K00.9 Disorder of tooth development, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Disorder of odontogenesis NOS

Applies from K00 Disorders of tooth development and eruption

Excludes2 (not included here)

• embedded and impacted teeth (K01.-)

MS-DRG index

Defines the logic of DRG(s) 011-013 in MDC PRE.

Approximate ICD-9-CM (GEMs)

• 520.9 Unspecified disorder of tooth development and eruption

Diagnosis Index entries for K00.9

• Anomaly, anomalous (congenital) (unspecified type) › tooth, teeth
• Disorder (of) › odontogenesis NOS
• Disorder (of) › tooth › development
• Malformation (congenital) › teeth, tooth

Nearby codes

• K00.4 Disturbances in tooth formation
• K00.5 Hereditary disturbances in tooth structure, not elsewhere classified
• K00.6 Disturbances in tooth eruption
• K00.7 Teething syndrome
• K00.8 Other disorders of tooth development
• K00.9 Disorder of tooth development, unspecified (this code)