CPT 44406 Stoma Colonoscopy EUS Reimbursement | OpenPayer

Summary & Overview

CPT 44406: Stoma-based Colonoscopy with Endoscopic Ultrasound

CPT code 44406 represents a combined procedure: colonoscopy performed through a stoma with endoscopic ultrasound (EUS) of the large intestine limited to the sigmoid, descending, transverse, or ascending colon and cecum, including nearby structures. This code captures a specialized diagnostic and potentially therapeutic endoscopic service that integrates luminal visualization via a stoma access point with ultrasound imaging to assess mural and extramural pathology. Nationally, the code matters because it describes a higher-complexity service used in patients with stomas who require advanced endoscopic evaluation that may influence surgical planning, oncologic staging, or targeted interventions.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context and service setting, typical utilization considerations for stoma-based colonoscopy with EUS, and what to expect in payer coverage review. The publication outlines benchmarks and policy-relevant points where available and notes when input data elements are missing. This summary is intended for clinicians, coding and billing staff, and policy analysts seeking a national perspective on the clinical definition and payer landscape for CPT code 44406.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 44406colonoscopyendoscopic ultrasoundstomagastroenterologyendoscopyambulatory surgical centerhospital outpatientprocedure coding

Billing Code Overview

CPT code 44406 describes colonoscopy performed through a preexisting stoma (an artificial opening in the skin) with an added endoscopic ultrasound (EUS) examination of the large intestine limited to the sigmoid, descending, transverse, or ascending colon and cecum, including evaluation of nearby structures.

Service type: Combined endoscopic stoma-based colonoscopy with endoscopic ultrasound of the large intestine
Typical site of service: Ambulatory surgical center or hospital endoscopy suite where stoma-based endoscopic procedures and EUS are performed

Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes.

Clinical & Coding Specifications

Clinical Context

A 68-year-old patient with a permanent colostomy presents with intermittent lower abdominal pain and a change in stoma output. The gastroenterologist is asked to evaluate for anastomotic recurrence, colorectal neoplasm near the stoma, or inflammatory changes. The procedure performed is a colonoscopy through the stoma (stomal colonoscopy) combined with endoscopic ultrasound (EUS) of the large intestine limited to the sigmoid, descending, transverse, or ascending colon and cecum and nearby structures. Pre-procedure workflow includes history and medication review, informed consent, appropriate bowel/stoma preparation, and peri-procedural anesthesia evaluation. In the procedure suite, the provider introduces the colonoscope through the stoma, advances to the indicated segments, performs visual mucosal inspection, obtains biopsies or cytology if indicated, and conducts endoscopic ultrasound to assess wall layers and adjacent lymph nodes or masses. Post-procedure, the patient is recovered, given discharge instructions addressing stoma care, and pathology follow-up is arranged as needed.

Coding Specifications

Modifier	Description	When to Use
`11`	Normal or usual procedural service	Use when the procedure is performed as planned without complications.
`22`

CPT 44391: Colonoscopy via Colostomy Stoma with Endoscopic Repair

CPT-44381-ILEOSCOPY-THROUGH-STOMA-WITH-BALLOON-DILATION

CPT 44381: Ileoscopy Through Stoma with Endoscopic Balloon Dilation

CPT-44401-STOMAL-COLONOSCOPY-LESION-DESTRUCTION

CPT 44401: Stomal Colonoscopy With Lesion Destruction

CPT-44386-ENDOSCOPIC-POUCHOSCOPY-WITH-BIOPSY

CPT 44386: Endoscopic Examination of Ileal Pouch With Biopsy

CPT-44403-STOMAL-COLONOSCOPY-WITH-MUCOSAL-EXCISION

CPT 44403: Stomal Colonoscopy with Endoscopic Mucosal Excision

CPT-44388-COLONOSCOPY-VIA-COLOSTOMY-STOMA-SURVEILLANCE

CPT 44388: Colonoscopy via Colostomy Stoma for Surveillance

CPT-44380-STOMAL-ILEOSCOPY-ENDOSCOPIC-ILEUM-EXAMINATION

CPT 44380: Stomal Ileoscopy, Endoscopic Examination of Ileum

CPT-44402-STOMA-COLONOSCOPY-WITH-STENT-PLACEMENT

CPT 44402: Colonoscopy via Stoma with Endoscopic Stent Placement

CPT-44385-ILEAL-POUCH-ENDOSCOPIC-EVALUATION-WITH-BIOPSY-WASHINGS

CPT 44385: Endoscopic Evaluation of Ileal Pouch with Specimen Collection

CPT-44404-COLONOSCOPY-VIA-COLOSTOMY-WITH-SUBMUCOSAL-INJECTION

CPT 44404: Colonoscopy via Colostomy with Submucosal Injection

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Taxonomy Code	Specialty	Notes
`207RC0000X`	Colon and Rectal Surgery	Surgeons specializing in colorectal procedures perform stomal colonoscopy and related interventions.
`207L00000X`	Gastroenterology	Gastroenterologists perform colonoscopy via stoma and EUS of the large intestine.
`207V00000X`	Surgery-General	General surgeons with endoscopy skills may perform this procedure in operative settings.
`363L00000X`	Anesthesiology	Anesthesiologists provide sedation or general anesthesia when indicated for complex or high-risk patients.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`K51.90`	Ulcerative colitis, unspecified, without complications	Inflammatory disease prompting colonoscopic evaluation and EUS for wall assessment.
`K50.90`	Crohn disease, unspecified, without complications	Crohn disease involving large bowel or peristomal disease assessed with colonoscopy and EUS.
`Z93.3`	Colostomy status	Identifies presence of a colostomy/stoma through which the colonoscopy is performed.
`C18.9`	Malignant neoplasm of colon, unspecified	Suspected or known colon cancer near stoma requiring surveillance or staging with EUS.
`R19.7`	Diarrhea, unspecified	Change in stoma output prompting diagnostic evaluation.
`K91.2`	Postoperative intestinal obstruction	Post-surgical complications near stoma that may warrant endoscopic assessment.
`K57.30`	Diverticulosis of large intestine without perforation or abscess	Localized disease or complications near stoma evaluated endoscopically.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`45378`	Colonoscopy, flexible; diagnostic, including collection of specimen by brushing or washing, when performed (separate procedure)	Often used for diagnostic colonoscopy via the rectum; conceptually related diagnostic code when EUS is not performed or when colonoscopy of non-stomal route is done.
`43238`	Upper GI endoscopy with EUS and ultrasound-guided aspiration/biopsy, transesophageal, diagnostic, with or without brushing	Represents EUS methodology; included to show parallel EUS coding principles though anatomical site differs.
`76942`	Ultrasonic guidance for needle placement (eg, biopsy, aspiration, injection, localization device)	May be reported when EUS-guided fine needle aspiration or biopsy of peri-colonic structures is performed in addition to the EUS exam.
`45380`	Colonoscopy, flexible; with biopsy, single or multiple	Reported when biopsy specimens are obtained through the stoma during colonoscopic examination.
`45385`	Colonoscopy, flexible; with removal of tumor(s), polyp(s) by snare technique	Used when polypectomy is performed during stomal colonoscopy.
`0191T`	Endoscopic ultrasound (EUS) of the colon (unlisted or category III when applicable)	Related to the EUS component; specific EUS colon codes may be assigned per payer guidance and should be cross-checked with current coding manuals.

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