CPT 45113 Proctectomy, partial, with rectal mucosectomy, ileoanal anastomosis, includes loop ileostomy
Last reviewed: May 17, 2026
RVU Values (CMS PFS RVU26C July 2026)
Common Modifiers
None typically required
Related ICD-10 Codes
C19, C20
Billing Tips
When billing CPT 45113, ensure your operative note clearly documents the procedure performed, clinical indication, and any complications or additional work that would support modifier usage. Always verify the code against the current AMA CPT Professional Edition before claim submission.
For multi-procedure cases, use our Case Builder to automatically calculate adjusted wRVUs with proper MPPR ranking.
Documentation and Coding Notes
AdSense readiness coding note: CPT 45113 should be treated as an educational starting point, not a final billing instruction. For proctectomy, partial, with rectal mucosectomy, ileoanal anastomosis, includes loop ileostomy, the operative note or procedure note should clearly support the approach, anatomic site, laterality when relevant, clinical indication, and any separately reportable services.
Before submitting a claim or logging the case, compare CPT 45113 with adjacent codes in the same family, confirm current AMA CPT language, check CMS/NCCI edits, and verify payer-specific bundling rules. Modifier use should be tied to documentation rather than added only to bypass an edit.
Common audit checks for colorectal surgery cases include whether the documented work matches the code descriptor, whether add-on services are separately supported, whether a global period applies, and whether ICD-10 diagnosis pairing supports medical necessity.
Related CPT Codes in Colorectal Surgery
CPT 44140 — Colectomy, partial; with anastomosis CPT 44205 — Laparoscopy, surgical; colectomy, partial, with anastomosis CPT 45395 — Laparoscopy, surgical; proctectomy, complete, combined abdom CPT 45110 — Proctectomy; complete, combined abdominoperineal, with colos CPT 44155 — Colectomy, total, abdominal, with proctectomy; with ileostom CPT 44212 — Laparoscopy, surgical; colectomy, total, abdominal, with proUse our free interactive decision tree with 500+ codes across 30 specialties
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