor

Hemodynamic instability — definition and vital‑sign thresholds

Systolic blood pressureSystolic BP <90 mm Hg or decrease in systolic BP >40 mm Hg

Mean arterial pressureMAP <65 mm Hg

OliguriaUrine-output treatment goal of 0.5 mL/kg/hour (oliguria indicates concern)

Perfusion and clinical signsNew abnormal capillary refill >3 seconds, altered level of consciousness, shortness of breath, or persistent tachycardia

OpenPayer

Elective Inpatient Services (for Idaho Only)

Elective Inpatient Admission — Medical Necessity Criteria

Clinical Thresholds and Coding-Adjacent Metrics

Prior Authorization, Documentation, and Denial Risk

Policy Background and Purpose

Clinical Definitions and Scoring Tools