Bilateral single event multilevel surgery, for a patient less than 18 years of age with diplegic cerebral palsy, that comprises: (a) lengthening of a contracted muscle tendon unit or units by tendon lengthening, muscle recession, fractional lengthening or intramuscular lengthening; and (b) correction of muscle imbalance by transfer of a tendon or tendons; conjoint surgery, conjoint specialist surgeon, including fluoroscopy and excluding aftercare (H) (Anaes.) (Assist.)