CurrentUnitedHealthcarePolicy MP.19.10

Elective Inpatient Services

Defines medical necessity criteria for planned elective inpatient admission for surgeries/procedures under UnitedHealthcare Commercial and Individual Exchange benefit plans, using InterQual as a supporting source. Excludes obstetric care during pregnancy, childbirth, and the post-partum period.

Policy Summary

PayerUnitedHealthcare

PolicyElective Inpatient Services

Policy CodePolicy MP.19.10

Change TypeDefinitions and Supporting Information updated

Effective DateJanuary 1, 2026

Next Review Date

Key ActionDocument presence of any listed medical conditions, procedure-related factors, complex surgical/post-op needs, or procedural events that justify inpatient admission; include objective measures (MELD, GFR, AHI, AKI criteria, ASA class, hemodynamic parameters).

POLICY UPDATE CHANGES

Updated definition of 'American Society of Anesthesiologists Physical Status Classification System Risk Scoring Tool'.

Definitions section updated (Definitions).

1Policy applies to plan types

MultipleRisk/condition criteria listed

ExcludedObstetric care

Coverage Summary

Policy MP.19.10: Elective inpatient services for certain surgeries or procedures — covered_with_criteria. Defines medical necessity criteria for planned elective inpatient admissions under UnitedHealthcare Commercial and Individual Exchange benefit plans using InterQual as a supporting source.

UnitedHealthcare applies InterQual criteria to support medical necessity and level-of-care decisions and this policy is intended to assist interpretation of standard benefit plans; member-specific plan documents govern coverage and the policy may be applied to Medicare Advantage in the absence of NCD/LCD guidance. The policy explicitly excludes obstetric care during pregnancy, childbirth, and the post-partum period (do not apply this policy to obstetric members).

Thresholds

MELD Score> 8

GFR<= 30 mL/min

Apnea-Hypopnea Index (AHI) - moderate15-30 events/hour

Apnea-Hypopnea Index (AHI) - severe> 30 events/hour

AKI - creatinine criteriaIncrease in serum creatinine ≥ 0.3 mg/dL in 48 hours or ≥ 1.5x baseline within prior 7 days

AKI - urine outputUrine volume < 0.5 mL/kg/hour for 6 hours

Hemodynamic instability - systolic BPSystolic BP < 90 mm hg or decrease > 40 mm hg

Hemodynamic instability - MAPMAP < 65 mm hg

Medically Necessary Criteria for Elective Inpatient Admission

Medically necessary elective inpatient admission

A planned elective inpatient admission for certain surgeries or procedures is considered medically necessary when any of the following criteria are met:

ANY of the following

Medical conditions increasing the risk of major post-operative complications
- Advanced liver disease (MELD Score > 8)> 8
- Cognitive status that warrants inpatient stay
- Severe renal disease (GFR <= 30 mL/min)<= 30 mL/min
- Severe valvular heart disease
- Stroke or TIA within last 3 monthswithin 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)
Procedure related factors that may increase the risk of complications
- Anesthetic risk: American Society of Anesthesiologists class III or greaterASA III or greater
- Age 85 years or older>= 85 years
- High risk for thromboembolism
- Sleep apnea: Moderate (AHI 15-30) to severe (AHI > 30) sleep apneaAHI 15-30; > 30
Complex surgical approach or post-operative needs
- Complex surgical approach (e.g., unusually extensive dissection needed)
- Complex post-operative wound care (e.g., complex drain management, open wound, previous local tissue injury resulting from factors such as radiation, previous surgery, impaired circulation, sustained pressure)
- Difficult approach because of previous operation
- Extensive or prolonged (longer than the usual time frame) surgery
- Advance surgical planning determines an individual requires inpatient recovery and care following a surgical procedure
  - Individual's residence is distant to medical facility and there is a potential for urgent complications and no other nearby temporary residence is available and not appropriate for ambulatory or observation level of care
Procedural related events that may require an inpatient stay
- Acute Kidney Injury (KDIGO criteria): Acute Kidney Injurycreatinine increase ≥ 0.3 mg/dL in 48 hours or ≥ 1.5x baseline within 7 days; or urine output < 0.5 mL/kg/hour for 6 hours
  KDIGO, 2012
- Altered mental status that is severe or persistent
- Ambulatory or appropriate activity level status is not achieved
- Conversion to open or complex procedure that requires inpatient care
- Excessive drainage or bleeding from the operative site

Provider Actions & Authorization

Documentation Required

Document clinical risk factors and criteria

Document presence of any listed medical conditions, procedure‑related factors, complex surgical/post‑operative needs, or procedural events that justify inpatient admission. Include objective measures in the medical record to support the need for inpatient care.

MELD Score (threshold: > 8)
GFR (threshold: ≤ 30 mL/min)
Apnea‑Hypopnea Index (AHI) (moderate 15–30, severe > 30 events/hour)
Acute Kidney Injury criteria (≥ 0.3 mg/dL creatinine increase in 48 hours or ≥ 1.5× baseline in 7 days; urine output < 0.5 mL/kg/hr for 6 hours; >50% reduction in eGFR)
ASA Physical Status Classification (III or greater)
Hemodynamic parameters (e.g., systolic BP < 90 mm Hg or >40 mm Hg drop; MAP < 65 mm Hg; oliguria/urine output goals)

Prior Authorization

Apply InterQual and benefit plan checks

Use InterQual criteria as a supporting source for medical necessity and level of care decisions and verify the member‑specific benefit plan for coverage differences. Preauthorization requirements vary by plan and may be required.

Use InterQual as support and verify member benefit plan; preauthorization may be required per plan.

Denial Risk

Exclusion for obstetric care

This policy does not apply to obstetric members during pregnancy, childbirth, or the post‑partum period. Applying this elective inpatient policy to obstetric care may lead to inappropriate denials.

Do not apply to obstetric care during pregnancy, childbirth, post‑partum.

Policy Identifiers

Policy identifiersmixed

MP.19.10

UnitedHealthcare policy number for Elective Inpatient Services

Definitions & Evidence

Background: UnitedHealthcare uses InterQual as a source of medical evidence to assist medical necessity and level-of-care decisions; InterQual criteria are to be used in conjunction with independent clinical judgment and do not constitute medical advice.

Scope: The policy addresses planned elective inpatient admissions for certain surgeries or procedures and lists specific clinical, procedure-related, and procedural-event criteria that may justify inpatient admission (for example, advanced liver disease, severe renal disease, ASA class III or greater, AHI thresholds, complex surgical approach, acute kidney injury).

Definitions

Definitions (term : definition)

Acute Kidney Injury: Defined as increase in serum creatinine ≥ 0.3 mg/dL in 48 hours; or ≥ 1.5x baseline within 7 days; or reduction >50% in eGFR from baseline; or urine volume < 0.5 mL/kg/hour for 6 hours (KDIGO, 2012).creatinine ≥ 0.3 mg/dL in 48 hours; ≥ 1.5x baseline within 7 days; urine < 0.5 mL/kg/hr for 6 hours

Apnea Hypopnea Index (AHI): Number of apneas plus hypopneas per hour of sleep (events per hour) (AASM, 2008).AHI definitions: moderate 15-30; severe > 30 events/hour

Hemodynamic Instability: Vital sign abnormality not readily corrected by treatment as indicated by one or more of: systolic BP <90 mm hg or decrease >40 mm hg, oliguria (0.5 mL/kg/hour goal), MAP <65 mm hg, new abnormal capillary refill >3 sec, altered consciousness, shortness of breath, persistent tachycardia.systolic BP <90 or decrease >40; MAP <65; urine output 0.5 mL/kg/hr

ASA Physical Status Classification: Subjective assessment of overall health with classes I-VI describing increasing severity of systemic disease (ASA, 2020).ASA I-VI

Evidence

Sources referencedInterQual; AASM 2008; KDIGO 2012; ASA 2020; GINA 2023; AHA/ACC perioperative guideline 2024

Revision History

2026-01-01revisedLatest

Updated definition of 'American Society of Anesthesiologists Physical Status Classification System Risk Scoring Tool'. Note: Archived previous policy version MP.19.09. Supporting Information and clinical evidence/references sections updated.

2026-01-01clarified

Definitions section updated (Definitions).

Policy Summary

PayerUnitedHealthcare

PolicyElective Inpatient Services

Policy CodePolicy MP.19.10

Change TypeDefinitions and Supporting Information updated

Effective DateJanuary 1, 2026

Next Review Date

On This Page

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

Pre- or post-operative inpatient monitoring or treatment related to need to discontinue drugs or other therapies

Hemodynamic Instabilitysystolic BP < 90 mm hg or decrease > 40 mm hg; MAP < 65 mm hg; oliguria goal 0.5 mL/kg/hour

Longer postoperative monitoring or treatment is needed due to preoperative use of drugs (e.g., cocaine, amphetamines)

Pain, fever, or vomiting not appropriate for ambulatory or observation level of care

Severe complications of procedure (e.g., bowel injury, airway compromise, vascular injury)

Unstable clinical status