Summary & Overview
CPT 0184T: Transanal Endoscopic Microsurgical Excision of Rectal Tumor
CPT code 0184T represents transanal endoscopic microsurgical excision of a rectal tumor performed through a proctoscope with the goal of preserving the anus. This procedure matters nationally as a specialized, organ-preserving surgical option for select rectal lesions that can reduce morbidity compared with more extensive resections. Payers and clinicians track utilization and coverage because the procedure involves specialized equipment, perioperative planning, and potential implications for surgical setting and follow-up care. Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will get a concise clinical and billing overview of the service, typical sites of care, common modifiers associated with reporting, and where to find related coding information. The summary outlines clinical context for use of transanal endoscopic microsurgery, considerations for facility billing versus physician professional services, and expected documentation elements that support medical necessity. Data not available in the input is noted where applicable, and the publication focuses on national policy and billing implications rather than state-specific rules or individualized clinical recommendations.
Billing Code Overview
CPT code 0184T describes a surgical procedure to identify and remove a rectal tumor using a proctoscope while preserving the anus. The procedure is performed via a transanal endoscopic microsurgical approach, which allows local excision of rectal lesions with direct visualization through the anus.
Service Type: Surgical — transanal endoscopic microsurgery
Typical Site of Service: Ambulatory surgical center or hospital operating room with proctoscopy/endoscopic equipment
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient presents with a solitary, well-circumscribed rectal lesion located 6–12 cm from the anal verge identified on colonoscopy and confirmed by biopsy as a benign adenoma or early-stage malignant lesion amenable to local excision. Preoperative evaluation includes history and physical, focused anorectal exam, endorectal ultrasound or MRI to assess depth of invasion, and anesthesia evaluation. The procedure, coded as 0184T, is performed in an operating room or ambulatory surgical center under general or regional anesthesia with the patient in lithotomy or prone jackknife position. The surgeon uses a proctoscope and transanal endoscopic microsurgical (TEMS) instrumentation to visualize, sharply dissect, and excise the lesion with full-thickness or partial-thickness margins as indicated, preserving the anal sphincter and anorectal continuity. Hemostasis is achieved, and the rectal wall defect is closed primarily when appropriate. Postoperative workflow includes recovery in PACU, short inpatient observation if indicated for comorbidities or complications, pathology review of the specimen, and scheduled outpatient follow-up for wound assessment and surveillance colonoscopy per oncologic or adenoma guidelines.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Default/No modifier | Use when no special billing modifier applies to the service. |
22 | Increased procedural services | Use when work or complexity substantially exceeds typical for 0184T (documentation required). |
23 | Unusual anesthesia | Use when procedure performed under general anesthesia due to unusual circumstances unrelated to the procedure itself. |
52 | Reduced services | Use when a portion of the planned procedure is intentionally not completed or is significantly reduced. |
53 | Discontinued procedure | Use when the procedure is terminated due to extenuating circumstances after anesthesia induction. |
62 | Two surgeons | Use when two surgeons work together as primary surgeons performing distinct surgical portions. |
66 | Surgical team (clinical) | Use when a surgical team (multiple qualified surgeons) performs portions of the procedure under a team model. |
78 | Unplanned return to OR by same surgeon | Use when patient returns to operating room for related procedure during the global period. |
80 | Assistant surgeon | Use when an assistant surgeon is present and assists with the procedure. |
81 | Minimum assistant surgeon | Use when a minimum assistant (often during teaching hospitals) is present. |
82 | Assistant surgeon (when qualified resident not available) | Use when a qualified resident is not available and an assistant is required. |
73 | Discontinued outpatient hospital/ASC prior to anesthesia | Use when procedure cancelled before anesthesia is administered. |
76 | Repeat procedure by same physician | Use if the same physician performs an independent repeat of the same service (not in provided modifier list — excluded). |
TC | Technical component | Use if billing only the technical component when separate professional component billing occurs (e.g., facility billing for equipment/supplies). |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 2080S0002X | Colorectal Surgery | Primary specialty performing transanal endoscopic microsurgery. |
| 207L00000X | General Surgery | General surgeons with colorectal expertise commonly perform TEMS. |
| 208000000X | Colon & Rectal Surgery | Focused specialty for complex rectal procedures and local excisions. |
| 2086S0112X | Surgical Oncology | Surgical oncologists perform local excision when cancer risk is present. |
| 207P00000X | Gastroenterology | Gastroenterologists perform diagnostic work-up and endoscopic localization prior to TEMS. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
K63.5 | Polyp of colon | Rectal polyps identified for excision via transanal approaches including TEMS. |
D12.6 | Benign neoplasm of rectum | Common indication for local excision with the intent of complete removal and pathology. |
C20 | Malignant neoplasm of rectum | Early-stage rectal cancer sometimes managed with local excision in select cases. |
K62.5 | Hemorrhage of anus and rectum | Potential presenting symptom prompting diagnostic evaluation leading to identification of resectable lesion. |
K51.9 | Ulcerative colitis, unspecified | Chronic inflammatory bowel disease may be part of the history and influence decision-making for local excision. |
R19.5 | Other fecal abnormalities | Symptoms such as bleeding or changes in stool prompting workup and diagnosis of rectal lesions. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
45380 | Colonoscopy, flexible; with biopsy, single or multiple | Diagnostic or surveillance colonoscopy performed before or after 0184T for lesion identification and follow-up. |
49000 | Unlisted laparoscopy procedure, abdomen, peritoneum and omentum | Sometimes used when additional laparoscopic assistance or abdominal evaluation is required in conjunction with transanal work (unlisted; report when no specific CPT exists). |
55920 | Excision of lesion of rectum via transanal approach, single, simple (eg, polypectomy) | Alternative local excision codes for smaller lesions or simpler transanal excisions when TEMS is not used. |
44140 | Colectomy, partial; with anastomosis | Performed when lesion cannot be managed by local excision and a segmental resection is required following staging or intraoperative findings. |
51702 | Introduction of needle or catheter into bladder for diagnostic or therapeutic purposes (Urethral catheterization) | Common ancillary service for perioperative urinary catheter placement and management during anorectal surgery. |