CCSD code K3210 – Closed mitral valvotomy

Key takeaways

CCSD code K3210 bills closed mitral valvotomy, done on the beating heart without cardiopulmonary bypass. An open valvotomy bills under a different code, K3100 (Open valvotomy).

The operative note must confirm the closed technique, surgical approach, dilator used and absence of bypass. Without them, expect a query or denial.

Bupa, AXA Health and VitalityHealth all require prior authorisation for elective cardiac surgery, including K3210. Check each insurer’s provider portal before you submit.

Pabau, the practice management platform we build, helps UK private practices attach operative documentation, track authorisation status and submit CCSD claims in one workflow.

CCSD Code K3210: Definition and official descriptor

CCSD Code K3210 is the procedure code for closed mitral valvotomy in the CCSD schedule. UK private insurers use this schedule to bill and reimburse specialist procedures. The official descriptor is: Closed mitral valvotomy.

The code sits in Chapter 8 of the CCSD schedule (Thorax and intra-thoracic organs), among the heart valve codes in the cardiac surgery section. Its defining word is “closed”: the surgeon works on the beating heart without instituting cardiopulmonary bypass.

That word separates K3210 from K3100, the open valvotomy code listed directly before it. It also drives most documentation and coding decisions.

Key attributes of CCSD Code K3210 at a glance:

• Code: K3210
• Descriptor: Closed mitral valvotomy
• Chapter: 8, Thorax and intra-thoracic organs (heart, cardiac surgery)
• Complexity: Complex (listed as CMO 3 in the Bupa schedule)
• Bypass required: No (off-pump, closed technique)
• Common clinical synonym: Closed mitral commissurotomy
• Adjacent code: K3100 (official descriptor “Open valvotomy”, which names no specific valve)

What is a closed mitral valvotomy? The procedure explained

A closed mitral valvotomy is a cardiac operation that mechanically separates fused mitral valve leaflets to relieve mitral stenosis. The heart keeps beating, and the patient is never connected to a cardiopulmonary bypass circuit.

The technique was developed before open-heart surgery became routine and remains in use in centres where balloon mitral valvuloplasty is not suitable or available.

The classical operative sequence proceeds as follows:

1. Access: A left anterolateral thoracotomy exposes the pericardium and heart.
2. Transapical approach: The cardiothoracic surgeon introduces a dilator through the left ventricular apex (the transapical route) or, less commonly, through the left atrium.
3. Commissurotomy: A Tubbs dilator, the classical instrument for this approach, is passed across the mitral valve orifice under finger guidance. It is then expanded to split the fused commissures.
4. Assessment: Tactile feedback and, where available, transoesophageal echocardiography confirm the result and rule out induced mitral regurgitation.
5. Closure: Standard chest closure follows without bypass decannulation, because bypass was never initiated.

The absence of cardiopulmonary bypass throughout all five steps is what makes the procedure “closed” for CCSD coding. If the surgeon converts to an open operation on bypass, K3210 no longer describes what was done. Code the procedure that was completed instead; an open valvotomy bills under K3100.

Clinical indications and patient selection for K3210

CCSD Code K3210 applies when a patient has symptomatic rheumatic mitral stenosis and valve anatomy that suits the closed technique. Pre-operative echocardiography is essential both clinically and for documentation purposes.

Patient selection criteria that support K3210 coding:

• Rheumatic mitral stenosis with pliable, non-calcified valve leaflets confirmed on echocardiogram
• Mitral valve area below the threshold for intervention, typically under 1.5 cm² per ESC guidance on valvular heart disease (thresholds vary by institutional protocol)
• Absence of significant mitral regurgitation (more than mild regurgitation contraindicates the closed technique)
• No left atrial thrombus on transoesophageal echocardiogram
• Unsuitable for or unavailable access to percutaneous balloon mitral valvuloplasty

The operative note must reference the pre-operative echo findings to establish that the correct patient was selected for the closed technique. Claims submitted without this reference lose a key supporting document.

K3210 vs K3100: Closed mitral valvotomy or open valvotomy

Choosing between CCSD K3210 and K3100 turns on one question: was the valve opened on the beating heart, or under direct vision on bypass? Coders must confirm the answer from the operative note before assigning either code.

The two codes also differ in scope. K3210 names the mitral valve, while the official descriptor for K3100 is simply “Open valvotomy” and names no valve. The same split runs through OPCS-4, where category K31 covers open valvotomy and K32 covers closed valvotomy. The diagram below routes a valve operation to its code from two answers in the operative note.

Coders should check the CCSD schedule edition their practice uses, as the CCSD group updates descriptors periodically. Fees vary by insurer and contract, so treat the Bupa figures above as a reference point rather than a guaranteed payment. Our guide to the Bupa fee schedule lists Bupa’s procedure codes alongside their fees.

Adjacent and related CCSD codes for heart valve procedures

K3210 sits among several related heart valve codes in Chapter 8. Knowing them prevents unbundling errors and helps coders pick the most precise descriptor when the operative note describes a different intervention. For codes outside the heart valve group, search our CCSD code library.

Check bundling and co-billing rules against the current CCSD schedule edition. Insurer portals for AXA Health and Bupa publish chapter-specific fee schedules that clarify which codes are mutually exclusive within a session. The anaesthesia code is billed by the anaesthetist on a separate claim, not bundled within K3210.

Documentation requirements for a valid K3210 claim

An operative note that supports CCSD Code K3210 must explicitly confirm the closed technique. Insurers review documentation during audits and query rounds. A vague note that omits key elements is treated the same as a missing note. Good medical billing fundamentals begin with a complete surgical record.

Mandatory elements for a K3210-supporting operative note:

• Confirmation of closed technique: The note must state that cardiopulmonary bypass was not instituted. Phrases such as “closed technique, no bypass” or “off-pump approach” are unambiguous.
• Surgical approach: State whether access was transapical (left ventricular apex) or trans-atrial, and confirm the incision site.
• Instrument used: Name the dilator deployed (Tubbs dilator or equivalent) and note the dilatation diameter achieved, where available.
• Pre-operative echo reference: Reference the echocardiogram that confirmed patient suitability, including valve mobility and absence of thrombus findings.
• Operative findings: Document valve appearance (pliable, non-calcified commissures), degree of commissural fusion, and post-dilatation mitral valve area if assessed intraoperatively.
• Absence of conversion: Confirm the procedure remained closed throughout, particularly if any intraoperative difficulty was encountered.

A structured operative note template helps cardiothoracic teams capture each of these required elements consistently. Free-text dictation often leaves out the bypass-status statement, and without it the coder has no basis for choosing between K3210 and K3100.

Prior authorisation requirements for K3210 by UK private insurer

All three major UK private health insurers reviewed here require prior authorisation for elective cardiac surgery coded under CCSD, including K3210.

Policies change periodically, so practices should always verify current requirements on each insurer’s provider portal before submitting an authorisation request. The Bupa CCSD billing guide on Pabau covers Bupa-specific code submission in more detail.

The cardiologist’s referral letter and the pre-operative echocardiogram report are the two documents that must accompany every prior authorisation request for K3210. Submitting the claim before authorisation is confirmed results in automatic denial across all three insurers listed here.

Why K3210 claims get denied and how to prevent it

Most K3210 rejections fall into one of four categories, each with a straightforward corrective action. Sound medical billing compliance practices address all four before the claim is submitted.

If a claim is denied for a documentation reason, request the full denial rationale from the insurer before resubmitting. A generic appeal that does not fix the specific deficiency is likely to be rejected for the same reason.

ICD-10 diagnosis codes to pair with K3210

The CCSD procedure code K3210 must be submitted alongside an appropriate ICD-10 diagnosis code that confirms the clinical indication. UK private insurers use the NHS ICD-10 5th edition (England) classification.

Coders should verify code currency against the version in use at their practice, as terminology and code validity are updated periodically.

Submitting K3210 with a non-stenosis diagnosis, such as a mitral regurgitation-only code, triggers rejection. The procedure relieves stenosis; it does not correct regurgitation. Always cross-reference the diagnosis code against the echo findings documented in the referral.

How Pabau keeps K3210 claims complete from authorisation to payment

A K3210 claim usually draws on four separate records: the echo report, the authorisation reference, the operative note and the invoice. Each hand-off between them is a chance to lose a document or key the wrong code.

Pabau keeps those records on one patient episode. The workflow below shows how a cardiothoracic practice manager would take a K3210 claim from authorisation to payment with Pabau’s private medical billing tools.

1. Create the patient episode and enter K3210: Open the patient record, create the surgical episode, and enter CCSD Code K3210 as the procedure code. Confirm the ICD-10 diagnosis code (typically I05.0) is linked to the episode before proceeding.
2. Attach supporting documents: Upload the pre-operative echocardiogram report and the cardiologist referral letter to the episode record. These documents accompany both the prior authorisation request and the final claim.
3. Submit the prior authorisation request: Route the authorisation request to the relevant insurer portal (Bupa, AXA Health, or VitalityHealth). Record the authorisation reference number in the episode once approval is received.
4. Generate and submit the claim: Once the procedure is completed and the operative note is signed off, generate the CCSD claim. Confirm the operative note is attached, the procedure code is K3210, the diagnosis code is correct, and the prior auth reference is included.
5. Track claim status and manage denials: Monitor the claim through the insurer adjudication cycle. If the insurer denies the claim, check the denial reason against the documentation checklist in this guide. Correct the deficiency and resubmit with a covering note.

With the operative note, echo report, authorisation record and claim in one system, a claim is far less likely to leave without a required document.

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Conclusion

Most K3210 problems start before the claim is built, in an operative note that never says whether bypass was used. Fix that one sentence at source and the choice between K3210 and K3100 stops being a judgement call for the coder.

The rest is discipline: no submission without an authorisation reference, and a diagnosis code that matches the stenosis on the echo. Practices that hold every claim to those checks spend far less time on queries and appeals.

Practices handling cardiothoracic CCSD billing can reduce manual errors by managing operative documentation, authorisation tracking, and claim submission in a single workflow. To see how Pabau supports private billing for UK surgical practices, book a demo.

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