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ModifiedCurativePolicy CHP-IP-2026-148

Acute Inpatient Splenectomy

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This policy governs medical necessity and acute inpatient level-of-care coverage for open or laparoscopic total or partial splenectomy for trauma, hematologic disease, abscess or infarction, and splenic neoplasm. It applies to all ages, with pediatric trauma and elective pediatric considerations noted in the policy.

Policy Summary

PayerCurative

PolicyAcute Inpatient Splenectomy

Policy CodePolicy CHP-IP-2026-148

Change TypeModified

Effective DateN/A

Next Review DateN/A

Key ActionDocument at least one qualifying splenectomy indication and why inpatient care is required.

SourceLink

POLICY UPDATE CHANGES

Version 5.4.2 supersedes version 5.4.1 and is identified as unchanged between versions.

ICD-10-CM and ICD-10-PCS codes were verified against the FY2027 CMS code files, and invalid, header-only, or mislabeled codes were corrected.

1-3 daysElective laparoscopic length of stay

3-5 daysOpen-procedure length of stay

NEWS2 ≥7ICU escalation threshold

14 daysEmergency vaccination timing

3 monthsMinimum ITP treatment duration

Medical Necessity and Level-of-Care Criteria

Acute inpatient admission

Acute inpatient splenectomy is medically necessary when ALL of the following are met.

Inpatient splenectomy

Procedure indications
- Trauma: Splenic injury with systolic blood pressure below 90 mmHg, ongoing transfusion or vasopressor requirement, peritonitis, or failed nonoperative management or angioembolization.SBP <90 mmHg or ongoing transfusion/vasopressors
- Immune thrombocytopenia: ITP lasting at least 3 months, corticosteroid-dependent or unresponsive, with failure, intolerance, or contraindication to at least one second-line agent.At least 3 months; preferably at least 12 months after diagnosis

Policy Summary

PayerCurative

PolicyAcute Inpatient Splenectomy

Policy CodePolicy CHP-IP-2026-148

Change TypeModified

Effective DateN/A

Next Review DateN/A

Key ActionDocument at least one qualifying splenectomy indication and why inpatient care is required.

SourceLink

On This Page

Inpatient setting required

Postoperative monitoring: Any splenectomy requires inpatient postoperative monitoring for bleeding, pancreatic tail injury, and platelet response.
Procedure or anatomy complexity: Massive splenomegaly or an open approach.Spleen longer than 20 cm
Higher-risk patient: ASA physical status III or higher, or documented frailty, with anticipated postoperative physiologic monitoring beyond observation capability.ASA III or higher
Significant comorbidity: Heart failure with LVEF 40% or less or NYHA III-IV symptoms; insulin-treated diabetes requiring IV insulin or frequent titration; obstructive sleep apnea with parenteral opioid requirement and continuous oximetry; CKD stage 4-5 or dialysis; or therapeutic anticoagulation requiring bridging.LVEF ≤40%; NYHA III-IV; CKD stage 4-5
Intraoperative event: Blood loss requiring transfusion, conversion to open approach, unplanned additional organ resection, or difficult airway changes the expected course.

Observation or outpatient instead of inpatient

Observation or outpatient care rather than inpatient splenectomy is appropriate when ANY of the following applies.

Lower level of care: The patient has a hemodynamically stable splenic injury managed nonoperatively with serial examinations and hemoglobin monitoring, or is receiving pre-splenectomy vaccination and hematologic optimization as outpatient services.

Nonoperative injury management and angioembolization admissions are addressed under trauma policies.

Intensive care unit

ICU care is appropriate when ANY of the following is documented.

ICU level of care: Traumatic splenic injury with shock or polytrauma requiring damage-control surgery; vasopressor or inotrope infusion to maintain MAP ≥65 mmHg or septic shock; invasive mechanical ventilation or escalating noninvasive support for acute respiratory failure; active hemorrhage with instability or massive transfusion protocol activation pending further intervention; or persistent NEWS2 ≥7 after initial treatment with documented need for organ support or continuous one-to-one monitoring.MAP ≥65 mmHg with vasopressors; septic lactate >2 mmol/L; SpO2 <90% despite FiO2 ≥0.6; pH <7.25 with rising PaCO2; NEWS2 ≥7

Step-down or intermediate care

Step-down or intermediate care is appropriate when ANY of the following is documented and no ICU criterion is present.

Intermediate level of care: Platelet count below 20,000 per microliter after splenectomy for ITP with ongoing bleeding risk; NEWS2 5-6 or a single-parameter score of 3 requiring vital signs at least every 1-2 hours without organ support; new hemodynamically significant arrhythmia requiring continuous monitoring and rate-control titration; or a stable patient requiring noninvasive ventilation or high-flow oxygen, or with obstructive sleep apnea and parenteral opioids requiring continuous pulse oximetry and capnography.Platelets <20,000/µL; NEWS2 5-6 or single-parameter score 3

Discharge readiness

Discharge from acute care is appropriate when ALL of the following are met.

Clinical stability: Temperature is below 38.0 C for at least 24 hours or a fever source has an oral/outpatient plan; vital signs are stable with NEWS2 0-4 on room air or baseline home oxygen for 12-24 hours; pain is controlled on oral analgesics with an opioid-sparing regimen; and oral intake is tolerated or a nutrition plan is arranged.Temperature <38.0 C; NEWS2 0-4 for 12-24 hours
Laboratory and functional stability: Hemoglobin is stable without transfusion for at least 24 hours, creatinine and electrolytes are at or near baseline or have a follow-up plan, and mobility is at the expected post-procedure level or safe transfer to post-acute care is arranged.No transfusion for at least 24 hours
Safe transition: Medication reconciliation, venous thromboembolism prophylaxis plan, wound and drain instructions, return precautions, and follow-up appointment are documented.
Asplenia prevention and platelet plan: Pneumococcal, MenACWY, MenB, and Hib vaccination is completed or scheduled; a fever action plan and antibiotic guidance are provided; and platelet count is stable or rising with a thromboprophylaxis decision documented for reactive thrombocytosis or portal vein thrombosis risk.Vaccination at least 14 days after emergency splenectomy if not given earlier

Continued-stay criteria

Continued acute inpatient stay is medically necessary when ANY of the following is documented at each review.

Continued stay: Any ICU or step-down criterion is present or NEWS2 is ≥5; IV therapy cannot be provided at a lower level; oral intake is not tolerated or ileus requires nasogastric decompression; an urgent procedure, imaging study, or consultation expected within 24 hours may change acute management; post-splenectomy hemorrhage, subphrenic abscess, or pancreatic tail leak requires drainage, IV antibiotics, or reoperation; portal or splenic vein thrombosis requires anticoagulation initiation and monitoring; or associated traumatic injuries require continued acute care.NEWS2 ≥5

Does not meet criteria

The following scenarios do not meet medical-necessity criteria and are referred for physician review.

Does not meet criteria: Stable blunt splenic injury without failed nonoperative management or another operative indication; ITP within 12 months without failure of corticosteroids and at least one second-line agent; staging splenectomy for lymphoma; preoperative admission more than one day before surgery for scheduling, travel, or convenience; continued stay after discharge readiness without an acute need; or custodial, respite, or convenience days.

The request is not denied by an automated system or non-physician reviewer. An adverse determination requires physician review and an opportunity for peer-to-peer discussion.

Immune thrombocytopenia

For ITP, splenectomy is considered after the specified treatment history, with treatment sequencing and delay considerations.

ITP treatment sequencing: The patient has corticosteroid-dependent or corticosteroid-unresponsive immune thrombocytopenia after at least 3 months of treatment, and splenectomy is being considered among subsequent treatment options.At least 3 months; preferably at least 12 months after diagnosis

The required second-line treatment history includes failure, intolerance, or contraindication to at least one thrombopoietin receptor agonist or rituximab. Rituximab is preferred to splenectomy when appropriate, and splenectomy should be delayed for at least 1 year when possible.

Coding and Clinical Thresholds

ICD-10-CM: splenic disordersICD-10

D73.1	Chronic congestive splenomegaly
D73.3	Abscess of spleen
D73.5	Infarction of spleen
D73.89	Other diseases of spleen

ICD-10-CM: hematologic indicationsICD-10

D69.3	Immune thrombocytopenic purpura
D58.0	Hereditary spherocytosis
D58.1	Other hereditary hemolytic anemias

ICD-10-CM: splenic neoplasmICD-10

C96.4

Blastic plasmacytoid dendritic cell neoplasm

ICD-10-CM: splenic injuryICD-10

S36.020A	Major laceration of spleen, initial encounter
S36.021A	Minor laceration of spleen, initial encounter
S36.030A	Major contusion of spleen, initial encounter
S36.031A	Minor contusion of spleen, initial encounter
S36.032A	Other injury of spleen, initial encounter
S36.09XA	Other injury of spleen, initial encounter

ICD-10-PCS: spleen resectionICD-10

07TP0ZZ	Resection of spleen, open approach
07TP4ZZ	Resection of spleen, percutaneous endoscopic approach

CPT: splenectomyCPT

38100	Splenectomy; total (separate procedure)
38101	Splenectomy; partial
38102	Splenectomy; total or partial, laparoscopic
38120	Laparoscopic surgical splenectomy

MS-DRG (FY2027 v44)Revenue

799	Splenic procedures with MCC
800	Splenic procedures with CC
801	Splenic procedures without CC/MCC
957	Other O.R. procedures for multiple significant trauma with MCC
958	Other O.R. procedures for multiple significant trauma with CC
959	Other O.R. procedures for multiple significant trauma without CC/MCC

Revenue codes (facility)Revenue

0120	Room and board - semi-private two bed
0121	Room and board - semi-private one bed
0200	Intensive care unit
0206	Intermediate ICU
0360	Operating room services
0370	Anesthesia
0710	Clinic
0762	Treatment or observation room

Splenic injury hemodynamic instability

Systolic blood pressureBelow 90 mmHg

TransfusionOngoing transfusion requirement

VasopressorsOngoing vasopressor requirement

Massive splenomegaly

Spleen lengthLonger than 20 cm

Clinical findingMassive splenomegaly

Inpatient relevanceSupports an inpatient setting requirement for splenectomy

ITP duration

Minimum durationAt least 3 months

Preferred timingPreferably at least 12 months after diagnosis before splenectomy

Treatment contextCorticosteroid-dependent or corticosteroid-unresponsive ITP with required second-line treatment history

Septic shock

Vasopressor criterionVasopressor requirement

Lactate criterionLactate above 2 mmol/L

Fluid statusCriteria apply despite adequate fluid resuscitation

Acute respiratory failure escalation

OxygenationSpO2 below 90% despite FiO2 of 0.6 or higher

Acid-basepH below 7.25

Ventilatory trendRising PaCO2 with the acid-base criterion

Post-splenectomy thrombocytopenia

Platelet countBelow 20,000 per microliter

Bleeding riskOngoing bleeding risk requiring frequent monitoring

Care levelStep-down or intermediate care is appropriate when no ICU criterion is present

Discharge fever criterion

TemperatureBelow 38.0 C

DurationFor at least 24 hours

AlternativeAn identified fever source with an oral or outpatient treatment plan

Concurrent review interval

ICU or step-downConcurrent review at least daily

Medical-surgical unitConcurrent review at least every 48 hours

Additional review triggerReview is also triggered by any red flag or when the expected-length-of-stay benchmark is reached

Authorization and Documentation Requirements

Documentation Required

Inpatient Splenectomy Medical Necessity

Submit documentation showing at least one qualifying indication for splenectomy and why acute inpatient postoperative care is required. Qualifying indications include unstable or complicated splenic injury, appropriately treated ITP, hereditary hemolytic anemia with qualifying symptoms or transfusion dependence, uncontrolled hypersplenism, or a complicated abscess, infarction, cyst, or mass.

Document the specific procedure indication and supporting clinical findings.
Document the inpatient need, including postoperative monitoring needs, massive splenomegaly or open approach, or ASA III-or-higher status/frailty requiring monitoring beyond observation.

Step Therapy

ITP Second-Line Treatment Required

For ITP, document disease duration, corticosteroid dependence or lack of response, and failure, intolerance, or contraindication to at least one second-line agent before requesting splenectomy.

Document ITP duration of at least 3 months and, preferably, at least 12 months from diagnosis.
Identify the second-line treatment used or considered, such as a thrombopoietin receptor agonist or rituximab, and provide the response, failure, intolerance, or contraindication.

Documentation Required

Procedure Plan and Indication

Submit the operative or procedure plan with the specific indication, staging or classification, and planned approach.

Identify whether the approach is open, laparoscopic, or robotic.

Documentation Required

Risk Assessment

Document the patient's ASA physical status, relevant comorbidities, and anesthesia risk assessment.

Explain any anticipated need for postoperative physiologic monitoring beyond observation.

Documentation Required

Operative Details

Provide the operative note with the clinical details needed to evaluate the procedure and postoperative risk.

Estimated blood loss and transfusions
Intraoperative events
Drains or devices placed

Documentation Required

Concurrent-Stay Documentation

For each continued-stay period, document current clinical data and the specific reason acute inpatient care remains necessary.

Include vital signs or NEWS2, intake and output, drain output, and laboratory trends.
Concurrent review applies to each continued-stay period; days already authorized are not retroactively denied.

Documentation Required

Level-of-Care Support

When ICU or step-down care is used, document the assigned level of care and the objective clinical finding supporting that placement.

Tie the requested level of care to the patient's documented physiologic monitoring or treatment needs.

Documentation Required

Discharge Planning

Document discharge readiness and the transition plan when acute inpatient care is no longer required.

Include post-acute referral when applicable.
Address the plan for transition rather than using continued acute care for placement, transportation, or equipment delays.

Documentation Required

Trauma Documentation

For trauma cases, provide the objective injury and treatment history supporting operative management or continued acute care.

Hemodynamic status, including instability, ongoing transfusion, or vasopressor need
CT grade of splenic injury
Course of nonoperative management and any angioembolization, including failure when applicable

Documentation Required

ITP Treatment History

For ITP requests, provide a complete treatment history and current disease status.

Duration of ITP
Treatments tried, with dates and responses
Current platelet count

Documentation Required

Vaccination Documentation

Provide vaccination documentation relevant to splenectomy and show the timing of each vaccination relative to surgery.

Include the vaccination record and administration dates.

Billing Rule

Documentation Must Support Requested Scope

The documentation must support the full requested scope. If the record supports only part of the requested quantity, units, or duration, the supported portion may be approved and only the unsupported increment reviewed.

Ensure the requested quantity, units, and duration are consistent with the clinical documentation.

Unsupported block type: denial_risk

Prior Authorization

Adverse Determination and Peer-to-Peer Review

Automated systems and non-physician clinical reviewers may approve a request in full or in part but may not issue an adverse determination. An adverse determination requires physician review after offering the requesting provider a peer-to-peer discussion with a physician of the same or similar specialty.

The reviewing physician must meet applicable licensure, specialty, and medical-director requirements for the plan's situs state.
The absence of a criterion addressing a service is not by itself a basis for an adverse determination; the physician applies generally accepted standards of medical practice.

Key Definitions

Clinical severity findings

Examination findingsObjective, documented examination findings that establish acuity

Physiologic findingsVital-sign or laboratory findings that establish acuity

Diagnostic findingsImaging or validated-score findings that establish acuity

Hospital-level services required

DefinitionServices that cannot be delivered safely in observation, ambulatory, home, or post-acute settings

Intravenous therapyFrequent titration of intravenous therapy

Monitoring and proceduresContinuous monitoring or procedures with significant early complication risk

Expected length of stay

DefinitionA planning benchmark for an uncomplicated course based on the CMS FY2027 MS-DRG geometric mean length of stay

Laparoscopic elective course1-3 days

Open-procedure course3-5 days

Coverage effectThe benchmark is not a limit on covered days

NEWS2

Full nameNational Early Warning Score 2

Physiologic componentsRespiratory rate, oxygen saturation, supplemental oxygen, systolic blood pressure, heart rate, level of consciousness, and temperature

Urgent reviewA score of 5-6 or a single parameter score of 3 prompts urgent review

Emergency responseA score of 7 or more prompts emergency response

ASA physical status

Full nameAmerican Society of Anesthesiologists preoperative comorbidity classification

Class IIISevere systemic disease

Class IVSevere systemic disease that is a constant threat to life

Acute Inpatient Splenectomy

Sign up for curative Policy CHP-IP-2026-148 alerts

Medical Necessity and Level-of-Care Criteria

Coding and Clinical Thresholds

Authorization and Documentation Requirements

Clinical Context

Key Definitions