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Elective Inpatient Services (for Idaho Only)
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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.
Updated definition of 'American Society of Anesthesiologists Physical Status Classification System Risk Scoring Tool' and updated Clinical Evidence and References sections.
Elective Inpatient Admission — Medical Necessity Criteria
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):
Presence of any one category may justify inpatient admission per policy.
Listed medical-condition triggers.
Any one factor supports inpatient admission.
Per policy instructions for use.
Social/distance factors may justify inpatient care.
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.
Clinical Thresholds and Coding-Adjacent Metrics
Prior Authorization, Documentation, and Denial Risk
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 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 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 — 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
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