CCSD code A6110 – Excision of peripheral nerve lesion

Key Takeaways

CCSD code A6110 sits in the peripheral nerve surgical block; it covers excision of a lesion (e.g. neurilemoma/schwannoma), not neurolysis or nerve repair

Pair A6110 with ICD-10 D36.10-D36.13 (benign neoplasm of peripheral nerve) – the sub-code must match the anatomical site documented in the operative report

Prior authorisation is required by most major UK private health insurers; submitting without PA is the single most common reason A6110 claims are denied

Pabau’s claims management software helps private surgical practices track authorisation status, attach operative notes, and submit CCSD claims with the correct codes and modifiers

What CCSD code A6110 covers

CCSD code A6110 covers the surgical excision of a lesion arising on a peripheral nerve, with neurilemoma as the archetypal example. A neurilemoma (also called schwannoma) is a benign, encapsulated tumour of Schwann cell origin that forms on the nerve sheath rather than within the nerve fascicles.

Because it is encapsulated, the tumour can usually be shelled out without cutting through the nerve itself, making this a technically demanding but nerve-preserving procedure. The code belongs to the A-series surgical block within the Bupa CCSD procedure coding guide covering peripheral nerve surgery.

The official descriptor is concise: Excision of lesion of peripheral nerve (eg neurilemoma). The parenthetical qualifier is illustrative, not exhaustive. Other benign lesions excised from peripheral nerves, such as encapsulated neurofibromas or perineural cysts, may also attract A6110 when the operative approach and anatomical context match the descriptor.

Neurofibroma excision is covered separately when the coding authority differentiates by lesion type or complexity.

Surgical steps: what the peripheral nerve lesion excision involves

A peripheral nerve lesion excision under A6110 follows a consistent operative sequence, which is the anatomy the coder must recognise in the operative report to confirm the code is correct.

1. Exposure: The surgeon makes an incision over the nerve, dividing the overlying soft tissue to expose the affected nerve trunk.
2. Nerve identification: Proximal and distal nerve segments are identified and protected, often using loupes or intraoperative nerve monitoring.
3. Capsule dissection: The tumour capsule is opened or dissected free from the surrounding nerve fascicles. For a schwannoma, the encapsulated nature usually allows complete excision without nerve transection.
4. Tumour removal: The lesion is removed in full and sent for histopathology to confirm tumour type.
5. Wound closure: The nerve and overlying tissue are repaired and the wound is closed in layers.

When intraoperative nerve monitoring is used, it is typically performed by a separate neuromonitoring technician and may attract its own code. See the section on co-billing below for bundling considerations.

Clinical indications: when A6110 is appropriate

Medical necessity for peripheral nerve lesion excision under A6110 generally requires that the tumour is symptomatic or growing. Private health insurers assess clinical motivation against their own medical necessity criteria, which vary by scheme.

Accepted indications across most UK private insurers include the following. Surgical practices should record which criteria are present in the pre-operative assessment; surgical clinic practice management software that links pre-operative notes to the claim record makes this audit trail easier to maintain.

• Progressive or intractable nerve pain (neuropathic pain not controlled conservatively)
• Motor deficit or weakness attributable to nerve compression by the tumour
• Sensory loss in the distribution of the affected nerve
• Documented tumour growth on serial imaging (MRI or ultrasound)
• Cosmetically significant lesion causing functional impairment
• Uncertain diagnosis requiring excision biopsy to exclude malignancy

Asymptomatic incidental schwannomas without growth or functional deficit are rarely approved by private insurers without a compelling clinical argument. Document the specific indication in the clinical letter; payers reject vague justifications.

Diagnosis codes that pair with CCSD A6110

Every CCSD A6110 claim must carry a supporting ICD-10 diagnosis code. The correct sub-code depends on the anatomical site confirmed in the operative report and histopathology.

The ICD-10 codes above cover benign neoplasms of peripheral nerves as classified by the WHO ICD-10 browser. If histopathology returns a diagnosis other than neurilemoma or schwannoma, for example a neurofibroma associated with neurofibromatosis type 1, confirm whether an alternative ICD-10 code better reflects the confirmed pathology.

Documentation requirements for CCSD A6110

Inadequate operative documentation is the most common reason A6110 claims are queried or denied. Private insurers may request clinical records before paying, and every element below should be in the patient file before the claim is submitted. Using digital clinical documentation that timestamps and stores each document against the patient record simplifies retrieval when an insurer requests evidence.

• Operative report: Must confirm the nerve involved (by name and anatomical location), the nature of the lesion, the surgical approach, confirmation that the lesion was excised (not biopsied only), and nerve continuity status at closure.
• Pre-operative imaging: MRI or ultrasound report identifying the lesion, its dimensions, and its relationship to the nerve trunk.
• Clinical motivation letter: Specialist letter documenting symptoms, failed conservative management, and the clinical rationale for surgery.
• Histopathology report: Post-operative pathology confirming tumour type. Most insurers require this for final payment processing; some withhold payment until it is received.
• Prior authorisation reference number: The PA approval from the insurer, obtained before the procedure takes place.
• Post-operative follow-up note: Documenting nerve function status at first post-operative review.

Prior authorisation: what UK private insurers require before approving A6110

Prior authorisation is required by most major UK private health insurers for peripheral nerve tumour excision under A6110, though individual scheme rules vary. Submitting a claim without a valid PA reference is the single most common trigger for outright denial rather than a request for additional information. Use compliance tracking tools to flag procedures that require PA before the surgery date is confirmed.

Typical PA requirements across Bupa, AXA Health, Aviva, and Vitality include the following, though practices should verify current scheme rules directly, as policies change annually.

• GP or specialist referral letter confirming the diagnosis and recommending surgery
• Pre-operative imaging report (MRI or ultrasound) demonstrating the lesion
• Clinical motivation letter from the operating surgeon detailing symptoms and indication
• Consultant details (GMC number, recognised specialist status with the insurer)
• Proposed procedure code (A6110) and estimated facility costs

Submit the PA application early. Most schemes allow 5-10 working days to process; emergency PA pathways exist but attract additional scrutiny. Once approved, retain the authorisation reference number and include it on the claim form.

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Modifiers applicable to CCSD A6110

CCSD modifiers adjust how the base A6110 fee is calculated. Most UK private insurers follow the CCSD technical guide rules on modifier application, though individual schemes may restrict or augment specific modifiers.

Do not apply the bilateral modifier unless both sides are genuinely excised and documented. Incorrectly claiming bilateral status is a common audit flag and can result in retrospective repayment demands from insurers.

A6110 vs adjacent CCSD codes and CPT crosswalk

Selecting the correct code from the peripheral nerve surgical block requires understanding where A6110 ends and neighbouring codes begin. The table below distinguishes A6110 from adjacent CCSD codes and maps each to its approximate US CPT equivalent for practices billing across code systems. The CPT crosswalk is approximate; CPT descriptor definitions differ from CCSD and should be verified against the current AMA CPT code set.

The CPT crosswalk reflects the approximate alignment as of the current CPT edition. Because CPT and CCSD are independently maintained systems, descriptor boundaries can diverge; always confirm against the current edition of each code set. The AMA’s CPT code set overview is the definitive reference for US procedure code definitions.

Common claim denial reasons for CCSD A6110

A6110 claims attract a predictable set of denial triggers. Most are preventable with thorough pre-submission review. Practices using claims management software that runs a pre-submission checklist against each CCSD claim catch the majority of these before they reach the insurer.

Co-billing A6110 with nerve monitoring codes

Intraoperative nerve monitoring is commonly used during peripheral nerve excision to help the surgical team identify and preserve functioning nerve fascicles. Whether IONM attracts a separate, billable code alongside A6110 depends on the individual insurer’s bundling rules, and practices should verify this directly with each scheme before submitting a co-bill.

• Separately billable in some schemes: Where the IONM is performed by a distinct neuromonitoring provider (not the operating surgeon), some UK insurers allow it to be billed separately under the appropriate monitoring code.
• Bundled in others: Some insurers regard monitoring as included in the surgical fee and will not pay a separate monitoring code alongside A6110.
• Verify before submission: Contact the insurer’s provider helpline or check the current fee schedule to confirm whether co-billing is permitted before submitting both codes on the same claim.
• Document the provider: If billing IONM separately, the operative report must clearly name the monitoring technician or neurophysiologist as a separate professional from the operating surgeon.

Reimbursement guidance for A6110

Schedule fees for CCSD A6110 are set by individual insurers and published in their annual fee schedules. There is no single universal tariff. Reimbursement varies by insurer, year, and whether the fee is based on the CCSD schedule unit value or a negotiated rate.

To retrieve the current applicable fee for A6110, use the insurer’s own fee finder tool: the Vitality fee finder, the Healix fee schedule, and the Bupa code search all allow practitioners to look up current schedule fees by code. The CCSD technical guide documents how modifiers and multiple-procedure rules affect the payable amount. Maintaining up-to-date clinical record keeping within your practice management system ensures that fee schedule versions are recorded alongside claim submissions for audit purposes.

Key factors that affect the final reimbursable amount include: modifier applied (bilateral adds a multiplier; assistant surgeon attracts an additional fee), whether multiple procedures were performed in the same session (attracting a reduction on the lower-value procedure), and whether the patient holds full outpatient benefit or a restricted plan.

Conclusion

CCSD code A6110 is a specialist surgical code where accurate documentation, correct ICD-10 pairing, and valid prior authorisation together determine whether a claim pays or denies. The most preventable failure point is submitting without a PA reference; the most correctable is improving the specificity of the operative note and ICD-10 sub-code selection.

Pabau’s claims management software helps private surgical practices track authorisation status, attach clinical documents to each claim, and submit CCSD codes with the correct pairings.

To see how it works in a specialist or surgical practice, book a demo.

Continue your research

Need guidance on Bupa CCSD procedure codes? Bupa CCSD billing guide covers how to navigate the CCSD schedule for UK private practice claims.

Looking for a complete digital audit trail? Digital clinical forms let your team capture operative notes and consent records that are attached directly to the patient file.

Managing compliance across a surgical practice? Compliance management tools help track prior authorisation deadlines and regulatory requirements across your team.

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