CCSD code G3210 – Gastrojejunostomy billing reference

Key takeaways

CCSD Code G3210 is the code for a primary gastro-jejunostomy (a new stomach-to-jejunum anastomosis) in UK private practice, and G3220 is the separate revision code.

The code applies to both open and laparoscopic approaches, though the operative note must clearly state the surgical approach used.

CCSD lists G3210 and G3220 as an unacceptable combination, so a take-down plus a new anastomosis is billed under one code, not both.

Pre-authorisation from UK private insurers is standard for elective gastrojejunostomy, and palliative cases need specific diagnosis coding and supporting clinical evidence.

Pabau’s practice software sends G3210 claims through Healthcode to insurers such as Bupa and AXA Health, while your billing team chooses and checks the code.

CCSD Code G3210: definition and scope

CCSD Code G3210 is the Clinical Coding and Schedule Development (CCSD) procedure code for gastrojejunostomy, a new anastomosis between the stomach and the jejunum. It sits in Chapter 11 of the CCSD schedule, which covers the abdomen, under section 11.2.0 Stomach. UK private medical insurers map their own fees and claim checks to the schedule’s codes. Therefore, the right stomach-section code is the starting point for a clean claim.

Procedures elsewhere in the schedule each have their own page in our CCSD codes for practices reference.

The schedule descriptor is simply “Gastro-jejunostomy”. G3210 covers creating a primary gastrojejunal anastomosis, not revising one. In contrast, any revision of a prior gastrojejunostomy falls under G3220. In addition, any extra bowel resection performed in the same sitting, unless bundled by insurer-specific rules, may require a separate code.

What the procedure involves

Gastrojejunostomy creates a new conduit between the stomach and a loop of small bowel (the jejunum), bypassing the pylorus and duodenum. It restores gastric emptying when a blockage obstructs the normal outflow, or diverts contents away from a diseased or resected segment of gut.

Surgeons perform the anastomosis by one of two main approaches:

• Open laparotomy: the surgeon opens the abdomen through a midline or upper transverse incision. Next, they identify the stomach and jejunum and fashion the anastomosis with sutures or a linear stapler.
• Laparoscopic approach: the surgeon places ports and creates the anastomosis with laparoscopic instruments and an endoscopic stapler. Document any conversion to open surgery.

The anastomosis may be a simple loop gastrojejunostomy or a Roux-en-Y arrangement. In a Roux-en-Y, the surgeon divides a section of jejunum and reroutes it to reduce bile reflux into the stomach. Importantly, both configurations fall within the G3210 code scope when the primary intent is creating the gastrojejunal connection.

Clinical indications: when is gastrojejunostomy performed?

Gastric outlet obstruction (GOO) is the most common indication for gastrojejunostomy in UK private surgical practice. GOO occurs when a blockage at the pylorus stops gastric emptying, and the bypass restores passage of food without requiring resection of the obstructing lesion.

The principal clinical situations that lead to G3210 billing include:

• Malignant gastric outlet obstruction: inoperable pancreatic or gastric cancer compressing the duodenum, where gastrojejunostomy provides palliative relief of symptoms. ICD-10 codes C25.x (pancreatic cancer) or C16.x (gastric cancer) support the claim.
• Benign gastric outlet obstruction: fibrotic stricture from longstanding peptic ulcer disease (PUD) causing duodenal narrowing. ICD-10 K26.x (duodenal ulcer; K27.x if the site is unspecified) applies.
• Post-surgical reconstruction: after partial gastrectomy where restoration of continuity requires a new gastrojejunal anastomosis rather than gastroduodenostomy.
• Afferent loop complications: reconstruction after failed or complicated prior gastric surgery where the original outflow is no longer viable.

For this reason, coders should pair G3210 with the most precise ICD-10 diagnosis code available. Otherwise, a claim listing only a non-specific abdominal diagnosis code alongside G3210 is a predictable denial trigger for most UK private insurers.

What CCSD Code G3210 includes and excludes

Understanding the bundling scope of G3210 prevents both undercoding (missing billable components) and overcoding (billing items separately when the code already covers them). The table below summarises what the code encompasses and what falls outside it.

G3210 vs G3220: gastrojejunostomy vs revision

G3220 covers the revision of a gastrojejunostomy, meaning the surgical modification or refashioning of an existing anastomosis. Therefore, it is not interchangeable with G3210. Picking the wrong one is a predictable trigger for insurer queries, because the operative note shows whether a prior anastomosis existed.

When the surgeon takes down an old anastomosis and creates a new one in the same sitting, the claim still carries one code. CCSD lists G3210 and G3220 as an unacceptable combination, so they are not billed together under CCSD principles, although individual insurers may differ. Instead, choose the code the operative note supports, and confirm it with the insurer before you send the claim. The diagram below reduces that choice to one question about the patient’s surgical history.

Neighbouring CCSD codes in the stomach section

Section 11.2.0 of the CCSD schedule groups the stomach procedures. For this reason, coders in upper GI surgery should know the codes around G3210, so they avoid upcoding, undercoding, or mixing up procedures with different bundling rules.

G3800 is a last resort, because insurers scrutinise catch-all codes more closely than exact ones. As a result, sending G3800 when G3210 or G3220 clearly applies risks denial and audit flags.

Documentation requirements for a G3210 claim

Every G3210 claim needs an operative note detailed enough for the insurer to validate the procedure without asking for more information. Missing or ambiguous documentation is the primary driver of initial claim rejections for gastric surgery codes.

The operative note for a G3210 claim should capture all of the following:

• Surgical approach: explicitly state whether the surgeon operated open or laparoscopically, and document any conversion from laparoscopic to open.
• Anastomotic technique: describe how the surgeon fashioned the anastomosis (hand-sewn or stapled), the orientation (antecolic or retrocolic), and the configuration (loop or Roux-en-Y).
• Indication: state the confirmed clinical diagnosis driving the procedure (e.g. gastric outlet obstruction secondary to pancreatic adenocarcinoma, or benign pyloric stricture from peptic ulcer disease).
• Findings at surgery: document the intraoperative findings, including the site and nature of the obstruction or pathology bypassed.
• Concurrent procedures: list any extra procedures done in the same sitting, such as drain insertion, feeding jejunostomy or biopsy. Include bundled ones, so the insurer can see the coder considered them.

A note that describes “gastrojejunostomy performed” without specifying approach, technique, or indication gives the insurer grounds to request a more detailed report before settling. Consequently, that request adds weeks to payment timelines and, in some cases, triggers a full clinical audit.

Pre-authorisation and insurer requirements

UK private medical insurers treat gastrojejunostomy as an inpatient elective surgical procedure requiring pre-authorisation in most policy categories. The specific process varies by insurer, but the underlying requirements are broadly consistent. Practices using Bupa CCSD codes and fees should confirm the current authorisation pathway on Bupa’s provider portal before booking elective cases. Bupa updates those requirements periodically.

The typical pre-authorisation process for G3210 across major UK PMI providers involves:

• Bupa: requires pre-authorisation for all elective inpatient procedures. The referring consultant submits the procedure code and supporting clinical evidence. Bupa treats palliative cases with malignant obstruction as urgent, and they may follow an expedited pathway. The Bupa code search portal is the definitive reference for current fee levels and authorisation requirements.
• AXA Health: pre-authorisation required for planned surgery. AXA expects you to send the procedure code, the confirmed diagnosis, and the name of the operating surgeon at the point of authorisation.
• Vitality Health: pre-authorisation required. Vitality’s fee finder allows providers to look up the applicable fee for G3210 by code before submission.
• WPA: pre-authorisation is standard for inpatient surgical procedures. WPA may request a copy of the specialist’s letter stating the indication before issuing an authorisation number.

However, insurer rules change, and the guidance above reflects general practice for elective surgical pre-authorisation. Always check the insurer’s current provider portal before you send the claim, and record the authorisation number before admitting the patient.

Common reasons CCSD Code G3210 claims are denied

Most G3210 denials fall into one of five categories. Identifying which type applies to a rejected claim determines the fastest route to resolution.

Billing G3210 for laparoscopic gastrojejunostomy

The CCSD schedule uses a single code (G3210) for gastrojejunostomy regardless of surgical approach. CCSD has no separate laparoscopic code, and it does not use CPT-style modifiers. Bill both open and laparoscopic gastrojejunostomy under G3210, but state the approach explicitly in the operative note.

For example, some insurers negotiate different fee levels for laparoscopic versus open methods under the same code. A practice with a direct contract with Bupa, AXA or another PMI should confirm the rate for the approach used before admission. A laparoscopic note billed against an open-rate schedule (or the reverse) tends to cause under-reimbursement rather than outright denial. As a result, that shortfall is often harder to spot.

Coding palliative gastrojejunostomy for inoperable malignancy

Palliative gastrojejunostomy, performed to bypass an inoperable tumour causing gastric outlet obstruction, uses the same CCSD Code G3210 as an elective primary anastomosis. The clinical intent (palliative vs curative) does not change the CCSD code. What changes is the diagnosis coding and the clinical evidence package submitted for pre-authorisation.

For palliative cases, coders should:

• Use the most specific ICD-10 code for the primary malignancy (e.g. C25.0 head of pancreas, C16.3 pyloric antrum) rather than a generic obstruction code.
• Add K31.5 (obstruction of duodenum) as a secondary ICD-10 code only where duodenal obstruction is documented. The malignancy code stays the primary diagnosis.
• Include imaging reports (CT or endoscopy) and the oncologist’s or surgeon’s clinical letter showing inoperability as part of the pre-auth submission. Most UK PMI providers require clinical evidence of inoperability before authorising a palliative bypass under a standard surgical benefit.

How to manage CCSD Code G3210 billing in practice

Private surgical practices handling upper GI cases benefit from one consistent workflow for G3210 claims, from the pre-auth request through to payment reconciliation. Private insurance claim management software that submits through Healthcode also cuts the retyping between the patient record and the claim.

A reliable G3210 billing workflow includes:

1. Pre-admission: confirm the patient’s PMI policy, obtain the authorisation number for G3210, and record the auth reference against the patient’s file before the procedure date.
2. Day of surgery: the operating surgeon completes a detailed operative note covering approach, anastomotic technique, indication, and concurrent procedures before leaving the theatre complex.
3. Coding review: the billing team checks the operative note against G3210’s scope and confirms the ICD-10 diagnosis code. It also makes sure nobody bills a bundled part on its own.
4. Claim submission: the team sends the claim electronically to the insurer with G3210, the supporting ICD-10 code(s), the authorisation number, and the operative note attached.
5. Payment reconciliation: when the insurer’s remittance arrives, check that the paid amount matches the agreed fee for the approach used. Query any shortfall.

Finally, practices with several operating surgeons get the most from writing these steps down once, so every surgeon’s G3210 claims pass the same checks.

How Pabau keeps G3210 claims moving through Healthcode

Many surgical practices still rekey each G3210 claim into an insurer portal and chase authorisation numbers by email. That is where a missing auth reference or a mistyped policy detail slips through, and the claim comes back weeks later.

Pabau, the practice management and billing platform we build, sends private medical insurance claims through Healthcode to Bupa, AXA Health, Vitality and other insurers. Pabau stores each insurer authorisation as a case against the appointment and flags a claim still missing one before it goes out.

However, your team still chooses the CCSD code and checks it against the operative note. Pabau then tracks each claim from pending to paid and matches the insurer’s remittance to the invoice, so a short payment on G3210 surfaces quickly.

Send G3210 claims through Healthcode with Pabau

Pabau submits private medical insurance claims through Healthcode and flags any claim still missing an authorisation. Your team chooses the CCSD code, and Pabau tracks the claim through to payment.

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Conclusion

G3210 rewards a surgeon who writes the operative note with the coder in mind. If the note states the approach, the configuration and whether a prior anastomosis existed, the code choice settles itself before anyone builds the claim.

Take-down cases are where the temptation to bill both codes sits. CCSD treats G3210 and G3220 as an unacceptable combination. So pick one, agree it with the insurer and secure the authorisation before listing the patient.

Book a demo to see how Pabau sends your G3210 claims through Healthcode and flags a missing authorisation before submission.

Continue your research

Coding a revision instead? CCSD Code G3220: Revision of gastrojejunostomy explains when an existing anastomosis takes the revision code.

No specific stomach code fits? CCSD Code G3800: Open stomach surgery covers the catch-all code and why insurers scrutinise it.

Closing a gastrostomy in the same section? CCSD Code G3440: Closure of gastrostomy is the reference for that stomach-section procedure.

Need Bupa-specific fees and coding rules? Bupa CCSD codes and fee schedule guide covers Bupa’s procedure code framework and its provider portal.

Submitting claims through Healthcode? Pabau’s claims management software sends private medical insurance claims and tracks them to payment.

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