The National Institute for Health and Clinical Excellence (NICE) has issued full guidance to the NHS in England, Wales, Scotland and Northern Ireland on mini/micro screw implantation for orthodontic anchorage.

  • Description

    This procedure is most commonly undertaken by orthodontists . Orthodontic mini- and microscrew systems have been developed from maxillofacial fixation techniques; they use mechanical retention for anchorage. They are small  self-tapping titanium screws.

     Under local anaesthesia a pilot hole is drilled into the maxilla or mandible and the screw is inserted through the bone cortex and into the alveolar bone using a screwdriver-like tool. More than one screw can be inserted if necessary.

    Orthodontic loading can be achieved immediately after insertion, although it is often undertaken at a second visit. Following completion of the orthodontic treatment the screw(s) can be extracted and the incision site can be expected to heal spontaneously.

  • OPCS4.6 Code(s)

    For insertion:

    F14.6 Insertion of orthodontic anchorage

                Includes: Insertion of orthodontic screw

                               Insertion of orthodontic mini screw

                               Insertion of orthodontic micro screw

    For removal:      

    F14.7 Removal of orthodontic anchorage

                Includes: Removal of orthodontic screw

                               Removal of orthodontic mini screw

                               Removal of orthodontic micro screw


    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.


  • Get involved