K00.2 Abnormalities of size and form of teeth

Billable ICD-10-CM code, FY2026.

Applicable to

• Concrescence of teeth
• Fusion of teeth
• Gemination of teeth
• Dens evaginatus
• Dens in dente
• Dens invaginatus
• Enamel pearls
• Macrodontia
• Microdontia
• Peg-shaped [conical] teeth
• Supernumerary roots
• Taurodontism
• Tuberculum paramolare

Excludes1 (never code together)

• abnormalities of teeth due to congenital syphilis (A50.5)
• tuberculum Carabelli, which is regarded as a normal variation and should not be coded

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)

• 520.2 Abnormalities of size and form of teeth

Code annotations containing back-references to K00.2

Back-references to K00.2

• Type 2 Excludes: K00.1 Supernumerary teeth ("supernumerary roots (K00.2)")

Diagnosis Index entries for K00.2

• Abnormal, abnormality, abnormalities › form › teeth
• Abnormal, abnormality, abnormalities › size, tooth, teeth
• Abnormal, abnormality, abnormalities › tooth, teeth (form) (size)
• Accessory (congenital) › roots (teeth)
• Anomaly, anomalous (congenital) (unspecified type) › form, teeth
• Concrescence (teeth)
• Conical › teeth
• Deformity › tooth, teeth
• Dens evaginatus, in dente or invaginatus
• Dichotomy, teeth
• Elongated, elongation (congenital) › tooth, teeth
• Enamel pearls
• Enameloma
• Fusion, fused (congenital) › tooth, teeth
• Gemination, tooth, teeth
• Macrodontia
• Microdontia
• Molarization of premolars
• Pearl (s) › enamel
• Peg-shaped teeth
• Predeciduous teeth
• Premolarization, cuspids
• Schizodontia
• Shovel-shaped incisors
• Spicule tooth
• Supernumerary (congenital) › roots (of teeth)
• Synodontia
• Taurodontism
• T-shaped incisors
• Tuberculum › Carabelli
• Tuberculum › occlusal
• Tuberculum › paramolare
• Twinning, teeth

Nearby codes

• K00 Disorders of tooth development and eruption
• K00.0 Anodontia
• K00.1 Supernumerary teeth
• K00.2 Abnormalities of size and form of teeth (this code)
• K00.3 Mottled teeth
• 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