CCSD code F5120 – Submandibular duct calculus open extraction

Key takeaways

CCSD code F5120 covers open surgical extraction of a calculus from the submandibular (Wharton’s) duct, performed by a specialist oral and maxillofacial surgeon.

The primary ICD-10 diagnosis to pair with it is K11.5 (sialolithiasis), with K11.2 (sialoadenitis) added only when infection is documented.

Bupa places F5120 in fee category INTER 1, while parotid duct stones (F5110) and submandibular gland excision (F4440) take their own codes.

Most UK private insurers, including Bupa and AXA Health, require pre-authorization before F5120 is performed, and a missing authorization is a common cause of denial.

Practice management software like Pabau keeps the CCSD code, pre-authorization reference, and operative note on one patient record for claim submission.

CCSD code F5120: Definition and scope

CCSD code F5120 is the procedure code for open extraction of calculus from the submandibular duct. It is maintained by the Clinical Coding and Schedule Development (CCSD) group, which sets the procedure codes used across UK private healthcare. Bupa, AXA Health, Aviva and Vitality all bill against CCSD codes, so the schedule covers far more than dental or oral surgery.

The descriptor is specific. The procedure targets the submandibular duct (Wharton’s duct), not the gland itself, and the approach is open surgery. Endoscopic stone removal and gland excision each take a different code, so billing F5120 for either will trigger a denial.

Within the schedule, F5120 sits in chapter 6 (face, mouth, salivary and thyroid) under the salivary glands section. Bupa places it in fee category INTER 1, with a fee of £245. The full index of CCSD codes lists every neighboring procedure, and the comparison further down covers the salivary codes most often confused with F5120.

The procedure: How open sialolithotomy is performed

Open extraction of a submandibular duct calculus is an intraoral surgical procedure. The approach, anesthesia type, and exact technique depend on the stone’s size and position along Wharton’s duct.

1. Patient assessment and anesthesia selection. The surgeon confirms stone location with ultrasound, CT, or sialography. Stones in the anterior portion of Wharton’s duct are typically removed under local anesthesia (LA). Posterior or deeply placed stones, or procedures in pediatric or anxious patients, may require general anesthesia (GA). Whether GA is separately billable depends on the insurer, so verify it with each payer before billing.
2. Duct identification and incision. The patient’s tongue is retracted and the submandibular duct identified along the floor of the mouth. An intraoral incision is made over the palpable stone or directly over Wharton’s duct at the appropriate point.
3. Stone removal. The calculus (sialolith) is isolated and extracted. Care is taken not to damage the lingual nerve, which runs in close proximity. Multiple stones, if present, are removed in the same episode.
4. Duct management. Depending on the extent of the incision, the duct is either sutured closed or marsupialized. Marsupialization leaves the duct open to create a wider drainage opening, particularly where recurrent obstruction is a concern.
5. Post-operative documentation. The operative note must specify the approach (intraoral open), confirm stone removal, document the stone size and number, and record the duct management technique. This note is required for claim substantiation.

Open extraction is the definitive treatment when conservative measures (hydration, massage, sialogogues) have failed and the stone cannot be addressed endoscopically. It offers direct visualization and a high stone clearance rate, which makes it a standard approach for palpable anterior submandibular duct stones.

Clinical indications: When is F5120 the right code?

F5120 is the right code when the referral and operative note document the criteria below. Billing staff should confirm each one is clearly stated before submission.

• Confirmed submandibular duct calculus on imaging. Ultrasound, CT, or sialography must demonstrate a stone within Wharton’s duct. A clinical suspicion alone is not sufficient documentation.
• Stone size or location precluding endoscopic retrieval. Sialendoscopy can typically address stones up to approximately 4-5 mm. Larger stones, or those at acute duct angulations, sit outside endoscopic techniques and need open extraction.
• Failed conservative management. The clinical record should reflect at least one episode of conservative treatment before open surgery. That means hydration, massage, and antibiotics if sialoadenitis is present.
• Recurrent obstructive episodes. Patients with repeated submandibular swelling, pain on eating, or episodes of sialoadenitis attributable to the calculus are appropriate candidates.
• Absence of gland atrophy. Where chronic obstruction has left the submandibular gland significantly atrophied, removing the gland may be more appropriate than duct extraction alone.

Open extraction is usually performed by an oral and maxillofacial surgeon. Oral and maxillofacial surgery (OMFS) is a specialty on the General Medical Council (GMC) Specialist Register, not a scope defined by the General Dental Council. Insurers expect a recognized specialist surgeon to bill F5120, so general dental practitioners don’t use it.

Adjacent CCSD salivary gland codes and how to choose between them

The salivary glands section of the CCSD schedule holds several closely related codes. Picking the wrong one is the most common error on these claims. Two questions settle it. What was done, and on which gland? The grid below answers both, with Bupa’s fee category for each code.

Decision rule: F5120 applies only when the approach is open, the target is the submandibular duct, and the procedure is stone extraction. If an endoscope was also used in the same procedure, the claim moves to F5121. If the whole gland is removed, it belongs under F4440 instead.

Diagnosis codes to pair with F5120

Every F5120 claim needs a paired ICD-10 diagnosis code. The primary code is K11.5 (sialolithiasis), which covers a calculus or stone in any salivary gland or duct, including Wharton’s duct. UK private insurers work from the WHO ICD-10, so use the four-character codes below rather than US ICD-10-CM subdivisions.

The diagnosis must justify the procedure descriptor, which is open stone extraction from the submandibular duct. A diagnosis that points to an abscess or a gland needing removal supports a different procedure code, not F5120. Secondary codes are valid only when the matching condition is documented in the clinical record.

Documentation requirements for an F5120 claim

Missing documentation is one of the most common reasons F5120 claims get queried or refused. Treat this checklist as a pre-submission gate. If any item is absent, hold the claim and retrieve the record before submitting.

• Referral letter. A letter from the referring clinician (GP, GDP, or specialist) confirming the diagnosis of submandibular duct calculus and the basis for surgical management.
• Imaging report. Ultrasound, CT, or sialography report identifying the stone location within Wharton’s duct, including stone size where measurable. Most insurers require imaging to justify open surgery over conservative management.
• Operative note. The note must state the open intraoral approach, confirm calculus removal, and record stone dimensions and number. It should also note the anesthesia type and the duct management technique (primary closure or marsupialization). A generic note that doesn’t name the duct or the approach is insufficient.
• Anesthesia record. Required when GA is used. When LA is used, the operative note should state this explicitly.
• Post-operative follow-up note. Some insurers require evidence that the procedure was completed successfully, particularly where complications occurred or where marsupialization was performed.
• Pre-authorization reference. Where pre-authorization was obtained, include the authorization number on the claim form. Claims submitted without it may be rejected on administrative grounds, even when approval was granted.

Keep the referral letter, imaging report, and operative note against the same patient record. That way none of them goes missing between the surgical and billing teams. UK practices also have to hold these records in line with UK GDPR and the Data Protection Act 2018.

Pre-authorization requirements from UK private insurers

Major UK private insurers treat F5120 as a planned surgical procedure, so pre-authorization is required before surgery. The exact evidence varies by payer, but the clinical submission package is broadly consistent.

Insurer policies change regularly. Verify current pre-authorization requirements with each payer before submitting an F5120 claim. Record the date and outcome of each call or portal submission against the patient episode.

Common F5120 denial reasons and how to prevent them

F5120 claims are refused for a small number of recurring reasons, and most are preventable with a consistent pre-submission check. Each claim file carries special category health data under UK GDPR, so keep the checklist and its attachments in a secure system rather than email.

Bundling rules for F5120

Several ancillary services are commonly performed alongside open submandibular duct calculus extraction. Whether they can be billed separately depends on the insurer and how the clinical episode is structured.

• General anesthesia. Some insurers bundle GA with the procedure code, while others allow it as a separate line under the anesthetist’s own code. Confirm with each payer individually.
• Imaging (ultrasound / CT / sialography). Pre-operative imaging is typically billed as a separate episode before the procedure date and should not appear on the same claim as F5120. If imaging is performed on the day of surgery as a planning tool, check insurer policy.
• Duct dilation or lavage. Dilation performed as a step before open extraction in the same episode is part of F5120. Don’t bill a separate dilation code for it.
• Endoscopy in the same procedure. If a sialendoscope is used alongside the open incision, don’t bill F5120 plus F4831. The combined procedure has its own code, F5121.
• Contralateral duct procedure. If stones in both submandibular ducts are removed on the same operating list, each side may be billable as a separate F5120. That is subject to insurer rules on bilateral procedures, so document the bilateral findings explicitly.
• Abscess drainage (F4600). Drainage that happens as part of the same open extraction is not billed separately under F4600. A separately indicated abscess drainage in a distinct, earlier episode may be coded on its own.

Step-by-step guide to submitting an F5120 claim in the UK

F5120 claim submission follows a consistent eight-step workflow across most UK private insurers. A missed step usually causes a query or delay rather than outright rejection. The same steps apply to a first submission and to a resubmission.

1. Confirm insurer recognition. Verify that the treating surgeon holds current recognition with the patient’s insurer. An unrecognized consultant’s claims will be declined regardless of documentation quality.
2. Obtain referral and imaging. Confirm the written referral is in the file. Attach the imaging report (ultrasound, CT, or sialography) confirming the submandibular duct stone.
3. Request pre-authorization. Submit the request to the relevant insurer portal before booking the procedure. Record the authorization reference, the approving clinician’s name (where provided), and the date.
4. Complete the procedure and write the operative note. The note should be structured, specific, and completed on the day of surgery.
5. Raise the claim form. Enter F5120 as the procedure code and K11.5 as the primary diagnosis. Add the pre-auth reference, procedure date, anesthesia type, and the surgeon’s recognition number.
6. Attach supporting documents. The imaging report, referral letter, and operative note must accompany the claim. Some insurers accept electronic attachments through the portal, while others require postal or scanned submissions.
7. Submit via the insurer portal or billing address. Retain proof of submission, such as the portal confirmation email or a recorded delivery receipt.
8. Monitor for query or rejection. Set a follow-up reminder at 30 days. If a query arrives, respond within the insurer’s stated window and attach the requested documentation.

How Pabau helps practices manage CCSD billing for F5120

Today, an F5120 claim often lives in four places. The pre-auth reference sits in an email and the operative note in the surgical system. The imaging report is in a scanned folder, and the claim form is in the insurer portal. The billing coordinator spends the week chasing those pieces back together.

Pabau’s claims management software keeps them on one patient record instead. The CCSD code, the K11.5 diagnosis, and the authorization number sit on the treatment. The claim is then built from data the team already entered.

• Pre-authorization tracking. Record pre-auth reference numbers, approval dates, and insurer contacts against each patient episode, so the reference is ready at claim submission.
• Structured operative notes. Digital forms prompt the surgeon for the approach, duct site, stone details, and anesthesia type, so the note meets insurer requirements first time.
• Claim status and follow-up. Track each claim’s status and set follow-up reminders, so no F5120 claim drifts past the insurer’s response window.

The outcome is fewer denials for missing paperwork, and a clean audit trail when an insurer queries a claim.

Manage CCSD billing without the admin overhead

Pabau helps UK private practices record CCSD codes, track pre-authorization status, and submit insurer claims from a single system. See how it works for oral surgery practices.

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Conclusion

F5120 is one of the cheaper codes in the salivary section, and it is easy to lose. A combined endoscopic procedure, a parotid stone, or a gland excision each moves the claim to a different code and a different fee.

So settle the code before surgery, not after the denial. Match the planned approach and site to the grid, get pre-authorization for that exact code, and make the operative note confirm it. A claim built that way rarely comes back.

Book a demo to see how Pabau keeps pre-authorization, operative notes, and CCSD claims together for your oral surgery practice.

Continue your research

Need to understand Bupa’s CCSD code schedule? Bupa CCSD procedure codes covers how Bupa applies the CCSD schedule, accepted code ranges, and fee structure for private claims.

Billing a gland removal rather than a stone? CCSD code F4450 explains the sublingual gland excision code and how it differs from duct procedures.

Want a closer look at Bupa’s current fee schedule? Bupa procedure code fee schedule breaks down how Bupa prices CCSD-coded procedures and what practices need to verify before billing.

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