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    v1.0.31
    OpenPayerBilling CodesExcision Procedures on the Intestines (Except Rectum)CPT cpt-44145-partial-colectomy-colorectal-anastomosis
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    CPT 44145: Partial Colectomy with Colorectal Anastomosis

    Medicare pays $1529 on average nationally for this procedure.

    CPT code 44145 describes a surgical procedure in which the provider removes a portion of the colon (partial colectomy) and restores intestinal continuity by creating an end-to-rectum anastomosis; this is an operative gastrointestinal surgery (colon resection with colorectal anastomosis) typically performed in an inpatient hospital operating room or similar surgical facility and classified as abdominal/pelvic general surgery.

    For related coverage guidance, see recent payer policy updates: Achalasia and Gastroesophageal Reflux Disease (GERD) - Minimally Invasive Procedures - Medical Policy, Esophageal Brush Biopsy, Percutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disorders.

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    Clinical & Coding Specifications

    Clinical Context

    A typical patient is a 58-year-old adult with symptomatic left-sided colon pathology such as a segmental colon cancer, complicated diverticulitis with stricture, or ischemic colitis localized to the sigmoid or descending colon. The patient presents with abdominal pain, change in bowel habits, possible bleeding, and CT or colonoscopy findings confirming a diseased segment requiring resection. After preoperative evaluation (history, physical, labs, anesthesia assessment), the patient is taken to an operating room in an acute care hospital or ambulatory surgery center equipped for major abdominal surgery. The surgeon performs a segmental colectomy removing the diseased portion of colon and performs a colorectal anastomosis connecting the proximal colon end to the rectum to restore intestinal continuity. Intraoperative tasks include mobilization of the colon, vascular control, segmental resection, specimen extraction, anastomotic technique (hand-sewn or stapled), leak test as indicated, and hemostasis. Postoperative workflow includes recovery in PACU, inpatient monitoring for ileus, anastomotic leak, infection, pain control, early ambulation, bowel function assessment, and discharge planning with follow-up.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    44140Colectomy, partial; with anastomosis (e.g., ileocolic, colocolic)Similar partial colectomy codes for resections of other colon segments; selected when anatomy differs from colon-to-rectum anastomosis
    44146Colectomy, partial; with coloproctostomy (low pelvic anastomosis)Used for low colorectal anastomoses; may be selected for resections requiring a very low rectal anastomosis
    44160Colectomy, partial; with colostomy or ileostomy, with closure of other end (e.g., Hartmann reversal)Performed when diversion or stoma creation is required instead of immediate anastomosis or when reversal of diversion follows
    44204Laparoscopy, surgical; colectomy, partial, with anastomosisLaparoscopic approach equivalent when the procedure is performed minimally invasively
    49420Removal of temporary transanal rectal tube or other rectal decompression deviceAncillary procedures performed in perioperative management or in complication care
    G0399Unlisted procedure, hospital outpatient departmentUsed only when no specific code fits a complex or extended colon procedure variant in outpatient setting

    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…
    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…
    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…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    79Modifier 79 indicates a surgical procedure performed during the postoperative global period of a prior surgery that is unrelated to the original procedure. Per AMA/CPT and CMS guidance, it is…- Use modifier 79 when the same physician (or same‑specialty physician in the same group) performs a surgical procedure during the postoperative global period of a prior surgery and the new procedure…
    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…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207L00000X
    2080P0206X
    2086S0122X
    208D00000X
    363L00000X
    207RE0101X
    335V00000X
    261QG0250X

    Related Payer Policy Updates

    Specialty: Gastroenterology1 / 4

    10 rows

    PolicyPayerEffective Date
    Achalasia and Gastroesophageal Reflux Disease (GERD) - Minimally Invasive Procedures - Medical PolicyHealth-New-England2027-02-01
    Esophageal Brush Biopsycaresourcegeorgia2026-12-01
    Percutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disordersbcbsvermont2026-12-01
    Gastric Pacing/Gastric Electrical Stimulation (GES)Cigna2026-11-15
    Percutaneous Electrical Nerve Field Stimulation for Disorders of Gut-Brain Interactionpremerabluecrossofwashington2026-11-06
    Percutaneous electrical nerve field stimulation for disorders of gut-brain interactionpremerabluecrossofwashington2026-11-06
    Percutaneous Electrical Nerve Field Stimulation for Disorders of Gut-Brain Interactionpremerabluecrossofwashington2026-11-06
    Esophagogastroduodenoscopy (EGD) Coverage Policyevicore2026-11-05
    Non-invasive Testing for Liver FibrosisModa Health2026-11-01
    Surgical Site of Care - Colonoscopy and Sigmoidoscopyregence2026-11-01

    Related Codes

    CPT-44100-SMALL-INTESTINE-CAPSULE-BIOPSY

    CPT 44100: Small Intestine Biopsy via Oral Capsule

    CPT-44110-OPEN-EXCISION-INTESTINAL-LESION-SINGLE-INCISION

    CPT 44110: Excision of Lesion(s) From Small or Large Intestine

    CPT-44111-INTESTINAL-LESION-EXCISION-MULTIPLE-INCISIONS

    CPT 44111: Excision of Intestinal Lesions via Multiple Incisions

    CPT-44120-SMALL-INTESTINE-RESECTION-PRIMARY-ANASTOMOSIS

    CPT 44120: Small Bowel Resection with Primary Anastomosis

    CPT-44121-ADDITIONAL-SMALL-INTESTINE-RESECTION-ANASTOMOSIS

    CPT 44121: Additional Small Intestine Resection and Anastomosis

    CPT-44125-SMALL-INTESTINE-RESECTION-WITH-STOMA-CREATION

    CPT 44125: Small Bowel Resection with Enterostomy

    CPT-44126-SMALL-BOWEL-RESECTION-CONGENITAL-ATRESIA-END-TO-END-ANASTOMOSIS

    CPT 44126: Small Bowel Resection for Intestinal Atresia with Anastomosis

    CPT-44127-SMALL-BOWEL-RESECTION-ANASTOMOSIS-INTESTINAL-ATRESIA

    CPT 44127: Resection and Anastomosis for Congenital Small-Bowel Atresia

    CPT-44128-SMALL-BOWEL-RESECTION-ANASTOMOSIS-CONGENITAL-ATRESIA

    CPT 44128: Resection of Small Intestine for Congenital Atresia

    CPT-44130-INTESTINAL-ANASTOMOSIS-BOWEL-RESECTION-ANASTOMOSIS

    CPT 44130: Intestinal Anastomosis, With or Without Stoma

    Showing 1–10 of 29

    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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