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    v1.0.30
    OpenPayerBilling CodesProcedures / Professional ServicesHCPCS hcpcs-g0304-pre-operative-pulmonary-prep-lvrs
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    HCPCS G0304: Pre-operative Pulmonary Services for LVRS, 1–9 Days

    HCPCS Level II code G0304 describes pre-operative pulmonary surgery services provided to prepare a patient for lung volume reduction surgery (LVRS), covering 1 to 9 days of services; the service type is pre-operative pulmonary evaluation and preparation, typically delivered in a pre-surgical outpatient clinic or hospital-based preoperative service unit to assess and stabilize pulmonary status prior to LVRS.

    For related coverage guidance, see recent payer policy updates: Percutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disorders, Esophagogastroduodenoscopy (EGD) Coverage Policy, Radiofrequency Therapy for Fecal Incontinence.

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    Clinical & Coding Specifications

    Clinical Context

    A 64-year-old male with severe emphysematous chronic obstructive pulmonary disease (COPD) and large, apical-predominant bullous destruction is being evaluated for lung volume reduction surgery (LVRS). Over 1 to 9 consecutive days before the planned operative date, the patient receives pre-operative pulmonary surgery services focused on optimization of respiratory status, risk assessment, and procedural preparation. The workflow includes daily clinician evaluation, pulmonary function review, chest imaging review, optimization of bronchodilator and inhaled steroid therapy, smoking cessation counseling, incentive spirometry instruction, targeted pulmonary rehabilitation steps, and coordination with anesthesia and thoracic surgery for perioperative planning. Documentation includes history and physical updates, review of comorbidities (cardiac disease, diabetes), assessment of exercise tolerance, oxygen requirements, arterial blood gas or pulse oximetry trends, and completion of necessary preoperative testing (laboratory studies, ECG, chest CT). Communication with the surgical team and scheduling of operative logistics is documented for each pre-operative session.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    31500Intubation, endotracheal, emergency or for general anesthesiaMay be performed at the time of LVRS; pre-op planning documents expected airway management and potential intubation needs
    94640Pressurized or non-pressurized inhalation treatment for acute airway obstructionMay be used during pre-op optimization to improve bronchospasm control in the days before LVRS
    94010Spirometry, including graphic record, total and timed vital capacityPulmonary function testing commonly performed as part of pre-operative assessment for LVRS candidacy
    71260CT, thorax, high-resolution for lung parenchymaHigh-resolution chest CT is integral to planning LVRS and is reviewed during pre-operative services
    99214Office or other outpatient visit for established patient, moderate complexityTypical E/M code used for daily pre-operative evaluations when significant medical decision making occurs

    Related Modifiers

    10 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…
    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…
    54Modifier ‑54 (“Surgical care only”) is appended to a CPT surgical procedure when the reporting surgeon performs the intraoperative (surgical) component but does not furnish the preoperative and/or…- Use modifier -54 when the reporting surgeon provided only the intraoperative (surgical) component of a procedure and preoperative and/or postoperative management has been or will be provided by…
    55Modifier –55 indicates the billing provider furnished only postoperative management for a procedure that has a global surgical period. According to AAPC, this modifier is appended to the same CPT…- Use modifier -55 when billing the same CPT surgical code that has a 10- or 90-day global period and you, as a provider other than the original surgeon, furnished ONLY postoperative management (no…
    56Modifier ‑56 indicates the reporting provider furnished only the preoperative management for a surgical procedure and did not perform the intraoperative or postoperative care. It is used in…- Use Modifier -56 when a provider performs only the preoperative management in a split‑care situation (one physician manages preop care while a different physician performs the intraoperative…
    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…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…
    82Modifier 82 is appended to a surgical CPT code to indicate that an attending physician acted as an assistant because a qualified resident surgeon was unavailable. In teaching hospitals it documents…- When to use: Append modifier 82 in teaching-hospital settings to indicate a physician served as an assistant surgeon because a qualified resident surgeon was unavailable (includes situations where…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207Q00000X
    363L00000X
    367A00000X
    2470A2800X
    261QI0500X
    175M00000X
    246QB0000X
    246XC2901X

    Related ICD-10-CM Codes

    24 rows

    ICD-10-CM CodeDescription
    C34.90Malignant neoplasm of unspecified part of unspecified bronchus or lung
    C34.91Malignant neoplasm of unspecified part of right bronchus or lung
    C34.92Malignant neoplasm of unspecified part of left bronchus or lung
    I20.9Angina pectoris, unspecified
    I50.21Acute systolic (congestive) heart failure
    I50.9Heart failure, unspecified
    J43.9Emphysema, unspecified
    J44.1Chronic obstructive pulmonary disease with (acute) exacerbation
    J44.9Chronic obstructive pulmonary disease, unspecified
    J84.10Pulmonary fibrosis, unspecified

    Showing 1–10 of 24

    Related Payer Policy Updates

    Specialty: Gastroenterology1 / 3

    10 rows

    PolicyPayerEffective Date
    Percutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disordersbcbsvermont2026-12-01
    Esophagogastroduodenoscopy (EGD) Coverage Policyevicore2026-11-05
    Radiofrequency Therapy for Fecal IncontinenceCigna2026-10-15
    Magnetic Sphincter Augmentation for the Treatment of Gastroesophageal Reflux Disease (GERD)univerahealthcare2026-10-15
    High-Resolution Anoscopy (HRA)Premera Bluecross2026-10-01
    Gastroesophageal and Gastrointestinal (GI) Services and ProceduresColorado Rocky Mountain Health Plans2026-10-01
    Fecal Analysis in the Diagnosis of Intestinal Dysbiosis and Fecal Microbiota Transplant TestingOscar Health2026-10-01
    Serum Testing for Hepatic Fibrosis in the Evaluation and Monitoring of Chronic Liver DiseaseOscar Health2026-10-01
    Pancreatic Enzyme Testing for Acute PancreatitisOscar Health2026-10-01
    Helicobacter pylori TestingOscar Health2026-10-01

    Related Codes

    HCPCS-G9490-HOME-ASSESSMENT-NON-HOMEBOUND

    HCPCS G9490: Home Visit Patient Assessment for Non-Homebound Beneficiary

    HCPCS-G0008-INFLUENZA-VACCINE-ADMINISTRATION

    HCPCS G0008: Administration of Influenza Virus Vaccine

    HCPCS-G0009-PNEUMOCOCCAL-VACCINE-ADMINISTRATION

    HCPCS G0009: Administration of Pneumococcal Vaccine

    HCPCS-G0010-HEPATITIS-B-VACCINE-ADMINISTRATION

    HCPCS G0010: Administration of Hepatitis B Vaccine

    HCPCS-G0011-PREP-COUNSELING-HIV-RISK-REDUCTION-ADHERENCE

    HCPCS G0011: Individual PrEP Counseling, HIV Risk Assessment

    HCPCS-G0012-PRE-EXPOSURE-PROPHYLAXIS-INJECTION-HIV-PREVENTION

    HCPCS G0012: Injection of PrEP Drug for HIV Prevention

    HCPCS-G0013-PREP-INDIVIDUAL-COUNSELING-HIV-RISK-REDUCTION

    HCPCS G0013: Individual PrEP Counseling by Clinical Staff

    HCPCS-G0017-PSYCHOTHERAPY-CRISIS-FIRST-60-MINUTES-NON-OFFICE

    HCPCS G0017: Psychotherapy for Crisis, First 60 Minutes

    HCPCS-G0018-PSYCHOTHERAPY-CRISIS-ADDITIONAL-30-MINUTES-NON-OFFICE

    HCPCS G0018: Psychotherapy for Crisis, Additional 30 Minutes

    HCPCS-G0019-COMMUNITY-HEALTH-INTEGRATION-SDOH-CARE-COORDINATION

    HCPCS G0019: Community Health Integration, Person-Centered Assessment

    Showing 1–10 of 1996

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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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