The National Institute for Health and Clinical Excellence (NICE) has issued full guidance to the NHS in England, Wales, Scotland and Northern Ireland on laser-assisted cerebral vascular anastomosis without temporary arterial occlusion.

  • Description

    Arteries in the head may need to be bypassed as part of an operation, usually because of 'ballooning' or blockage of arteries. Laser-assisted cerebral vascular anastomosis without temporary arterial occlusion aims to create a bypass without the need to temporarily interrupt the blood flow to the brain.

  • OPCS4.6 Code(s)

    One of the following OPCS-4 codes is selected as appropriate:

    L29.2 Intracranial bypass to carotid artery NEC

    L29.6 High flow interposition extracranial to intracranial bypass from external carotid artery to middle cerebral artery

    L29.7 Bypass of carotid artery by anastomosis of superficial temporal artery to middle cerebral artery

    L34.2 Anastomosis of cerebral artery


    Plus the following code:


    Y08.8 Other specified laser therapy to organ NOC

    Note: It is not possible to classify ‘without temporary arterial occlusion’ using OPCS-4.

    The NHS Classifications Service of NHS Connecting for Health is the central definitive source for clinical coding guidance and determines the coding standards associated with the classifications (OPCS-4 and ICD-10) to be used across the NHS.   The NHS Classifications Service and NICE work collaboratively to ensure the most appropriate classification codes are provided.


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