Pelvis or abdomen, ultrasound (the current ultrasound) scan of, for cervical length assessment for risk of preterm labour, by any or all approaches, if: (a) the dating of the pregnancy (as confirmed by the current ultrasound) is between 14 and 30 weeks of gestation; and (b) any of the following apply: (i) the patient has a history indicating high risk of preterm labour or birth or second trimester fetal loss; (ii) the patient has symptoms suggestive of threatened preterm labour or second trimester fetal loss; (iii) the patient’s cervical length is less than 25 mm on an ultrasound before 28 weeks gestation; and (c) the current ultrasound is not performed on the same patient within 24 hours of a service mentioned in another item in this Subgroup (R)