Billing code
S171A — Resection With Anastomosis - Left Hemicolectomy With Anterior Resection Or Proctosigmoidectomy (anastomosis Below Peritoneal Reflection & Mobilization Of Splenic Flexure)
Left hemicolectomy, low anastomosis
Bill S171 for a left hemicolectomy with anterior resection or proctosigmoidectomy, anastomosis below the peritoneal reflection and splenic flexure mobilization.
Watch for: Splenic flexure mobilization is included, so don't add E796; add E793 when done laparoscopically.
| Provider | Specialist | Assistant | Anaesthetist | Non-anaesthetist |
|---|---|---|---|---|
| $1,290.55 | $0.00 | $90.37 | $127.68 | $127.68 |
- Code
- S171A
- Description
- Resection With Anastomosis - Left Hemicolectomy With Anterior Resection Or Proctosigmoidectomy (anastomosis Below Peritoneal Reflection & Mobilization Of Splenic Flexure)
- FHO+ basket
- Not in the FHO+ base rate basket (Schedule 2 or 2B).
- Effective date
- Apr 1, 2026
- Termination date
- No end date
Explanation
Updated October 26, 2026
Left hemicolectomy with anterior resection or proctosigmoidectomy, with anastomosis below the peritoneal reflection and splenic flexure mobilization.
What it covers
S171 is left hemicolectomy with anterior resection or proctosigmoidectomy, with the anastomosis below the peritoneal reflection and mobilization of the splenic flexure (S20).
Resection of another part of the large intestine is S167 (S20).
Billing rules
- Splenic flexure mobilization is part of S171; the E796 add-on is listed only for S167 (S20).
- Add E808 for neo-rectal pouch formation (S20).
- Add E793 when done laparoscopically or laparoscopic-assisted (S20).
- If a laparoscopic attempt is converted to laparotomy, E860 is payable in addition (SP5).
- With other procedures under the same anaesthetic, the major procedure is paid in full and the others at 85% (SP2).
- E676 morbid obesity premium may apply when BMI is over 40 and recorded (SP6, SP7).
Often billed with
- E808 neo-rectal pouch formation (S20).
- E793 laparoscopic approach (S20).
Related codes: S167, S169, S172, S166, E808, E793
Source: Schedule of Benefits (July 1, 2026), Digestive System Surgical Procedures, Intestines (Except Rectum), page S20.
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