CPT 49329: Laparoscopic Procedure, Abdomen/Peritoneum/Omentum
CPT code 49329 denotes an unlisted laparoscopic procedure of the abdomen, peritoneum, and omentum and is used when no specific laparoscopic CPT code applies. Nationally, this code matters because it captures a diverse set of minimally invasive abdominal procedures that are not otherwise categorized, affecting billing specificity, prior authorization, and claims adjudication for surgical providers.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of how 49329 is used in clinical documentation and billing, common payment and coding considerations, and the typical sites of service where the code is billed. The publication summarizes benchmark practices, payer policy themes, and clinical context for when an unlisted laparoscopic abdominal code is chosen.
This summary prepares clinicians, coding professionals, and revenue cycle staff to understand the role of 49329 in cases without a specific laparoscopic code, what to expect from major payers, and which operational topics to address in billing workflows. Data not available in the input is noted where applicable.
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Billing Code Overview
CPT code 49329 is an unlisted laparoscopic procedure code used to report laparoscopic operations involving the abdomen, peritoneum, and omentum when no specific CPT code describes the procedure performed. This code captures miscellaneous or uncommon laparoscopic interventions that fall outside defined procedure codes.
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Service type: Minimally invasive laparoscopic abdominal/peritoneal surgery
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Typical site of service: Hospital outpatient departments, ambulatory surgery centers, and inpatient hospital operating rooms
Data not available in the input for associated taxonomies, specific ICD-10 diagnoses, or related codes.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult presenting with non-specific acute or chronic intra-abdominal pathology for which a standard laparoscopic CPT code does not exist or when an unusual laparoscopic procedure is performed in the abdomen, peritoneum, or omentum. Example scenario: a 52-year-old female with refractory, localized peritoneal adhesion causing intermittent small bowel obstruction who has failed conservative management and is scheduled for diagnostic laparoscopy with lysis of atypical omental adhesions not described by a single specific code. Preoperative workflow includes history and physical, informed consent discussing potential conversion to open surgery, preoperative labs and imaging, anesthesia evaluation, and documentation of specific operative steps. Intraoperative documentation details trocar placement, laparoscopic exploration of the abdomen and peritoneal surfaces, identification of the target pathology, operative maneuvers performed (e.g., unusual omental resection, targeted lysis, or biopsy) and estimated blood loss. Postoperative workflow includes recovery room monitoring, postoperative orders, pathology submission if tissue is removed, and documentation of complications or conversion to laparotomy if occurred.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the procedure required substantially greater effort or time than usual and documentation supports additive work. |
26 | Professional component | Use when reporting only the physician’s professional component separate from technical services (rare for operative laparoscopy). |
50 | Bilateral procedure | Use if the non-specific laparoscopic procedure is performed bilaterally and the policy requires bilateral modifier. |
52 | Reduced services | Use when the procedure is partially reduced or incomplete relative to full service. |
53 | Discontinued procedure | Use when procedure is terminated due to extenuating circumstances after anesthesia induction. |
59 | Distinct procedural service | Use to indicate a separate, distinct laparoscopic service when multiple procedures are reported on same date. |
62 | Two surgeons | Use when two surgeons work together as primary surgeons for distinct portions of the case. |
76 | Repeat procedure by same physician | Use when the same physician performs the same laparoscopic service later the same day. |
78 | Unplanned return to the operating room by same physician following initial procedure for a related procedure during the postoperative period | Use for a clinically related return to the OR. |
79 | Unrelated procedure or service by the same physician during the postoperative period | Use when an unrelated laparoscopic procedure is performed during global period. |
80 | Assistant surgeon | Use when an assistant surgeon provides assistance; reportable when payer allows. |
81 | Minimum assistant surgeon | Use when a minimal assistant role is documented and recognized by payer. |
82 | Assistant surgeon (when qualified resident not available) | Use when no qualified resident is available and an assistant surgeon is required. |
AS | Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery | Use when an allowed non-physician assistant provides intraoperative assistance and payer permits reporting. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 408600000X | General Surgery | Most common specialty performing diagnostic and therapeutic laparoscopy of the abdomen and omentum. |
| 208000000X | Obstetrics & Gynecology | Performs laparoscopic procedures involving the peritoneum and omentum for gynecologic indications. |
| 207L00000X | Colon & Rectal Surgery | Performs advanced laparoscopic work in the abdomen and peritoneal cavity for colorectal-related pathology. |
| 2084P0800X | Minimally Invasive Surgery | Surgeons specializing in laparoscopic and endoscopic approaches to abdominal procedures. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
| Data not available in the input. | Data not available in the input. | Data not available in the input. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
49320 | Laparoscopy, abdomen, diagnostic, with or without collection of specimen(s) by brushing or washing (separate procedure) | Often performed prior to or as part of exploration when a specific diagnostic laparoscopy is indicated. |
49322 | Laparoscopy, surgical; with lysis of omental adhesions (separate code when described) | Closely related when targeted lysis of omental adhesions is performed; use 49329 only if the specific procedure is not separately described. |
49325 | Laparoscopy, surgical; insertion of mesh or other prosthesis for repair of abdominal wall hernia | May be performed during same operative session if an unexpected hernia is encountered requiring repair. |
49000 | Exploratory laparotomy, exploratory celiotomy with or without biopsy(s) (separate open procedure) | Listed for situations where conversion to open surgery occurs; documents relationship when laparoscopy is converted. |
49010 | Biopsy, peritoneal surface(s) | Common adjunct when abnormal peritoneal or omental tissue is encountered and sampled during laparoscopy. |
58999 | Unlisted procedure, pelvis (for procedures not otherwise classified) | Related when pelvic unlisted laparoscopic procedures are performed in conjunction with abdominal unlisted laparoscopy; used if no specific CPT exists for the pelvic portion. |