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    v1.0.30
    OpenPayerBilling CodesExcision Procedures on the StomachCPT cpt-43633-partial-gastrectomy-stomach-resection-reconstruction
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    CPT 43633: Distal Gastrectomy with Gastrojejunostomy

    Medicare pays $1786 on average nationally for this procedure.

    CPT code 43633 describes a distal gastrectomy in which the provider removes the lower part of the stomach and performs an anastomosis connecting the remaining stomach to the proximal small intestine, representing an open or laparoscopic gastric resection with gastrojejunostomy; the service is a surgical abdominal procedure typically performed in an inpatient hospital operating room or major ambulatory surgery center for conditions requiring partial stomach resection.

    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 typical patient is a 55–70 year-old with symptomatic peptic ulcer disease complicated by gastric outlet obstruction, refractory nonhealing gastric ulcer, or distal gastric malignancy where subtotal gastrectomy with gastrojejunostomy is indicated. The workflow begins with outpatient evaluation for persistent epigastric pain, nausea, vomiting, weight loss, or anemia. Diagnostic workup includes upper endoscopy with biopsy, abdominal CT scan, and preoperative medical optimization. The patient is admitted on the day of surgery to an inpatient surgical service. The operative procedure involves resection of the distal stomach (antrectomy or distal subtotal gastrectomy), creation of a gastrojejunostomy (Billroth II) or Roux-en-Y reconstruction as appropriate, hemostasis, and layered closure. Postoperative care includes monitoring in PACU, inpatient pain control, DVT prophylaxis, early ambulation, gradual advancement of diet, and discharge planning with follow-up for pathology results and nutrition counseling.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    43235Upper gastrointestinal endoscopy, flexible, transoral; with biopsy, single or multiplePreoperative diagnostic EGD with biopsy to evaluate gastric lesions.
    44320Exploratory laparotomy, peritoneal cavity; with biopsy(s) (single or multiple)Intraoperative exploration or biopsy when malignancy is suspected or staging is needed.
    49650Laparoscopy, surgical; partial gastrectomyMinimally invasive approach option for distal gastrectomy when performed laparoscopically.
    43845Revision of gastroenterostomy, without vagotomy, other than for bleedingPerformed for complications or stenosis after initial gastrojejunostomy.
    73610Radiologic examination, upper GI tract, including small bowel follow-through when indicatedPostoperative imaging study to assess anastomotic integrity or obstruction (diagnostic adjunct).

    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…
    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…
    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…
    66Modifier 66 (Surgical Team) is used when three or more surgeons act as primary surgeons on a single, highly complex procedure. The AMA defines it for use when a surgical team — often composed of…- Use modifier 66 when three or more surgeons act as primary surgeons working collaboratively as a surgical team on a single, highly complex or difficult procedure (for example organ…
    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…
    81Modifier -81 indicates a physician served as a minimal assistant surgeon for part—not all—of an operative procedure. Use when a physician’s assisting role is limited and does not represent full…- Use CPT modifier -81 when a physician acts as a minimum assistant surgeon who assists during only part (a limited portion) of an operative procedure; append -81 to the primary surgical CPT code to…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    58Modifier 58 (Staged or related procedure/service by the same physician during the postoperative period) indicates that a subsequent procedure performed by the same provider during the…- Use modifier 58 when the same physician/QHP performs a procedure during the postoperative/global period of an earlier procedure and the subsequent procedure is either planned or anticipated…
    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 Code
    208000000X
    208800000X
    363L00000X
    246YR1600X
    251300000X
    310400000X
    2278E1000X
    320600000X

    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

    CPT-43605-OPEN-BIOPSY-EXCISION-GASTRIC-LESION

    CPT 43605: Open Biopsy and Excision of Gastric Lesion

    CPT-43610-GASTRIC-EXPLORATION-LESION-EXCISION

    CPT 43610: Exploration of Stomach and Excision of Lesion

    CPT-43611-GASTRIC-TUMOR-EXCISION-SURGICAL-ONCOLOGY

    CPT 43611: Excision of Cancerous Tumor of the Stomach

    CPT-43620-ESOPHAGOENTEROSTOMY-AFTER-GASTRECTOMY

    CPT 43620: Esophagojejunostomy After Gastrectomy

    CPT-43621-TOTAL-GASTRECTOMY-SMALL-BOWEL-ANASTOMOSIS

    CPT 43621: Total Gastrectomy with Small Bowel-to-Stomach Anastomosis

    CPT-43622-TOTAL-GASTRECTOMY-ESOPHAGODUODENAL-POUCH-RECONSTRUCTION

    CPT 43622: Total Gastrectomy with Esophagoduodenostomy

    CPT-43631-PARTIAL-GASTRECTOMY-GASTRODUODENOSTOMY

    CPT 43631: Partial Gastrectomy with Gastroduodenostomy (Billroth I)

    CPT-43632-PARTIAL-GASTRECTOMY-WITH-GASTROJEJUNOSTOMY

    CPT 43632: Partial Gastrectomy with Gastrojejunostomy

    CPT-43634-PARTIAL-GASTRECTOMY-WITH-INTESTINAL-POUCH-RECONSTRUCTION

    CPT 43634: Distal Gastrectomy with Intestinal Pouch Creation

    CPT-43635-GASTRIC-RESECTION-WITH-VAGOTOMY

    CPT 43635: Vagotomy with Distal Gastrectomy

    Showing 1–10 of 12

    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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