CCSD code H1300 – Bypass of colon

Key takeaways

CCSD code H1300 is bypass of colon, a major large-intestine operation in Chapter 11, sub-chapter 11.5.0 of the schedule.

Use it when the surgeon reroutes bowel around a colon segment and leaves that segment in place.

CCSD flags several colon codes as unacceptable with H1300, including the main resections and H1200 lesion excision.

The operation note has to describe a bypass, not a resection, or the insurer is likely to query the code.

If the plan changes during surgery, update the pre-authorization to H1300 before you submit the invoice.

What CCSD code H1300 covers, and what it doesn’t

CCSD code H1300 is the schedule entry for bypass of colon. The surgeon joins healthy bowel above a problem segment to healthy bowel below it. Stool then travels around that segment, which stays in the abdomen.

Surgeons usually choose a bypass when removing the segment isn’t safe or possible. A typical case is an obstructing tumor fixed to nearby structures. The bypass relieves the blockage without a major resection.

That detail drives the coding. If the segment comes out, a resection code fits instead. If the surgeon brings the colon out as a stoma rather than rejoining it, look at the colostomy codes, such as H1590.

The CCSD (Clinical Coding and Schedule Development) Group maintains the code set. Aviva, AXA Health, Bupa and Vitality all use it, and many smaller UK insurers follow. The group sets codes and descriptors, not fees. For more entries, browse our CCSD codes library.

Where H1300 sits in Chapter 11

H1300 lives in Chapter 11, Abdomen (excluding urinary and reproductive organs). Within it, sub-chapter 11.5.0 covers the large intestine. Its neighbors describe other colon operations, so a quick comparison keeps you on the right line.

Complexity bands differ by insurer. Bupa’s February 2026 schedule places H1300 in its MAJOR 4 band, and Freedom Health Insurance lists it as Major. Our Bupa CCSD codes guide explains how those bands work, but always confirm the fee in your insurer’s own schedule.

The main codes that can’t share an H1300 claim

CCSD flags a set of colon codes as unacceptable combinations with H1300, including the main resections and lesion excisions. Most describe surgery that already removes or rejoins the same bowel.

Billing both would usually count one operation twice, and the chart below shows the main pairings we’ve verified.

The list is guidance rather than law. CCSD calls its coding principles non-exhaustive, and each insurer decides which combinations to enforce. Its list for H1300 may also be longer than the chart, so check the current H1300 page on the CCSD site before you submit. Still, expect a query if one of these codes shares a claim with H1300.

Sometimes a surgeon does perform two separate procedures in one session. In that case, document why each was needed. Then call the insurer before you submit, and note the call reference in the patient file.

The operation note decides the H1300 claim

For major colon surgery, the insurer leans on the operation note first. It should leave no doubt that a bypass took place. Here’s what a clean note contains.

• Indication: the diagnosis and the reason for operating.
• Findings: what the surgeon saw, including why the segment stayed in place.
• Procedure: which bowel was joined to which, and how the anastomosis was formed.
• Approach: open or laparoscopic, plus any conversion between the two.
• Team and timings: surgeon, assistant and anesthetist names, with start and finish times.

Keep the signed consent form, the pre-authorization reference and the discharge summary with the note. Together, they answer most insurer queries without a second letter from the surgeon.

How an H1300 claim moves through Healthcode

Healthcode is the UK clearinghouse that most private insurers accept for electronic bills. Here’s how a typical H1300 claim travels from booking to payment.

1. Before surgery, the patient obtains pre-authorization from their insurer. Record the authorization number against the booking.
2. After surgery, check that the procedure performed matches the one authorized. If it changed, tell the insurer and ask for an updated authorization.
3. Build the invoice with H1300, the date of surgery, the diagnosis and the patient’s membership number.
4. Add your details, including your insurer recognition number and the authorization reference.
5. Submit through Healthcode, which checks the bill before passing it to the insurer.
6. Track the status and answer any query quickly, with the operation note to hand.

The hospital and the anesthetist usually bill the insurer separately for the same episode. So the surgeon’s invoice covers the surgeon’s fee only.

Why H1300 claims stall, and how to fix them

Most H1300 queries trace back to a mismatch between the paperwork and the operation. The table pairs each common problem with its fix.

Before you submit H1300: A five-point check

Run this check on every H1300 invoice. It takes a couple of minutes and catches the problems in the table above.

• The operation note describes a bypass, and the segment stayed in place.
• No code from the unacceptable list sits on the same claim.
• The authorization covers the procedure the surgeon performed.
• The membership number, recognition number and date of surgery match the insurer’s records.
• The diagnosis on the invoice explains why the bowel needed a bypass.

Common H1300 coding mistakes to avoid

Most H1300 errors come from reading the word bypass too loosely. Three patterns are worth watching.

Coding a resection as a bypass

A right hemicolectomy rejoins the ileum to the transverse colon. In a hurried note, that join can look like a bypass. However, the segment was removed, so H0700 applies rather than H1300.

Using H1300 for a small-bowel bypass

H1300 covers the colon only. A jejunal bypass belongs under CCSD code G6100, and an ileal bypass under CCSD code G7100.

Calling a stoma a bypass

A defunctioning colostomy diverts stool, but it doesn’t rejoin bowel inside the abdomen. For that operation, check the colostomy codes, such as H1590 or the laparoscopic H1581.

A quick worked example

A surgeon plans a sigmoid colectomy, CCSD code H1000, for an obstructing tumor. During surgery, she finds the tumor fixed to the pelvic wall. Removal isn’t safe, so she joins bowel above the tumor to bowel below it.

The authorization still says H1000, yet the note describes a bypass. So the practice calls the insurer, updates the authorization to H1300 and bills H1300 alone.

How Pabau keeps H1300 claims clean

Colon surgery claims pass through several hands. The surgeon writes the note, a secretary chases authorization, and someone else builds the invoice. Each handoff is a chance for the code and the paperwork to drift apart.

Pabau keeps those steps in one patient record. The authorization reference sits with the booking, and the operation note and consent live in the same file. When the invoice is ready, Pabau’s claims management software submits it to Healthcode without retyping membership details.

Claim status then flows back into the record, so your team sees a query the day it lands. Payments reconcile against the invoice, which keeps the surgeon’s ledger accurate.

Send cleaner CCSD claims to Healthcode

Pabau keeps authorization references, operation notes and CCSD-coded invoices in one patient record, then submits claims through Healthcode. Fewer retyped details mean fewer queries on major surgery claims.

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Conclusion

H1300 is a narrow code with a clear test. If the bowel was rerouted and the diseased segment stayed, bypass of colon is the right line. If the surgeon removed any colon, a resection or excision code will almost always fit better.

Most H1300 trouble starts when the plan changes during surgery. So update the authorization early, keep the note specific, and leave unacceptable pairs off the claim. Book a demo to see how Pabau keeps CCSD claims and their paperwork together for surgical practices.

Continue your research

Billing rectal surgery too? CCSD code H3320 covers abdominoperineal resection of rectum and anus, with its own documentation checks.

Need the upper-gut equivalent? CCSD code G5100 explains how bypass of duodenum is coded and billed.

Coding an abscess drainage after colon surgery? CCSD code H0310 covers drainage of an appendix or intra-abdominal abscess.

Frequently asked questions