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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Diseases Of Oral Cavity, Salivary Glands, And Jaws 520-529 > Disorders Of Tooth Development And Eruption 520.* > 2008 ICD-9-CM Diagnosis 520.6 Disturbances in tooth eruption A tooth that is prevented from erupting by a physical barrier, usually other teeth. Impaction may also result from orientation of the tooth in an other than vertical position in the periodontal structures. Predeciduous teeth present at birth. They may be well formed and normal or may represent hornified epithelial structures without roots. They are found on the gingivae over the crest of the ridge and arise from accessory buds of the dental lamina ahead of the deciduous buds or from buds of the accessory dental lamina. (From Jablonski, Dictionary of Dentistry, 1992) 520.6 is a specific code that can be used to specify a diagnosis 520.6 contains 42 index entries View the ICD-9-CM Volume 1 520.* hierarchy 520.6 also known as: Teeth: embedded impacted natal neonatal prenatal primary [deciduous]: persistent shedding, premature Tooth eruption: late obstructed premature 520.6 excludes: exfoliation of teeth (attributable to disease of surrounding tissues) (525.0-525.19) Index entries containing 520.6: Anomaly, anomalous (congenital) (unspecified type) 759.9 dentition 520.6 Deciduous tooth (retained) 520.6 Dentia praecox 520.6 Dentition 520.7 abnormal 520.6 anomaly 520.6 delayed 520.6 disorder of 520.6 precocious 520.6 retarded 520.6 Disorder - see also Disease dentition 520.6 tooth NEC 525.9 eruption 520.6 Disturbance - see also Disease tooth eruption 520.6 Embedded tooth, teeth 520.6 root only 525.3 Eruption teeth, tooth accelerated 520.6 delayed 520.6 difficult 520.6 disturbance of 520.6 in abnormal sequence 520.6 incomplete 520.6 late 520.6 natal 520.6 neonatal 520.6 obstructed 520.6 partial 520.6 persistent primary 520.6 premature 520.6 prenatal 520.6 Impaction, impacted cuspid 520.6 dental 520.6 molar 520.6 tooth, teeth 520.6 Malocclusion (teeth) 524.4 due to impacted teeth (causing crowding) 520.6 Malposition tooth, teeth 524.30 with impaction 520.6 Natal tooth, teeth 520.6 Neonatal - see also condition teeth, tooth 520.6 Obstruction, obstructed, obstructive tooth eruption 520.6 Persistence, persistent (congenital) 759.89 primary (deciduous) teeth 520.6 Prenatal teeth 520.6 Retention, retained deciduous tooth 520.6 Shedding teeth, premature, primary (deciduous) 520.6 Teeth, tooth - see also condition prenatal 520.6 Unerupted teeth, tooth 520.6