K03.5 Ankylosis of teeth

Billable ICD-10-CM code, FY2026.

Applies from K03 Other diseases of hard tissues of teeth

Excludes2 (not included here)

• bruxism (F45.8)
• dental caries (K02.-)
• teeth-grinding NOS (F45.8)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 521.6 Ankylosis of teeth

Diagnosis Index entries for K03.5

• Ankylosis (fibrous) (osseous) (joint) › dental
• Ankylosis (fibrous) (osseous) (joint) › tooth, teeth (hard tissues)

Nearby codes

• K03.0 Excessive attrition of teeth
• K03.1 Abrasion of teeth
• K03.2 Erosion of teeth
• K03.3 Pathological resorption of teeth
• K03.4 Hypercementosis
• K03.5 Ankylosis of teeth (this code)
• K03.6 Deposits [accretions] on teeth
• K03.7 Posteruptive color changes of dental hard tissues
• K03.8 Other specified diseases of hard tissues of teeth
• K03.81 Cracked tooth
• K03.89 Other specified diseases of hard tissues of teeth