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    v1.0.28
    OpenPayerBilling CodesTemporary National Codes (Non-Medicare)HCPCS hcpcs-s0310-hospitalist-services-inpatient-management
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    HCPCS Level II S0310: Hospitalist Services, Inpatient Management

    HCPCS Level II code S0310 describes hospitalist services billed in addition to an appropriate evaluation and management service, indicating care provided by a hospital-based physician responsible for inpatient management; service type: hospitalist consultation/management; typical site of service: inpatient hospital setting.

    For related coverage guidance, see recent payer policy updates: Fixed Wing Air Ambulance Transport, Air Ambulance, Ambulance Services (for Tennessee Only).

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    Table of contents

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    Explore openpayer tools

    • Billing CodesCPT, HCPCS, DRG & more
    • Reimbursement RatesCommercial vs. Medicare rate reports
    • ProvidersHospitals & facilities
    • PayersPlans & market footprint
    • Taxonomy CodesNUCC specialty codes
    • ModifiersCPT modifiers & usage
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    Clinical & Coding Specifications

    Clinical Context

    A hospitalized adult patient is admitted through the emergency department with acute decompensation of a chronic medical condition (for example, exacerbation of congestive heart failure, chronic obstructive pulmonary disease, or sepsis). The primary team requests daily management by a hospitalist for coordination of inpatient care, medication reconciliation, diagnostic interpretation, and transition planning. Hospitalist services are provided in the inpatient hospital setting (ward or observation) and documented as separate professional services in addition to an appropriate Evaluation and Management (E/M) visit. The workflow typically includes initial admission H&P documentation by the admitting physician, daily progress notes by the hospitalist, orders and medication adjustments, communication with consultants (cardiology, pulmonology, infectious disease), family discussions regarding goals of care, and preparation for discharge with a comprehensive discharge summary and follow-up arrangements. Billing uses the hospitalist service code S0310 appended to the appropriate E/M CPT code for the face-to-face encounter when required by payer policy, and may be accompanied by applicable modifiers for circumstances such as increased complexity, teaching physician involvement, or distinct procedural components.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    99221Initial hospital inpatient care, typically 30 minutes per dayAdmission E/M code that may be billed by the admitting physician; S0310 is reported in addition when hospitalist services are provided separately.
    99231Subsequent hospital inpatient care, typically 15 minutes per dayDaily follow-up E/M code commonly billed by hospitalists; used for routine progress notes in the inpatient setting.
    99238Hospital discharge day management; 30 minutes or lessDischarge day management code used when hospitalist completes discharge tasks; S0310 can be reported in addition for hospitalist professional services if payer permits.
    99291Critical care, evaluation and management of the first 30-74 minutesUsed when hospitalist provides critical care services for a critically ill patient; billed alongside appropriate modifiers per payer rules.
    99499Unlisted evaluation and management serviceUsed when a hospitalist documents services that do not fit standard E/M codes and payer requires an unlisted E/M submission; S0310 may accompany such documentation.

    Related Modifiers

    9 rows

    ModifierDescriptionWhen to Use
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    23Modifier -23 (Unusual Anesthesia) is used on anesthesia service CPT codes when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia…- Use modifier -23 only on anesthesia CPT codes (00100–01999) when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia because of…
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    32Modifier 32 (Mandated Services) indicates that a CPT-coded service was required by a third party—such as an insurer, school, state agency, or court. The AMA defines it as denoting services mandated…- Use Modifier 32 when a service or procedure was explicitly mandated by a third party (for example an insurer requiring a second opinion, a school requiring a sports physical, a state agency or…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    207RH0000XHematology (Internal Medicine) PhysicianAn internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, cl…
    207RM1200XMagnetic Resonance Imaging (MRI) Internal Medicine PhysicianThe NUCC recommends this code not be used. Choose a more appropriate code.<br/>
    208000000XPediatrics PhysicianA pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectru…
    261QM0855XAdolescent and Children Mental Health Clinic/CenterAn entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to mental and behavioral disord…
    364S00000XClinical Nurse SpecialistA registered nurse who, through a graduate degree program in nursing, or through a formal post-basic education program or continuing education courses…
    172V00000XCommunity Health WorkerCommunity health workers (CHW) are lay members of communities who work either for pay or as volunteers in association with the local health care syste…
    207RI0011XInterventional Cardiology PhysicianAn area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and p…
    1835P0018XPharmacist Clinician (PhC)/ Clinical Pharmacy SpecialistPharmacist Clinician/Clinical Pharmacy Specialist is a pharmacist with additional training and an expanded scope of practice that may include prescrip…

    Related Payer Policy Updates

    Specialty: Emergency & Medical Transportation1 / 3

    9 rows

    PolicyPayerEffective Date
    Fixed Wing Air Ambulance TransportCigna2026-08-15
    Air AmbulanceAmbetter Georgia2026-08-01
    Ambulance Services (for Tennessee Only)UnitedHealthcare2026-08-01
    Ambulance Services (for New Mexico Only)UnitedHealthcare2026-08-01
    Clinical Policy: Air AmbulanceArizona Complete Health2026-08-01
    Clinical Policy: Air AmbulanceCentene2026-08-01
    Air AmbulanceCentene2026-08-01
    Clinical Policy: Air AmbulanceAmbetter Nevada2026-08-01
    Ambulance TransportProvidence Health Plan2026-07-01

    Related Codes

    HCPCS-LEVEL-II-S2152-SOLID-ORGAN-TRANSPLANTATION-GLOBAL-CARE

    HCPCS Level II S2152: Solid Organ Procurement and Transplantation

    HCPCS-LEVEL-II-S2266-INDUCED-ABORTION-29-TO-31-WEEKS

    HCPCS Level II S2266: Induced Abortion, 29 to 31 Weeks

    HCPCS-LEVEL-II-S3630-EOSINOPHIL-COUNT-BLOOD-DIRECT

    HCPCS Level II S3630: Eosinophil Count, Blood, Direct

    HCPCS-LEVEL-II-S4017-INCOMPLETE-ART-CYCLE-CANCELLED-PRIOR-TO-STIMULATION

    HCPCS Level II S4017: Incomplete Cycle — Cancelled Prior to Stimulation

    HCPCS-LEVEL-II-S8055-ULTRASOUND-GUIDANCE-MULTIFETAL-REDUCTION-TC

    HCPCS Level II S8055: Ultrasound Guidance for Multifetal Pregnancy Reduction

    HCPCS-LEVEL-II-S8940-EQUESTRIAN-HIPPOTHERAPY-PER-SESSION

    HCPCS Level II S8940: Equestrian/Hippotherapy, Per Session

    HCPCS-LEVEL-II-S9024-PARANASAL-SINUS-ULTRASOUND

    HCPCS Level II S9024: Paranasal Sinus Ultrasound

    HCPCS-LEVEL-II-S9366-HOME-TPN-1-2L-PER-DAY-HOME-INFUSION

    HCPCS Level II S9366: Home Infusion TPN, 1–2 L/day

    HCPCS-LEVEL-II-S9446-GROUP-PATIENT-EDUCATION-NON-PHYSICIAN

    HCPCS S9446: Patient Education, Non-Physician Provider, Group, Per Session

    HCPCS-LEVEL-II-S9451-EXERCISE-CLASS-NON-PHYSICIAN-SESSION

    HCPCS S9451: Exercise Classes, Non-Physician Provider, Per Session

    Showing 1–10 of 532

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    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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