T18.3XXD — Foreign body in small intestine, subsequent encounter
ICD-10-CM
Prior Authorization
No Prior Auth Required
Code is covered without prior authorization (high confidence)
Documentation Required
- This billing and coding guidance complements Local Coverage Determination L34434; follow LCD L34434 for clinical coverage criteria and required documentation for claims.
- All services billed with unlisted procedure codes must include sufficient medical records and supporting documentation to allow development and medical review.
- The medical record must document the medical reasonableness, necessity, and clinical frequency of the diagnostic colonoscopy or sigmoidoscopy and be available to the Contractor upon request.
- Documentation must indicate the precise areas scoped and the depth reached during colonoscopy.
Key Coverage Criteria
- Diagnostic colonoscopy or sigmoidoscopy is covered to directly visualize the lower gastrointestinal tract (colon, rectum, sigmoid) to detect polyps, tumors, or other intestinal lesions.
- Diagnostic colonoscopy is covered when identification of the site of pathology and/or obtaining a biopsy during the procedure is clinically indicated.
- A follow-on screening colonoscopy is covered after a positive covered blood-based biomarker noninvasive colorectal cancer (CRC) screening test per NCD 210.3, effective 2025-01-01.
- Esophagogastroduodenoscopy (EGD) is covered when it meets the reasonable and necessary requirements specified in Local Coverage Determination L33583.
- A colonoscopy may be billed when a sigmoidoscope is used only if the bowel is sufficiently short that the entire colon can be examined and this fact is clearly documented in the clinical record.
- An incomplete colonoscopy (inability to advance the colonoscope to the cecum or colon‑small intestine anastomosis due to unforeseen circumstances) is billed using codes 44388, 45378, G0105 or G0121 with modifier -53.
14 Active Policies
A56394 — Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic
J05
L34614 — Colonoscopy and Sigmoidoscopy-Diagnostic
J05
L33583 — Diagnostic and Therapeutic Esophagogastroduodenoscopy
J09
A57063 — Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy
J09
Related Codes
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